Research Article
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Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye

Year 2026, Volume: 9, - , 10.03.2026
https://izlik.org/JA52LW73XX

Abstract

The first confirmed COVID-19 case in Türkiye was reported on March 10, 2020, followed by weekend lockdowns starting April 11–12, 2020. These measures, although limited to weekends and official holidays, led to noticeable reductions in industrial activities, traffic, and human mobility, offering a unique opportunity to evaluate anthropogenic impacts on surface water quality. This study investigates temporal changes in aluminium (Al) and six heavy metals (Fe, Mn, Cu, Cr, Ni, and Zn) in surface waters before and during the lockdown, while assessing potential carcinogenic and non-carcinogenic health risks via ingestion and dermal exposure. Results indicate that, except for Ni, metal concentrations increased during the lockdown, with changes ranging from 7.92% to 83.33% compared to pre-lockdown levels. Both the Heavy Metal Pollution Index and the Heavy Metal Evaluation Index were elevated during the lockdown. Carcinogenic risk assessment revealed significant health risks for both adults and children, and correlation analyses suggest that metals originated from similar sources across both periods. These findings underscore the persistent influence of human activities on water quality, even under temporary mobility restrictions.

Ethical Statement

There are no ethical issues with the publication of this manuscript.

Supporting Institution

Bursa Uludag University Scientific Research Projects, Turkey (Project No: OUAP (MH)-2020/8)

Project Number

Bursa Uludag University Scientific Research Projects, Turkey (Project No: OUAP (MH)-2020/8)

Thanks

Bursa Water and Sewerage Administration General Directorate (BUSKI) for providing the measurement results.

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There are 85 citations in total.

Details

Primary Language English
Subjects Freshwater Ecology
Journal Section Research Article
Authors

Mehmet Ferhat Sari 0000-0001-7114-7286

Fatma Esen 0000-0002-1445-0868

Project Number Bursa Uludag University Scientific Research Projects, Turkey (Project No: OUAP (MH)-2020/8)
Submission Date September 24, 2025
Acceptance Date March 9, 2026
Publication Date March 10, 2026
IZ https://izlik.org/JA52LW73XX
Published in Issue Year 2026 Volume: 9

Cite

APA Sari, M. F., & Esen, F. (2026). Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye. International Journal of Environmental Pollution and Environmental Modelling, 9. https://izlik.org/JA52LW73XX
AMA 1.Sari MF, Esen F. Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye. Int. j. environ. pollut. environ. model. 2026;9. https://izlik.org/JA52LW73XX
Chicago Sari, Mehmet Ferhat, and Fatma Esen. 2026. “Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye”. International Journal of Environmental Pollution and Environmental Modelling 9 (March). https://izlik.org/JA52LW73XX.
EndNote Sari MF, Esen F (March 1, 2026) Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye. International Journal of Environmental Pollution and Environmental Modelling 9
IEEE [1]M. F. Sari and F. Esen, “Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye”, Int. j. environ. pollut. environ. model., vol. 9, Mar. 2026, [Online]. Available: https://izlik.org/JA52LW73XX
ISNAD Sari, Mehmet Ferhat - Esen, Fatma. “Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye”. International Journal of Environmental Pollution and Environmental Modelling 9 (March 1, 2026). https://izlik.org/JA52LW73XX.
JAMA 1.Sari MF, Esen F. Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye. Int. j. environ. pollut. environ. model. 2026;9. Available at https://izlik.org/JA52LW73XX.
MLA Sari, Mehmet Ferhat, and Fatma Esen. “Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye”. International Journal of Environmental Pollution and Environmental Modelling, vol. 9, Mar. 2026, https://izlik.org/JA52LW73XX.
Vancouver 1.Mehmet Ferhat Sari, Fatma Esen. Investigation of the Effects of Metal and Heavy Metal Pollution on Surface Waters Before and During the COVID-19 Lockdown Period in Bursa, Turkiye. Int. j. environ. pollut. environ. model. [Internet]. 2026 Mar. 1;9. Available from: https://izlik.org/JA52LW73XX

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Editors and editorial board members will not use unpublished information disclosed in a submitted manuscript for their own research purposes without the authors’ explicit written consent. Privileged information or ideas obtained by editors as a result of handling the manuscript will be kept confidential and not used for their personal advantage. Editors will recuse themselves from considering manuscripts in which they have conflicts of interest resulting from competitive, collaborative, or other relationships/connections with any of the authors, companies or institutions connected to the papers; instead, they will ask another member of the editorial board to handle the manuscript.

Publication decisions

The editors ensure that all submitted manuscripts being considered for publication undergo peer-review by at least two reviewers who are expert in the field. The Editor-in-Chief is responsible for deciding which of the manuscripts submitted to the journal will be published, based on the validation of the work in question, its importance to researchers and readers, the reviewers’ comments, and such legal requirements as are currently in force regarding libel, copyright infringement and plagiarism. The Editor-in-Chief may confer with other editors or reviewers in making this decision.

