Journal Genaral View

Document version 1.1. Last update: 01/02/2024.

This journal webpage was created to facilitate the research inside the journal of its main process and practices by reducing the search in the navigation bar. Several pages were condensed in this webpage, and the informative material was also improved and sometimes reorganized. If you feel that some critical information is missing from this page, please let us know so we can improve the content even further.

Etablished in 2003 and published since 2004, the Periódico Tchê Química (PQT) is am international triannual journal (one issue is published in MARCH, one in JULY, and one in NOVEMBER). The journal is open-access and it welcomes high-quality theoretically informed publications which can be examined empirically in the following fields: Chemistry, Biology, Physics, Mathematics, Pharmacy, Medicine, Engineering, Agriculture and Education in Science. As time went by the journal became multidisciplinary and its Scientific Council was expanded. The Periódico Tchê Química has adopted a double-blind reviewing policy whereby both the referees and author(s) remain anonymous throughout the process.


  • Title: Periódico Tchê Química.
  • Original alphabet of title: Extended roman.
  • Short Title: Per. Tchê Quim.
  • ISSN: 1806-0374 (Printed); 2179-0302 (Online).
  • Universal Decimal Classification (UDC): 001
  • DOI: 10.52571/PTQ
  • Review Process: Double-blind peer-review.
  • Fast Publication: NO.
  • Frequency of Publication: Quarterly [3 issues per year].
  • Accessibility: Gold OA, APC-based
  • Publisher: Dr. D. Scientific Consulting. A Brazilian Company.
  • Website:
  • Country: BRAZIL.
  • Language of publication: ENGLISH and PORTUGUESE. The sections Title, Abstract, and keywords may contain a third language.
  • First issue year: 2004.
  • Full text freely available: Yes.
  • Journal contact E-mail:

Main Video Instructions to authors

Presentation of the Journal:

Submission and Publication Procedures:

Open Access Publication and Creative Commons Licensing




No special permission is required to reuse all or part of an article published by the Periódico Tchê Química, including figures and tables. For articles published under an open-access Creative Common CC BY license, any part of the article may be reused without permission, provided that the original article is clearly cited. Reuse of an article does not imply endorsement by the authors or the Periódico Tchê Química.

Public agreement for publishing

1) The authors declare that the submitted manuscript is their work, which has not been published anywhere else before and that they are not willing to publish it anywhere later;
2) The authors take responsibility for the content of the publication.
3) It is the responsibility of the author to obtain written permission for reproducing illustrations or tables from other published material;
4) The authors and the Journal agree that the Journal publishes the reviewed and accepted manuscript after technical construction in printed and in electronic form;
5) The authors and the Journal agree not to lay any claim to financial demand;

6) The authors can ask for an amendment or errata related to the publication, which will be published in the subsequent edition of the Journal on a maximum of one page. Other additions or remarks to the article after publication will be judged by the editorial board;
7) This agreement for publication will become lawful on the authors' side from submitting the manuscript, on the Journal's side from the announcement of the publication's acceptance. In the case this procedure occurs through electronic channels, this agreement is valid without an additional signed copy.

Deposit Policy

The authors are permitted to deposit all versions of their papers in institutional or subject repositories, embargo not applied. Disclaimer: The authors are responsible by the content deposited by themselfs, therefore careful evaluation is advised prior making any deposits. The Periódico Tchê Química can not offer support, or track, the content deposited by the authors.

The paper version includes:

Authors may deposit and use the paper version as follows:

Helping authors and institutions make informed and confident decisions in open-access publication and compliance.

Please make sure that you consult our policies on the website to prevent any disputes or doubts. Contact here.


Peer review: Double-blind peer review. The authors do not know the reviewers, and the reviewers do not know the authors. This model reduces the possibility for the authors to pressure the reviewers for results and reduces the chances for the reviewers to conceive favors for the authors.

Plagiarism: The Journal routinely screens article submissions for plagiarism, normally the journal screens the text using Grammarly or ProWritingAid (complementary methods may be used, such as an internet search on DuckDuck Go or Google)

Repository policy: Authors are permitted to post their work online (e.g., in institutional repositories or on their website) after the complete submission process and final publication of the original manuscript, and the authors are responsable by the informations that they present.


All articles undergo thorough double-blind peer review. This involves a review by at least two independent reviewers.

The double-blind peer-review process

The double-blind peer review is an important part of the publication process. All submissions to Periódico Tchê Química are initially assessed by an Editor, who will decide whether they are suitable for peer review. As the reviewers are voluntary they must receive for evaluation only materials with good publishing potential. Therefore, the editor will filter the manuscripts that are not suitable to avoid the misuse of the time of the reviewers. This filter may include a request for the authors to improve the manuscript or a rejection.

If a member of the journal staff is present in the author list or has any other competing interest regarding a specific manuscript, another member of the Editorial Board will be assigned to assume responsibility for overseeing peer review. Submissions suitable for consideration will be sent for peer review by appropriate independent experts identified by the editor. The names of the authors are removed from the file to avoid their identification. The editor will decide based on the reports of the reviewers, and authors will receive a notification based on these reports along with the editorial decision on their manuscript. The authors should note that even in the light of one positive report, concerns raised by another reviewer may fundamentally undermine the study and result in the manuscript being rejected.

The practice of peer-review aims to ensure that only good science is published. It is an objective process at the heart of good scholarly publishing and is carried out by all reputable scientific journals. All referees play a vital role in maintaining the high standards Review Policy and all manuscripts are peer-reviewed following the procedure outlined below.

