Trace Metals (As, Cd, Cr, Cu, Hg, Ni, Pb, Zn) and Stable Isotope Ratios (? 13 C and ? 15 N) in Fish from Wulungu Lake, Xinjiang, China

Fengyu Liu, Min Li, Jianjiang Lu, Zhiqing Lai, Yanbin Tong and Manli Wang
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Fengyu Liu: Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, School of Chemistry and Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
Min Li: Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, School of Chemistry and Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
Jianjiang Lu: Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, School of Chemistry and Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
Zhiqing Lai: The Key Laboratory of Sea Floor Resource and Exploration Technique, Ministry of Education College of Marine Geoscience, Ocean University of China, Qingdao 266100, China
Yanbin Tong: Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, School of Chemistry and Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China
Manli Wang: Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, School of Chemistry and Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China

IJERPH, 2021, vol. 18, issue 17, 1-18

Abstract: Wulungu Lake is a vital fishery area in Xinjiang. However, the concentration, enrichment rules, and sources of As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn in the aquatic organisms, have rarely been investigated. The results suggest that the concentrations of As, Ni, Pb, and Zn were higher than those recommended by the national standards for edible fish in some species. Hg, Ni, Cu, Pb, Cr, and Zn in the fish were dependent on the concentration of trace metals in the water environment ( p < 0.05). The body weights of the fish were significantly negatively correlated with only Hg ( p < 0.05); however, their body lengths were significantly positively correlated with As, Cu, Zn, and Hg contents. Values of ? 13 C ‰ (? 15 N ‰) for the entire fish food web was found to range from ?19.9‰ (7.37‰) to ?27.7‰ (15.9‰), indicating a wide range of trophic positions and energy sources. Based on the linear correlation, As, Cu, Cd, and Zn contents were positively correlated with ? 15 N ( p < 0.05), and bioaccumulation was observed in the fish. The target hazard quotient ( THQ ) of all fish species was less than 1, indicating the absence of potential risks to human health.

Keywords: trace metals; stable isotope ratios; Wulungu Lake; fish; risk assessment (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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