首页|Distribution,bioaccumulation,trophic transfer and risk assessment of trace elements in fish from a typical shallow outflow lake basin,China
Distribution,bioaccumulation,trophic transfer and risk assessment of trace elements in fish from a typical shallow outflow lake basin,China
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Fish are important food sources for humans,and the availability of appropriate amount of trace elements(TEs)plays a crucial role in fish growth.Currently,due to large volumes of sewage discharge,high levels of certain elements are present in aquatic environments,and these elements accumulate in fish and potentially affect human health.In this study,the distribution and bioaccumulation capacity of trace elements in six dominant fish species from Chaohu Lake(China)were analyzed.The results showed that the bioaccumulation capacity of fish for Zn was greater than other TEs.And the source of the TEs in the fish were explored along with the concentration of the TEs in the aquatic environment,which indicated that TEs in fish were mainly obtained through ingestion and indirectly affected by the industrial activities in the basin.Additionally,stable carbon and nitrogen isotopes were used to classify the trophic levels and explore the biological magnification of TEs of the fish.It was found that Sb and Sr showed biomagnification with the increase of trophic level of fish.Based on the above analyses,the environmental biogeochemical cycle model of TEs in the lake was distinguished and established,which can offer valuable insights for sustainable fishery management in the downstream Yangtze River Delta ecosystem.
Trophic levelBioaccumulationRisk assessmentTrace elements
Miao He、Guijian Liu、Xiaodan Shi、Lei Wu、Qiang Chen
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CAS Key Laboratory of Crust-Mantle Materials and Environment,School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China
Anhui Academy of Environmental Sciences,Hefei 230022,China
School of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China
Key Research and Development Program of Anhui Province(China)National Natural Science Foundation of ChinaYouth Project of Anhui Natural Science Foundation(China)
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