Initial manuscript evaluation

The Editor first evaluates all manuscripts to check their suitability to the AIM and SCOPE of the Journal, apart from critical issues like Plagiarism and Citation manipulation. It is rare, but an exceptional manuscript can be accepted at this stage. Manuscripts rejected at this stage are insufficiently original, have serious scientific flaws, have poor grammar or English language, or are outside the journal's aims and scope. Those that meet the minimum criteria are normally passed on to at least 2 experts for review. The image of the Publication Flow Chart provides a graphical representation of the publication process. Let us focus on the actions that start with the submission done by the author until the double-blind per-review moment.

    Stages of the review process
  1. The author starts the submission process by sending the cover letter file and the manuscript by e-mail; there are templates for the cover letter and the manuscript preparation available for download, so it is expected that at least the cover letter uses the template. The authors can recommend potential reviewers on the manuscript submission process. The editors will check to ensure no conflicts of interest before contacting those reviewers and will not consider those with competing interests. Reviewers are asked to declare any conflicts of interest. Authors could also enter the names of potential peer reviewers they wish to exclude from consideration in the peer review of their manuscript during the initial submission. The editorial team respects these requests as long as this does not interfere with the objective and thorough assessment of the submission;
  2. After receiving the submission, the Editor will verify its content for completeness, scope, structure, plagiarism, and quality. When necessary, the submission fee will be charged at this point. From this initial desk review, the possible results are:
    1. Rejection of the manuscript. In this scenario, the authors can submit the manuscript to another journal.
    2. Return to the authors for improvements. The authors must resolve all the appointments made by the Editor prior to the return of the manuscript. A new desk review will be done.
    3. Procced to double-blind peer review. At least two independent reviewers will be selected, normally by an editor, to evaluate the content of the manuscript. The reviewers will return their comments to the Editor. Based on the reviewer analysis, the Editor may approve the manuscript, request improvements, or reject the manuscript.
  3. If the reviewers and editors approve the manuscript, it will proceed to publication.
  4. Post Publication discussions and corrections. The Periódico Tchê Química follows the guidance from COPE regarding ethical concerns for published articles. Complaints and Appeal Editor in Chief e-mail at is available for contact should the authors have an objection or disagreement pertaining to the publication process in The Periódico Tchê Química. Every complaint will be acknowledged and handled to resolve the issue accordingly. In addition, articles may be retracted for scientific or ethical reasons, which can be requested by the author(s) or the Editor. Articles found to be seriously flawed or violated ethical guidance from COPE will be retracted to correct the scientific record. The retracted article will be noticed on the website of the journal alongside information regarding the reason for the retraction.

Publication work flow

Please take a moment to watch this instructional video regarding the publication procedures. (video out of date)

Type of Peer-Review

The Periódico Tchê Química employs double-blind peer-reviewing, where both the referee and author remain anonymous throughout the process.

Referee's report form


Referees are asked to evaluate whether the manuscript is original; methodologically sound; follows appropriate ethical guidelines; has results clearly presented and supports the conclusions, and correctly references previous relevant work. Language correction is not part of the peer-review process, but referees may, if so wish, suggest modifications to the manuscript.

How long does the review process take?

The review processing time might take up to 90 from the date of receiving the paper. Should the referee's reports contradict one another or a report is unnecessarily delayed, a further expert opinion will be sought. The decision of the editor will be sent to the author with recommendations made by the referees, which usually include verbatim comments by the referees. Revised manuscripts might be returned to the initial referees, who may request another manuscript revision.

Final report

A final decision to accept or reject the manuscript will be sent to the author, and any recommendations made by the referees. It may include verbatim comments by the referees.

The Decision of the Editor is final

Referees advise the editor, who is responsible for accepting or rejecting the article.


Periódico Tchê Química will follow the COPE guidelines (CLICK HERE <>) outlining how to deal with cases of suspected misconduct.

Research misconduct

All research involving humans (including human data and human material) and animals must have been carried out within an appropriate ethical framework (see our research involving animals - Animal Ethics Committees (A.E.C.s) and Ethics approval for research involving human participants, human material, or human data information). Suppose there is suspicion that research has not taken place within an appropriate ethical framework. In that case, the editor may reject a manuscript and may inform third parties, for example, author(s)' institution(s) and ethics committee(s). In cases of proven research misconduct involving published articles or where the scientific integrity of the article is significantly undermined, articles may be retracted.


Peer reviews are extremely important to the editorial process and quality of the journal. A well-done review is also important to guide authors in revising their work.

In case you have any conflicts of interest in reviewing a manuscript, please contact any of the editors of the Journal. The manuscript will be assigned to another reviewer.

Conflicts of interest may include:

The tone of the Review.


PLEASE NOTE: All submitted reviews are confidential and are the property of PERIÓDICO TCHÊ QUÍMICA and may not be submitted for dissemination or publication elsewhere.
Manuscripts should be treated as confidential material. If you want to solicit the expertise of another colleague to review it, please contact any of the editors-in-chief before doing so. It is recommended that you keep a copy of your review narrative for three months.
If you have any questions, please don't hesitate to contact any of the editors-in-chief.
All manuscripts are peer-reviewed by at least two independent referees. The evaluation is based on the form indicated above. The review sheets will be sent to the author(s) anonymously.

Revised manuscripts

Manuscripts returned to authors for revision should be sent back to the editors within three months. The revised manuscript should be submitted to the same e-mail address by the author who originally submitted the article. The author should also answer the referees' comments, detailing changes made in the new version and, in case some of the referees' suggestions were not accepted, justifying the reason for this. After the submission has been checked by the editors, another e-mail will be sent with the final comments and suitable information.