Involvement and cooperation in investigations

Editors (in conjunction with the publisher and/or society) will take responsive measures when ethical concerns are raised with regard to a submitted manuscript or published paper. Every reported act of unethical publishing behavior will be looked into, even if it is discovered years after publication. AP-SMART editors follow the COPE Flowcharts when dealing with cases of suspected misconduct. If, on investigation, the ethical concern is well-founded, a correction, retraction, expression of concern or other note as may be relevant, will be published in the journal.

Duties of Reviewers

Contribution to editorial decisions

Peer review assists editors in making editorial decisions and, through editorial communications with authors, may assist authors in improving their manuscripts. Peer review is an essential component of formal scholarly communication and lies at the heart of scientific endeavor. AP-SMART shares the view of many that all scholars who wish to contribute to the scientific process have an obligation to do a fair share of reviewing.

Promptness

Any invited referee who feels unqualified to review the research reported in a manuscript or knows that its prompt review will be impossible should immediately notify the editors and decline the invitation to review so that alternative reviewers can be contacted.

Confidentiality

Any manuscripts received for review are confidential documents and must be treated as such; they must not be shown to or discussed with others except if authorized by the Editor-in-Chief (who would only do so under exceptional and specific circumstances). This applies also to invited reviewers who decline the review invitation.

Standards of objectivity

Reviews should be conducted objectively and observations formulated clearly with supporting arguments so that authors can use them for improving the manuscript. Personal criticism of the authors is inappropriate.

Acknowledgement of sources

Reviewers should identify relevant published work that has not been cited by the authors. Any statement that is an observation, derivation or argument that has been reported in previous publications should be accompanied by the relevant citation. A reviewer should also notify the editors of any substantial similarity or overlap between the manuscript under consideration and any other manuscript (published or unpublished) of which they have personal knowledge.

Disclosure and conflicts of interest

Any invited referee who has conflicts of interest resulting from competitive, collaborative, or other relationships or connections with any of the authors, companies or institutions connected to the manuscript and the work described therein should immediately notify the editors to declare their conflicts of interest and decline the invitation to review so that alternative reviewers can be contacted.

Unpublished material disclosed in a submitted manuscript must not be used in a reviewer’s own research without the express written consent of the authors. Privileged information or ideas obtained through peer review must be kept confidential and not used for the reviewer’s personal advantage. This applies also to invited reviewers who decline the review invitation.

Duties of Authors

Reporting standards

Authors of original research should present an accurate account of the work performed and the results, followed by an objective discussion of the significance of the work. The manuscript should contain sufficient detail and references to permit others to replicate the work. Review articles should be accurate, objective and comprehensive, while editorial 'opinion' or perspective pieces should be clearly identified as such. Fraudulent or knowingly inaccurate statements constitute unethical behavior and are unacceptable.

Data access and retention

Authors may be asked to provide the raw data of their study together with the manuscript for editorial review and should be prepared to make the data publicly available if practicable. In any event, authors should ensure accessibility of such data to other competent professionals for at least 10 years after publication (preferably via an institutional or subject-based data repository or other data centre), provided that the confidentiality of the participants can be protected and legal rights concerning proprietary data do not preclude their release.

Originality and plagiarism

Authors should ensure that they have written and submit only entirely original works, and if they have used the work and/or words of others, that this has been appropriately cited. Publications that have been influential in determining the nature of the work reported in the manuscript should also be cited. Plagiarism takes many forms, from "passing off" another's paper as the author's own, to copying or paraphrasing substantial parts of another's paper (without attribution), to claiming results from research conducted by others. Plagiarism in all its forms constitutes unethical publishing behavior and is unacceptable.

Multiple, duplicate, redundant or concurrent submission/publication

Papers describing essentially the same research should not be published in more than one journal or primary publication. Hence, authors should not submit for consideration a manuscript that has already been published in another journal. Submission of a manuscript concurrently to more than one journal is unethical publishing behavior and unacceptable.

The publication of some kinds of articles (such as clinical guidelines, translations) in more than one journal is sometimes justifiable, provided that certain conditions are met. The authors and editors of the journals concerned must agree to the secondary publication, which must reflect the same data and interpretation of the primary document. The primary reference must be cited in the secondary publication.

Authorship of the manuscript

Only persons who meet these authorship criteria should be listed as authors in the manuscript as they must be able to take public responsibility for the content: (i) made significant contributions to the conception, design, execution, data acquisition, or analysis/interpretation of the study; and (ii) drafted the manuscript or revised it critically for important intellectual content; and (iii) have seen and approved the final version of the paper and agreed to its submission for publication. All persons who made substantial contributions to the work reported in the manuscript (such as technical help, writing and editing assistance, general support) but who do not meet the criteria for authorship must not be listed as an author, but should be acknowledged in the "Acknowledgements" section after their written permission to be named as been obtained. The corresponding author should ensure that all appropriate coauthors (according to the above definition) and no inappropriate coauthors are included in the author list and verify that all coauthors have seen and approved the final version of the manuscript and agreed to its submission for publication.

