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Metals in wild fish from Gaotang Lake in the area of coal mining, China: assessment of the risk to human health

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Abstract

Environmental pollution can cause metal accumulation in aquatic organisms, but information on metal bioaccumulation in wild fish from coal mining areas is limited. We investigated tissue-specific metal accumulation in six economically important fish species common to Gaotang Lake, China, located in a coal mining area. We also conducted an assessment of potential risks to human health from consumption of these fish. Mean concentrations of arsenic, cadmium, cobalt, copper, mercury, lead, and antimony in the muscle of six fish species were below the corresponding Chinese maximum allowable concentrations except chromium and generally comparable with levels in fish reported by other studies. Tissue distribution patterns suggested that chromium and mercury were easily transported to the muscle, but concentrations of the other six metals were higher in the liver and gills. The daily intake of each metal was estimated at 0.002–0.220 g/day/kg body weight, and the non-carcinogenic health risks associated with the consumption of the fish from Gaotang Lake were acceptable. The results suggest that metal bioaccumulation in wild fish is not high in this coal mining area.

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Funding

Financial support for the study was provided by the National Natural Science Foundation of China (grants 41701554, 41571445, and 41877467) and the State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences (grant 2017024).

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Correspondence to Zhenwu Tang.

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The authors declare that they have no conflict of interest.

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Responsible editor: Severine Le Faucheur

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Cheng, J., Zhang, X., Ren, S. et al. Metals in wild fish from Gaotang Lake in the area of coal mining, China: assessment of the risk to human health. Environ Sci Pollut Res 26, 23754–23762 (2019). https://doi.org/10.1007/s11356-019-05732-8

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  • DOI: https://doi.org/10.1007/s11356-019-05732-8

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