Final version

As soon as all questions about referees' comments and the revision itself are solved, the editors will notify the author if the article was accepted or refused through an e-mail message. The editors of Periódico Tchê Química reserve the right to make small changes to the manuscript, if necessary, to adjust them to the rules of the Journal or improve the style, respecting naturally the content of the article. Whatever the nature of the manuscript, it should be original in terms of methodology, information, interpretation, or critique. Two referees will attest to the quality of the article.

Aims & Scope

The Periódico Tchê Química invites submissions relating to: * Due to its origins and limitations the journal reserves the right to not cover all the areas of all the sciences that it covers. For these reasons, the authors are encouraged to contact the journal prior to initiating a new submission and solve all possible doubts that may emerge.

Editorial board


Assistant Editors

Managing editor

Associate Editors

Emeritus Editors

Instructions for Authors

After ensuring you have followed all applicable guidelines to your manuscript, you should send the manuscript file (Microsoft word format - .DOC) along with the cover letter file (editable PDF) to
The manuscript submission message to the Journal should be as follow:

Dear Editor-in-chief
Periódico Tchê Química
281/202, Carlos Tarasconi Av. District: Sagrada Familia. Postal Code: 95320-000. Nova Prata - RS. Brazil.
(new address, starting in 2023)

Please find enclosed a manuscript entitled: "Title" which I am submitting for consideration for publication in Periódico Tchê Química.

I, [Insert the name of the corresponding author here] (Corresponding author) certify that:
* The manuscript is the original work of all authors.
* All authors made a significant contribution to this study.
* This manuscript has not been submitted for publication and has not been published in any other journal.
* All authors have read and approved the final version of the manuscript.

Thank you for your consideration of my work! Please address all correspondence concerning this manuscript to me and feel free to correspond with me by e-mail (Corresponding author's email address).


[Give here name, contact address, contact phone number, email of the corresponding author. Corresponding author must be one of the authors of the manuscript.]
First Name - Middle Name - Surname
Complete Mailing Address
Postal Code
Contact Phone Number: [Country prefix followed by full phone number]
Contact Email:

[list of all files attached such as manuscript, cover letter, and any other relevant files as supplementary materials, images, appendix]

On submitting an article, a cover letter is requested in the same e-mail message. In this letter, the e-mails of all authors, as well as all information regarding the article like the title, name, and the address of the authors, must be given. In the case of multiple authors, the corresponding author should be indicated. The corresponding author will be notified of acceptance, rejection, or need for revision.


Preparation of Manuscripts

  1. Preparation of Manuscripts 
  2. The first page of the material
  3. The main text part of the material
  4. Guidelines for References
  5. Figures
  6. Tables
  7. Mathematical expressions
  8. Supplementary material

1. Preparation of Manuscripts


All manuscripts must be written in English or Portuguese and submitted as a Microsoft Word document only using the template (CLICK HERE) of the Journal. Manuscripts should be written following the guidelines below.

Please observe the following points in preparing manuscripts. Papers not conforming strictly to these instructions may be returned to their authors for appropriate revision or may be delayed in the review process.

READABILITY: Manuscripts should be written in clear, concise, and grammatically correct English (American English). The editors cannot undertake wholesale revisions of poorly written papers. Every paper must be free of unnecessary jargon and readable by any specialist in the related field. The abstract should be written in a structured format that will be comprehensible to readers who are not experts in the subject matter.

PROOFREADING: Please proofread carefully for both errors and inconsistencies in the following: spelling (especially of scientific terminology, proper names, and foreign words), mathematical notation, numerical values in tables and text, and accuracy of quotations. The Journal will evaluate the file, seeking English grammatical issues, correctness, clarity, and engagement errors. There will be a tolerance of up to 100 errors in all manuscripts. In case more errors are found, editors will allow the authors to resubmit again and, in case these errors persist, a proofreading fee will be charged.

GENERAL FORMAT: The completed paper has to be written in English and submitted as a Word document only using the template of the Journal. Page size: A4, line spacing: single, font type: Arial. Please leave headers and footers unchanged since the editors should fill them. Please check the guidelines for accurate information based on all categories (review articles and technical notes). A single file of the whole manuscript should then be submitted through the e-mail of Periódico Tchê Química e-mail ( along with the COVER LETTER. The Journal no longer accepts submissions in any other form than by E-MAIL (

FORMAT FOR INITIAL SUBMISSION: Title, Author(s), abstract (maximum 300 words), Keywords (at least 3, maximum 5), Main text (Introduction, Review of Literature, Definitions (if any), Materials and Methods or Methodology, or Development, or Background, Results and Discussion or Findings, Conclusions), Acknowledgements (if any), References, Appendix (if any). This structure of the main text is not obligatory, but the paper must be logically presented. Footnotes should be avoided. The main text must be written with font size 11, justify. Within each main section, three levels of subheadings are available, and the titles must be bold, bold, and italic, italic, respectively. The manuscript should contain the whole text, figures, tables, and explanations. For more details, please check the journal template.


TITLE: PORTUGUESE, ENGLISH, and the third language if the author's native language is not English or Portuguese. The editors can provide the title in Portuguese for those for whom Portuguese is not the first language. It should be brief and informative. The title should reflect essential aspects of the article in a preferably concise form of not more than 100 characters and spaces: font size 12, capital letters, center alignment.