Disclosure and conflicts of interest

Authors should—at the earliest stage possible (generally by submitting a disclosure form at the time of submission and including a statement in the manuscript)—disclose any conflicts of interest that might be construed to influence the results or their interpretation in the manuscript. Examples of potential conflicts of interest that should be disclosed include financial ones such as honoraria, educational grants or other funding, participation in speakers’ bureaus, membership, employment, consultancies, stock ownership, or other equity interest, and paid expert testimony or patent-licensing arrangements, as well as non-financial ones such as personal or professional relationships, affiliations, knowledge or beliefs in the subject matter or materials discussed in the manuscript. All sources of financial support for the work should be disclosed (including the grant number or other reference number if any).

Acknowledgement of sources

Authors should ensure that they have properly acknowledged the work of others, and should also cite publications that have been influential in determining the nature of the reported work. Information obtained privately (from conversation, correspondence or discussion with third parties) must not be used or reported without explicit, written permission from the source. Authors should not use information obtained in the course of providing confidential services, such as refereeing manuscripts or grant applications, unless they have obtained the explicit written permission of the author(s) of the work involved in these services.

Hazards and human or animal subjects

If the work involves chemicals, procedures or equipment that have any unusual hazards inherent in their use, the authors must clearly identify these in the manuscript. If the work involves the use of animals or human participants, the authors should ensure that all procedures were performed in compliance with relevant laws and institutional guidelines and that the appropriate institutional committee(s) has approved them; the manuscript should contain a statement to this effect. Authors should also include a statement in the manuscript that informed consent was obtained for experimentation with human participants. The privacy rights of human participants must always be observed.

Peer review

Authors are obliged to participate in the peer review process and cooperate fully by responding promptly to editors’ requests for raw data, clarifications, and proof of ethics approval, patient consents and copyright permissions. In the case of a first decision of "revisions necessary", authors should respond to the reviewers’ comments systematically, point by point, and in a timely manner, revising and re-submitting their manuscript to the journal by the deadline given.

Fundamental errors in published works

When authors discover significant errors or inaccuracies in their own published work, it is their obligation to promptly notify the journal’s editors or publisher and cooperate with them to either correct the paper in the form of an erratum or to retract the paper. If the editors or publisher learns from a third party that a published work contains a significant error or inaccuracy, then it is the authors’ obligation to promptly correct or retract the paper or provide evidence to the journal editors of the correctness of the paper.

Duties of the Publisher

Handling of unethical publishing behavior

In cases of alleged or proven scientific misconduct, fraudulent publication or plagiarism, the publisher, in close collaboration with the editors, will take all appropriate measures to clarify the situation and to amend the article in question. This includes the prompt publication of an erratum, clarification or, in the most severe case, the retraction of the affected work. The publisher, together with the editors, shall take reasonable steps to identify and prevent the publication of papers where research misconduct has occurred, and under no circumstances encourage such misconduct or knowingly allow such misconduct to take place.

Access to journal content

The publisher is committed to the permanent availability and preservation of scholarly research and ensures accessibility by partnering with organizations and maintaining our own digital archive.

Article submission/process management is free.

Editor

Environmental Engineering

Editorial Assistant

Environmental Engineering, Air Pollution Modelling and Control, Nanomaterials
Econometrics, Applied Microeconometrics, Ecological Economics, Political Economy Theory, Growth, Development Economics - Macro, Environmental Economy, Applied Statistics
Sustainable Architecture

Editorial Advisory Board

Freshwater and Marine Ecology
Environmental Assessment and Monitoring, Natural Products and Bioactive Compounds, Agricultural Biotechnology Diagnostics
Microbial Ecology, Ecological Applications
Natural Resource Management, Environmental Engineering, Waste Management, Reduction, Reuse and Recycling, Environmental Pollution and Prevention, Soil Pollution and Control, Plant Nutrition and Soil Fertility, Soil Sciences and Ecology, Soil Ecology, Conservation and Improvement of Soil and Water Resources
Human Impacts of Climate Change and Human Adaptation, Urban Economics, Rural and Regional Geography, Land Use and Environmental Planning, Urban Geography in Regional Planning, Regional Analysis and Development, Urban History, City and Regional Planning, Strategic, Metropolitan and Regional Planning, Cultural Heritage Tourism, Visitor and Audience Studies, Cultural Heritage and Conservation, Watershed Management
Animal Cell and Molecular Biology
Engineering, Aerospace Materials, Air Pollution Processes and Air Quality Measurement, Meteorology
Environmental Education and Extension, Environmental Management (Other), Ecological Applications
Microbiology
Climate Change Impacts and Adaptation (Other), Environmentally Sustainable Engineering, Air Pollution Modelling and Control, Life Cycle Assessment and Industrial Ecology
Environmental Assessment and Monitoring, Climate Change-Impact and Adaptation, Air Pollution Modelling and Control, Air Pollution and Gas Cleaning , Renewable Energy Resources
Food Microbiology, Soil Ecology, Soil Microbiology

Publisher

Information and Computing Sciences, Deep Learning, Engineering, Environmental Engineering, Electrical Engineering
 ❤ IJEPEM.