Rare earth elements in sediments from a representative Chinese mariculture bay: Characterization, DGT-based bioaccessibility, and probabilistic ecological risk
文献类型： 外文期刊
作者： Gu, Yang-Guang 1 ; Wang, Xu-Nuo 1 ; Wang, Zeng-Huan 1 ; Jordan, Richard W. 3 ; Jiang, Shi-Jun 2 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
2.Hohai Univ, Coll Oceanog, Nanjing 245700, Peoples R China
3.Yamagata Univ, Fac Sci, Yamagata 9908560, Japan
4.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
5.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China
6.Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Peoples R China
7.Sanya Trop Fisheries Res Inst, Sanya 572025, Peoples R China
关键词： Aquaculture; Rare earth elements; Ecotoxicological risk; Combined toxicity; Bioaccessibility; Zhelin bay
期刊名称：ENVIRONMENTAL POLLUTION （ 影响因子：8.9； 五年影响因子：9.5 ）
ISSN： 0269-7491
年卷期： 2023 年 335 卷
页码：
收录情况： SCI
摘要： Rare earth elements (REEs) are emerging contaminants due to their worldwide exploitation in the hightechnology sector. Aquaculture systems, particularly those located within coastal areas, are fragile ecosystems due to anthropogenic impacts regarding urban and aquaculture activities. However, to date, there are no reports on the combined toxicity of rare earth element (REE) mixtures on aquatic biota in sediments from coastal aquaculture systems. In this study, the combined toxicity of REE mixtures based on probabilistic risk assessment indicated that the surface sediments of Zhelin Bay had a 1.86% probability of toxic effects on aquatic biota. The average value of total REEs (TREEs) was 297.37 & mu;g/g, with light REEs representing the major part. A factor analysis (FA)-geographic information system (GIS)-based approach coupled with correlation analysis (CA) revealed that the REEs are derived from anthropogenic sources through fluvial processes.
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