BY-LINE: Names (size 12, Arial, small capital) of the authors. No inclusion of scientific titles is necessary. For two or more authors, place their names in different lines, and please indicate the corresponding author with * in superscript. The corresponding author should be the one submitting the article online, and an e-mail given (only one e-mail) below the addresses of all authors. Authors from different institutions must be labeled with numbers in superscript after the names. The affiliation of the authors should also be given (size 10).
As in:
Author Complete Name* (Arial, size 11, bold)
University name, Faculty or Institute name, Department name. Country (Arial, size 9, italics)

ABSTRACT: PORTUGUESE, ENGLISH, and a third language if the author's native language is not English or Portuguese. The editors can provide the Abstract in Portuguese for those for whom Portuguese is not the first language. Required for all manuscripts in which the problem, the principal results, and conclusions are summarized. The abstract must be self-explanatory, preferably typed in one paragraph, and limited to 300 words. It should not contain formulas, references, or abbreviations. The name ABSTRACT should be written in capital letters, Arial, size 12, bold, left alignment. The abstract should be written in Arial, size 10, justify.

KEYWORDS: PORTUGUESE, ENGLISH, and a third language if the author's native language is not English or Portuguese. The editors can provide the Keywords in Portuguese for those for whom Portuguese is not the first language. Authors should provide appropriate and short keywords that encapsulate the principal topics of the paper. The maximum number of keywords is 5 not including items appearing in the title. The keywords should be supplied, indicating the scope of the paper. Size 10, italic, justify, only the word Keywords must be bold, left alignment.

The authors should include Abbreviations and Nomenclature listings when necessary.


The words 1. Introduction, Review of Literature, Definitions (if any), 2. Materials and Methods or Methodology, or Development, or Background, 3. Results and Discussion of Findings, 4. Conclusions, 5. DECLARATIONS, and 6. HUMAN AND ANIMAL-RELATED STUDIES must be written in capital letters, Arial, font size 12, left alignment, bold. Sections that are not necessary in the manuscript can be subtracted.


The introduction must clearly state the problem, the reason for doing the work, the hypotheses or theoretical predictions under consideration, and the essential background. It should not contain equations or mathematical notation. A brief survey of the relevant literature so that a non-specialist reader could understand the significance of the presented results. A good introduction should ideally have 3-5 well-explained paragraphs and should finish pointing out the AIM of the study.


Provide sufficient details to the reader to understand how the study was performed. Using subsections to present the materials and methods separately is good practice.


The materials section of a scientific manuscript describes the materials and methods used in the study, including the equipment, reagents, and procedures used to conduct the research. It should provide enough detail for another researcher to replicate the study. Typically, the materials section should include:

  • A description of the study design, including the specific methods and procedures used.
  • Information on the equipment and materials used in the study, including the sources and specific models of any equipment used.
  • Information on the reagents and chemicals used in the study, including the sources and specific products used.
  • A detailed description of the methods used, including the procedures followed and any specific techniques or procedures used.
  • Information on any ethical considerations, including any permits or approvals obtained for the study, should be placed in section 6.


The methods section of a scientific manuscript is a detailed description of the procedures and techniques used in the study. It should provide enough information for another researcher to replicate the study. Typically, the methods section should include:

  • A detailed description of the study design, including the specific methods and procedures used.
  • Information on the subjects or samples used in the study, including the number, characteristics, and how they were selected.
  • Information on the equipment and materials used in the study, including the sources and specific models of any equipment used.
  • A detailed description of the procedures, including any specific techniques or protocols.
  • Information on the data analysis methods, including any statistical methods and software used.

It is important to note that the methods section should be written clearly and concisely and accessible to a general scientific audience. The methods should be described in detail to allow another researcher to replicate the study. Additionally, it should be consistent with the aims and objectives of the study and should be supported by the results and data presented in the manuscript.

  • It should be clear from the Methods section how all of the data in the Results section were obtained.
  • The study system should be clearly described. In medicine, for example, researchers need to specify the number of study subjects; how, when, and where the subjects were recruited; that the study obtained appropriate 'informed consent' documents; and what criteria subjects had to meet to be included in the study.
  • In most cases, the experiments should include appropriate controls or comparators. The conditions of the controls should be specified.
  • The outcomes of the study should be defined, and the outcome measures should be objectively validated.
  • The methods used to analyze the data must be statistically sound.
  • For qualitative studies, an established qualitative research method (e.g., grounded theory is often used in sociology) must be used as appropriate for the study question.
  • If the authors used a technique from a published study, they should include a citation and a summary of the procedure in the text. The method also needs to be appropriate for the present experiment.
  • All materials and instruments should be identified, including the supplier's name and location.
  • The Methods section should not have information that belongs in another section (such as the Introduction or Results).
  • You may suggest if additional experiments would greatly improve the quality of the manuscript. Your suggestions should be in line with the study's aims. Remember that almost any study could be strengthened by further experiments, so only suggest further work if you believe that the manuscript is not publishable without it.


The Results and Discussion section of a research paper should succinctly present the key findings while discussing their significance in the context of existing literature and theoretical frameworks. This section is crucial and often challenging to write, requiring careful planning to effectively communicate scientific data. It should be organized into separate subsections for results and discussions, with clear subheadings to enhance readability and coherence.
Tables and figures should be numbered and accompanied by descriptive titles, guiding readers to relevant information during the discussion of results. Emphasize significant or interesting findings, including relevant P-values for statistical tests, negative results, and potential study limitations. The section should cover the following aspects:
  • Findings
  • Comparison with prior studies
  • Limitations of the work
  • Causal arguments
  • Speculations
  • Deductive arguments

3.1. Results

The results section of the manuscript presents the findings of the study and should provide a clear and concise summary of the data and analysis. Typically, the results section should include:

  • A clear and concise summary of the data collected, including tables, figures, and graphs as appropriate.
  • A description of the statistical methods used to analyze the data, including any statistical tests performed and the results of these tests.
  • A presentation of the main findings of the study, including any patterns, trends, or significant results.
  • A description of any outliers or unexpected results and how they were handled.
  • A discussion of the results in relation to the research question or hypothesis, including any implications or conclusions that can be drawn from the data.

