Distribution, bioaccumulation, trophic transfer and risk assessment of trace elements in fish from a typical shallow outflow lake basin, China  

作　　者：Miao He Guijian Liu Xiaodan Shi Lei Wu Qiang Chen 

机构地区：[1]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 [2]Anhui Academy of Environmental Sciences,Hefei 230022,China [3]School of Resources and Environmental Engineering,Hefei University of Technology,Hefei 230009,China

出　　处：《Frontiers of Environmental Science & Engineering》2024年第7期141-156,共16页环境科学与工程前沿（英文）

基　　金：This work was supported by the Key Research and Development Program of Anhui Province(China)(No.2023t07020006);the National Natural Science Foundation of China(No.42272193);the Youth Project of Anhui Natural Science Foundation(China)(No.2108085QD161).

摘　　要：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.

关 键 词：Trophic level BIOACCUMULATION Risk assessment Trace elements 

分 类 号：X523[环境科学与工程—环境工程] X820.4