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Accumulation and human health risk assessment of trace elements in two fish species, Cirrhinus mrigala and Oreochromis niloticus, at Tarukri Drain, District Rahimyar Khan, Punjab, Pakistan

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Abstract

The toxic discharge of heavy metals into the water affects the aquatic ecosystem as well as the human population interacting with it because of their toxicity, bioaccumulation, long persistence, and transfer through the food chain. Thus, it is very important to conduct studies to determine the level of heavy metal pollution in order to better control, manage, and preserve the pollution of aquatic ecosystems. This study assessed heavy metal contamination in fish and its associated health risk to the population around the Tarukri Drain, Punjab, Pakistan. Two fish species (Oreochromis niloticus and Cirrhinus mrigala) were collected from three different sites in two different seasons. Collected fish were analyzed for cadmium (Cd), iron (Fe), lead (Pb), nickel (Ni), and zinc (Zn) accumulation using atomic absorption spectrometer (AAS). Furthermore, the human health risks associated with the consumption of affected fish were also assessed. Target hazardous quotient for seasonal consumers was between 0.12, − 1.58 × 10−4, and 0.54 − 3.28 × 10−4 (mg/kg) in O. niloticus and C. mrigala, respectively. While for regular consumers it was between 0.28–3.71 × 10−4 and 1.27–7.68 × 10−4 (mg/kg) in O. niloticus and C. mrigala respectively for the studied heavy metals. Fish sampled from Sadiqabad contained the highest concentration of heavy metals. The analysis of fish organs (kidney, liver, and muscles) showed heavy metal accumulation in the order of kidney > liver > muscles (p < 0.00). The obtained results showed that heavy metal contaminations in both fish species were within the permissible limits recommended by the World Health Organization (WHO). Both sampling seasons (i.e., summer and winter) showed a non-significant difference in heavy metal concentration. The calculated total target hazardous quotient across all heavy metals remained < 1 with only one exception. The carcinogenic risk assessment of heavy metals showed a non-significant effect in both fish species.

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Data availability

The datasets used and analyzed during the current research are available from the corresponding author on request.

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Acknowledgements

The authors would like to acknowledge the Government Sadiq College Women University, Bahawalpur for their assistance.

Funding

This project was generously supported financially by the Government Sadiq College Women University, Bahawalpur.

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Contributions

AMMC, SN, BM, and AN contributed to the design of the study, the interpretation of the results, and the drafting of the manuscript. AMMC, SN, and AN conducted the collection of the data. AMMC, SN, and BM conducted the statistical analyses. All authors have read and approved the final version of the manuscript.

Corresponding author

Correspondence to Borhan Mansouri.

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Ethical approval

This study was approved by the Research and Ethics Committee of Kermanshah University of Medical Sciences (IR.KUMS.REC.1400.479).

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This study was conducted by the World Medical Association Declaration of Helsinki.

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The authors declare no competing interests.

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Responsible Editor: Philippe Garrigues

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Chatha, A.M.M., Naz, S., Mansouri, B. et al. Accumulation and human health risk assessment of trace elements in two fish species, Cirrhinus mrigala and Oreochromis niloticus, at Tarukri Drain, District Rahimyar Khan, Punjab, Pakistan. Environ Sci Pollut Res 30, 56522–56533 (2023). https://doi.org/10.1007/s11356-023-26337-2

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  • DOI: https://doi.org/10.1007/s11356-023-26337-2

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