It's important to note that the results section should be written clearly and concisely and accessible to a general scientific audience. The results should be presented logically and coherently and supported by the data and analysis presented in the manuscript. Additionally, the results should be consistent with the aims and objectives of the study and should be supported by the methods used.

It's also important to note that the results section should not include any interpretation or discussion, as this should be presented in the discussion section.

3.2. Discussion

Discussion of the results. Point out the significance of the results and place the results in the context of other work and theoretical background.

The discussion section of a scientific manuscript is where the authors interpret the results of the study and place them in the context of existing literature and knowledge. It should provide insight into the significance of the study and its findings. Typically, the discussion section should include:

  • A summary of the main findings of the study and their implications.
  • A comparison of the results with previous studies and existing literature in the field.
  • An analysis of the strengths and limitations of the study, including any potential sources of bias or error.
  • An assessment of the generalizability of the findings and any potential applications or implications of the study.
  • Suggestions for future research or areas for improvement.

It's important to note that the discussion section should be written in a clear and concise manner, and should be accessible to a general scientific audience. The discussion should be based on the results presented in the manuscript and should provide insight into the significance of the study and its findings. Additionally, the discussion should be consistent with the aims and objectives of the study and should be supported by the methods and results.

It's also important to note that the discussion section should not include any new data or results that were not presented in the results section of the manuscript.


Summarize the data discussed in the Results and Discussion showing the relevance of the work and how different it is from other researches. Also, point out the benefits and improvements that can be observed to develop new science standards that can change something in the related field.

The conclusion section of a scientific manuscript summarizes the main findings of the study and highlights the key takeaways from the research. Typically, the conclusion section should include:

  • A summary of the main findings and their significance
  • A summary of the main contributions of the study to the field.
  • An overview of the main limitations and future directions for research
  • A brief statement that reiterates the main objective of the study and whether it was achieved.

It's important to note that the conclusion section should be written in a clear and concise manner and should be accessible to a general scientific audience. The conclusion should be based on the results, discussion, and interpretation presented in the manuscript and provide insight into the significance of the study and its findings. Additionally, the conclusion should be consistent with the aims and objectives of the study and should be supported by the methods, results, and discussion.

It's also important to note that the conclusion section should not include any new data or results that were not presented in the results section of the manuscript. The conclusion should be a brief summary that reiterates the main findings, contributions, and limitations of the study and should not introduce any new information.


5.1. Study Limitations

Please, present all possible limitations faced in the study which might significantly affect the research outcome. If not applicable, write "No limitations were known at the time of the study".

5.2. Acknowledgements

If any, the acknowledgments should be placed in this paragraph and may include a list of people who contributed to the work in the manuscript but not listed in the author list.

5.3. Funding source

Please, provide the funding sources, supporting grants with grant numbers. The name of funding agencies should be written in full. If no funding source exists, write "This research was funded by the authors".

5.4. Competing Interests

Declare any potential conflict of interest that exists in this publication.

5.5. Open Access

This article is licensed under a Creative Commons Attribution 4.0 (CC BY 4.0) International License, which permits use, sharing, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third-party material in this article are included in the article's Creative Commons license unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit


If the work involves the use of human or animal subjects, each manuscript should contain the following subheadings under the declarations section. If not applicable, please delete all section 6.

6.1. Ethical Approval

Please present the ethical approval authority name with the reference number. The author should send a scan of a PDF copy of the ethical approval letter obtained from IRB/ethical committee or institutional head.

6.2. Informed Consent

Write a statement of informed consent taken from the participants to publish this research work. The editor may request to upload a scanned copy.


References should be numbered consecutively as follows. Use the link to format the references, preferably in the APA 5 Ed style.

REFERENCES References should be cited in the text using the name-and-year system (Author, year) (APA FORMAT). Alternatively, the author's surname may be integrated into the text, followed by the year of publication in parentheses. Examples: Grasslands are regarded as important foraging areas for many insectivores in Europe, such as birds (Vichery, 2001; Barnet et al., 2004), bats (Guttinger, 1997) or amphibians and reptiles (Langton and Burton, 1997). However, the knowledge of the overall arthropod availability in such grasslands is scarce since many studies about insect populations concentrate on extensive grasslands on poor, dry or wet soils include only few species or systematic groups (Ellgsen et al., 1997; Gibson et al., 1992; Hansel and Plachter, 2004; Manhart et al., 2004; Kruess and Tscharntke, 2002a, b; Wingerden et al., 1992; Sjodin, 2007a, b; Perner et al., 2005). Carbon dioxide produced by the combustion of biodiesel can be recycled by photosynthesis, thereby minimizing the impact of biodiesel combustion on the greenhouse effect (Korbitz, 1999; Agarwal and Das, 2001).

