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Assessment of Cu and Zn in Water, Sediments and in the Carnivorous Fish, Channa gachua from River Swat and River Barandu, Malakand Division, Pakistan

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Abstract

This research work was conducted to assess the concentrations of Cu and Zn in the water, sediments and in the freshwater carnivorous fish, Channa gachua, of River Swat and River Barandu in Malakand Division, Pakistan. Samples were collected at selected sites on the two rivers and analyzed for these metals by atomic absorption spectrophotometer. The mean concentrations of Cu and Zn in fish muscles at different sites of River Swat were 0.57–2.38 and 1.28–3.95 mg kg−1 wet weight, respectively, while corresponding concentrations for River Barandu were 0.67–1.70 and 3.27–5.18 mg kg−1 wet weight. Both the metals showed a lower degree of bioaccumulation in the fish muscles as the bioaccumulation factor values were lower than 1. Liver and gills showed higher metal accumulations compared to muscles. The potential human health risk assessment shows that presently both these metals do not pose any toxicological threat to the health of the fish consumers.

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Acknowledgements

The authors are thankful to Prof. Dr. Rup Lal, Professor at Department of Zoology, University of Delhi, India, for gifting a copy of standard literature keys for fish identification and to Mr. Abdur Rahman, Lecturer in Zoology, and Fisheries Specialist at Department of Zoology, University of Malakand, for his help in fish identification. The authors are also thankful to Dr. Muhammad Anwar Sajad, Department of Botany, Islamia College Peshawar, for his cooperation in metal analysis. The two anonymous reviewers are also acknowledged for their valuable comments, which greatly helped to improve the quality of the manuscript.

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Correspondence to Hazrat Ali.

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Ali, H., Ali, W., Ullah, K. et al. Assessment of Cu and Zn in Water, Sediments and in the Carnivorous Fish, Channa gachua from River Swat and River Barandu, Malakand Division, Pakistan. Iran J Sci Technol Trans Sci 43, 773–783 (2019). https://doi.org/10.1007/s40995-018-0615-8

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  • DOI: https://doi.org/10.1007/s40995-018-0615-8

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