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

第一作者： Gu, Yang-Guang

作者： Gu, Yang-Guang;Wang, Xu-Nuo;Wang, Zeng-Huan;Jiang, Shi-Jun;Gu, Yang-Guang;Jordan, Richard W.;Gu, Yang-Guang;Jiang, Shi-Jun;Gu, Yang-Guang;Gu, Yang-Guang;Gu, Yang-Guang

作者机构：

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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