Cite only essential resources, avoid citing unpublished material. References to papers "in press" must mean that the article has been accepted for publication. At the end of the paper list references alphabetically by the last name of the first author. Please, list only those references that are cited in the text and prepare this list as an automatically numbered list. The word References with size 12, bold, capital letters, left alignment


The Journal uses the APA (American Psychological Association) FORMAT CITATION;


Author's surname, initial(s). Year of publication after the name of the authors (between parentheses). Title of the paper. Name of the Journal in italic, number of the edition also in italic, volume between parentheses and finally initial and final page, and, if the case, retrieved from (what website) or DOI

1. Nikolaeva, L.P., Cherdantsev DV., Titiv K.S. (2017). Characteristics of bone marrow stem cells in patients with complicated diabetes mellitus. The Russian biotherapeutic journal, 16(1): 47-50.

2. Mitchell, J.A. (2017). Citation: Why is it so important. Mendeley Journal, 67(2), 81-95. Retrieved from

3. Karthiga, N., Rajendran, S., Prabhakar, P., Rathish, R.J. (2015). Corrosion inhibition by plant extracts - An overview. Int. J. Nano. Corr. Sci. Eng, 2(4):31-49.

4. Akbulut, S., and Bayramoglu, M.M. (2013). The Trade and Use of Some Medical and Aromatic Herbs in Turkey. Ethno Med, 7(2): 67-77.

For different types of references than scientific papers, the Journal recommends visiting the websites below for more detailed information.


The number of pictures (including graphs and diagrams) should not exceed 15 and should be submitted either in JPEG or PNG formats. All photographs, charts, and diagrams should be numbered consecutively (e.g., Figure 1, Figure 2, Figure 3,…..) in the order in which they are referred to in the text. The caption must appear below the figure (size 11, bold, italic) and should be sufficiently detailed to enable us to understand apart from the text. Explanation of lettering and symbols should be also given in the caption and only exceptionally in the figures. Figures should be of good quality. Scanned figures should be at a resolution of 800 dpi/bitmap for line graphs. Diagrams containing chemical structures should be of high graphical quality and always be of the same size so that they can be uniformly reduced. Figures should have a maximum width of one Journal column (8.5 cm) to be inserted on the body of the text so that they can be applied to the standards of the Journal. If the figures exceed 8.5 cm, they will be placed at the end of the article. Also, authors may be requested to submit each figure as an image file in one of the following formats: jpeg or png. For pictures, graphs, diagrams, and tables identical to material already published in the literature, authors should seek permission for publication from the companies or scientific societies holding the copyrights and send it to the editors of Periódico Tchê Química along with the final form of the manuscript

Important summarized information:
  • Upload the images either in JPEG or PNG formats. Poor quality and resolution figures will not be accepted. Pay attention when scanning or making a print screen of an image. In these cases, the resolution is usually low, and it becomes challenging for the reader to see the information in the figure;
  • Figures should be numbered consecutively, in Arabic numerals, according to the order in which they have been first cited in the text;
  • All information, including numbers and symbols, should be clear and of uniform size. The lettering for figures should be large enough to be legible either in the two or one-column format;
  • Any details to point out a specific view, like symbols, arrows, or letters used in photomicrographs, should contrast with the background;
  • Titles and detailed explanations belong in the legends for illustrations, not on the illustrations themselves.
  • When graphs, scatter-grams, or histograms are submitted, the numerical data they are based on should also be supplied and clear enough.
  • The photographs and figures should be trimmed to remove all the unwanted areas. Also, if photographs of individuals are used, their pictures must be accompanied by written permission to use the photograph.
  • If a figure has been published elsewhere, acknowledge the source and submit written permission from the copyright holder to reproduce the material. A credit line should appear in the legend for such figures.
  • Legends for illustrations: When symbols, arrows, numbers, or letters are used to identify parts of the illustrations, identify and explain each in the legend. Explain the internal scale (magnification) and identify the method of staining in photomicrographs when suitable;
  • The Journal reserves the right to crop, rotate, reduce, or enlarge the photographs to an acceptable size.


Tables should be self-explanatory and should not duplicate textual material. They should be mentioned in the text, numbered consecutively (e.g., Table 1, Table 2, Table 3,....), and accompanied by a title at the top (size 11, bold, italic). Please insert all the tables in the text, and do not enclose huge tables that cannot fit within the page margins. Other important considerations.

  • Tables with more than 15 columns and 30 rows are not acceptable.
  • Number tables, in Arabic numerals, consecutively in the order of their first citation in the text and supply a brief title for each.
  • Place explanatory matter in footnotes, not in the heading.
  • Explain in footnotes all non-standard abbreviations that are used in each table. Use symbols to explain and make all abbreviations clear to the reader.
  • Obtain permission for all fully borrowed, adapted, and modified tables and provide a credit line in the footnote.
  • Tables with their legends should be provided at the end of the text after the references. The tables and their number should be cited at the relevant place in the text.
  • In the text, do not use Tab. For an abbreviation of a Table. Write Table 1, Table 2 instead of Tab.1, Tab.2;


In general, minimize unusual typographical requirements use solidus, built-up fractions. Avoid lengthy equations that will take several lines (possibly by defining the terms of the equation in separate displays). For drawing equations, please use the Equation Editor of Word, if possible. Make subscripts and superscripts clear. Display only those mathematical expressions that must be numbered for later reference or that need to be emphasized. The equations displayed should be consecutively numbered throughout the paper. The numbers should be placed in parentheses on the right of the equation, e.g. (Eq. 1).


Any Supplementary material (extra figures, tables, diagrams, appendix, abbreviations list) should be placed at the end of the manuscript and indicated as such. All supplementary material should also be cited in the text.

At any time of the editing process, editors may ask authors to split off part of the manuscript, presenting it as supplementary material.

Correction and Retraction

The Periódico Tchê Química assumes responsibility to seriously maintain the integrity and completeness of the scholarly record of our content for all end users. Therefore, changes to articles after they have been published online may only be made under the circumstances outlined below. The Periódico Tchê Química emphasizes the authority of articles after publication. Therefore, the journal policy is based on best practices in the academic publishing community. On December 25, 2022, the Periódico Tchê Química introduced an erratum template file.

An Erratum is a statement by the original paper's authors that briefly describes any correction(s) resulting from errors or omissions. In addition, any effects on the conclusions of the paper should be noted. The corrected article is not removed from the online journal, but notice of erratum is given. The erratum is made freely available to all readers and is linked to the corrected article.

A Retraction is a notice that the paper should not be regarded as part of the scientific literature. Retractions are issued if there is clear evidence that the findings are unreliable, this can be as a result of an honest error or misconduct; if the findings have previously been published elsewhere without proper referencing, permission, or justification; if the work was plagiarized; or if the work reports unethical research. To protect the integrity of the record, the retracted article is not removed from the online journal. However, a retraction notice is given, made freely available to all readers, and linked to the retracted article. The authors can publish retractions when they have discovered substantial scientific errors; in other cases, the Editors or Publisher may conclude that retraction is appropriate. In all cases, the retraction indicates the reason for the action and who is responsible for the decision. If a retraction is made without the unanimous agreement of the authors, that is also noted. The Publisher may redact or remove an article in rare and extreme cases involving legal infringement. Bibliographic information about the article will be retained to ensure the integrity of the scientific record.

A Publisher's Note notifies readers that an article has been corrected subsequent to publication. It is issued by the Publisher and is used in cases where typographical or production errors (which are the Publisher's fault) affect the integrity of the article metadata (such as title, author list or byline) or will significantly impact the readers' ability to comprehend the article. The original article is removed and replaced with a corrected version. Publisher's Notes are freely available to all readers. Minor errors that do not affect the integrity of the metadata or a reader's ability to understand an article and that do not involve a scientific error or omission will be corrected at the Publisher's discretion.

The original article is removed and replaced with a corrected version in such a case. The date the correction is made is noted on the corrected article. Authors should also be aware that an original article can only be removed and replaced with a corrected version less than one year after the original publication date. Corrections to an article with a publication date older than one year will only be documented by a Publisher's Note.

The following guideline may also be helpful: COPE Guidelines for Retracting Articles

Templates and instructions

Please, DOWNLOAD HERE the files (TEMPLATE AND COVER LETTER) required to perform the submission process of the manuscript.

You will be downloading a compressed file in which there will be two PDFs files (FEES FOR AUTHORS and PLANING) as well as two folders with the appropriate TEMPLATE AND COVER LETTER based on the language of your choice (PORTUGUESE / ENGLISH)

Please, fill in the Cover Letter (editable PDF) and submit it along with the manuscript file (.DOC) in one single e-mail to All further correspondence regarding the submission must be made as a reply to the original message.

Guidelines for publication

General - Articles suitable for publication Periódico Tchê Química (PTQ) are those that cover the traditional fields of Chemistry, Biology, Physics, Mathematics, Pharmacy, Medicine, Engineering, Agronomical sciences, and Education in Science. Articles should conform to one of the categories below:

Original Articles (in Portuguese or English): for communicating original research. Articles should follow the usual form of presentation, including the IMRAD structure (introduction, methodology, results, discussion, and conclusions) as appropriate for the work being submitted. They should have a maximum of 20 pages, including figures, tables, diagrams. All pages should be numbered following the template.

Review Articles (in Portuguese or English): for communicating progress in a specific field of Chemistry, Biology, Physics, Mathematics, Pharmacy, Medicine, Engineering, Agronomical sciences, and Education in Science, to provide a critical account of the state of the art from the point of view of the highly qualified and experienced specialist. They should have a maximum of 40 pages, including figures, tables, diagrams. All pages should be numbered following the template. Authors need to have publications in the field reviewed attesting their experience and qualification. Before submitting the manuscript, authors should send an e-mail to the editors with an abstract of the review and a letter explaining the relevance of the publication. The material will be examined by the editors and, once approved, authors will be requested to submit the full manuscript, according to PTQ guidelines.

Technical Notes (in Portuguese or English): for communicating methods, validation of methods, techniques, equipment, and accessories developed in the author's laboratory or according to the professional experience of the authors in checking some situations at the site. They should have a maximum of 25 pages, including figures, tables, and diagrams. All pages should be numbered following the template.

Interviews (in Portuguese or English): for communicating interviews linked to one of the subjects of the interest of Periódico Tchê Química. The interview should have a maximum of 20 questions or 15 pages. The person who is going to be interviewed does not necessarily need to be a researcher. It may be another person since the subject to be discussed shows relevance in the field of science. All pages should be numbered following the template.

Short Communications - Short Communications (in Portuguese or English): Short Communications are short papers that present original and significant material for rapid dissemination. For instance, Short Communication may focus on a particular aspect of a problem or a new finding that is expected to have a significant impact. Short articles include, but are not limited to the discovery or development of new materials, cutting-edge experiments, and theory, the novelty in simulation and modeling, elucidation of mechanisms. Short Communications are limited to 3000 words and are not subdivided. The paper should contain an abstract, main body, and references, and contain no more than 6 figures or tables, combined. The abstract is limited to 100 words.

Case Study - Case Study (in Portuguese or English): a case study research paper examines a person, place, event, phenomenon, or another type of subject of analysis to extrapolate key themes and results that help predict future trends, illuminate previously hidden issues that can be applied to practice, and/or provide a means for understanding an important research problem with greater clarity. A case study research paper usually examines a single subject of analysis, but case study papers can also be designed as a comparative investigation that shows relationships between two or more subjects. The methods used to study a case can rest within a quantitative, qualitative, or mixed-method investigative paradigm. A case study as a qualitative methodology is an exploration of a time- and space-bound phenomenon and requires much more from their authors who are acting as instruments within the inquiry process. In the case study methodology, a variety of methodological approaches may be employed to explain the complexity of the problem being studied. A case study research is defined as a qualitative approach in which the investigator explores a real-life, contemporary bounded system (a case) or multiple bound systems (cases) over time, through detailed, in-depth data collection involving multiple sources of information, and reports a case description and case themes. The unit of analysis in the case study might be multiple cases (a multisite study) or a single case (a within-site case study).

    Other categories accepted for publication by this Journal:
  • Book review
  • Forum article

Publication fees


Periódico Tchê Química is a self supporting organization and does not receive funding from any institution/government. Hence, the management of the Journals is solely financed by the Article Processing Charges (APCs) received from authors. The manuscript APCs are required to meet operations expenses such as:

Editorial work:

  • administrative support, journal development.
  • Technical infrastructure and innovation: development, maintenance, and operation of the online system of the journal and websites; internet services; webhosting; application development and support; electricity;
  • Production of articles: formatting, and editing;
  • Marketing: initiatives to ensure that readers and authors know the work published in the journal;
  • Customer service: response to authors and readers;

a) Rugular publication fee - USD 0
b) Brazilian authors, R$ 0.

2. Additional fees of publication
a) Acceptance Letter for article publication

The acceptance letter is an optional service of the Journal. If the authors need a document to prove that their article has been peer-reviewed and accepted for publication, they may request, upon payment of a fee of USD 250, an acceptance letter for publication of the article.

NOTE 1: THE LETTER OF ACCEPTANCE may be issued if, and only if, the article has undergone a complete peer-review and is considered ACCEPTED for publication. Letters will NOT be issued for newly sent articles that have not yet been appropriately evaluated and peer-reviewed.

NOTE 2: The Journal does not agree with the trade-in documents that can attest to the publication of articles that have not gone through the due process of peer-review and are legitimately considered approved for publication in the subsequent edition.

NOTE 3: THE LETTER OF ACCEPTANCE may be revoked at any time if, concerns about the manuscript emerge.

If there is no need, additional fees are not charged.

3. Free publication
a) Young scientists that are publishing the first manuscript of their career. Requirements: Copy of the curriculum without publications; maximum of 2 authors; one manuscript previously accepted in the Southern Brazilian Journal of Chemistry (the manuscript may be from the author or from colleagues, provided that the extra purpose of the collaboration is notified at the time of submission), or two manuscripts previously accepted in the Journal of Law, Public Policies, and Human Sciences (manuscripts may be from the author or from colleagues, provided that the extra purpose of the collaboration is notified at the time of submission);

b) Members of the Editorial Board (Advisory Board and Scientific Council) of the Journal;

c) Longtime collaborators. Authors who have published 4 manuscripts (paid your full corresponded price) at Periódico Tchê Química, the fifth (5th) manuscript will be free of charge. After that, this cycle starts again, that is, for every five (5) articles published, one will be free of publication fees.

d) Paper considered by the Editors of high quality, priority, and relevance for the development of the society shall pay no fees. Note that this condition is a small recognition prize, not something that you may request.

e) Authors who support other journals of our project (Southern Journal of Sciences <> with 2 manuscripts approved for publication (it can be one paper in each Journal or 2 papers in the same Journal of your choice);

Thank you very much for choosing Tche Quimica Journal to publish your paper! We would be happy if you consider the Journal to submit any further paper in the near future.

General information


Year of the first issue: 2004.

From 2004, the year of its first issue, until 2018, the Journal had been published in yearly volumes of two. All issues are available for download in the ARCHIVE section of the Journal website.

Starting in 2019, Periódico Tchê Química became triannual, publishing 3 issues per year (one issue is published in MARCH, one in JULY, and one in NOVEMBER). So it has remained up to the present.

Articles are accepted continuously during the year. The estimated time between the submission and publication of an article is about 4 months.

The printed version of the Journal (ISSN: 1806-0374) is disseminated by

  • distribution to the leading libraries in Brazil and abroad;
  • delivery to subscribers by mail;
  • purchase of copies in the editorial office;
  • dissemination at scientific events.

The electronic version of the Journal (ISSN: 2179-0302) is published on its website <>;

The editorial board supports the principles of free dissemination of scientific information (open-access).

Currently developed by Dr. D. Scientific Consulting - MEI.

Printed ISSN: 1806-0374

Electronic ISSN: 2179-0302

Publication Schedule and Capacity

  • The Journal has a triannual publishing frequency (MARCH, JULY, and NOVEMBER).
  • Plan your publication with us. Please, CLICK HERE TO CHECK the publication schedule of the Journal;
  • The number of manuscripts published per issue (MARCH, JULY, and NOVEMBER) and per year is limited.
  • The Journal publishes, AT MOST, 100 (one hundred) papers PER ISSUE or 300 (three hundred) papers PER YEAR.
  • When the Journal achieves its publication capacity, the paper might be published in the first or second subsequent issue.
  • To keep the quality and standard of the Journal, THERE WILL BE NO NEW EXPANSIONS IN THE JOURNAL PUBLICATION FREQUENCY OR SIZE BEFORE 2025 (or even later). This Journal has achieved its maximum publication capacity according to its team. This will help to preserve the quality of the Journal.