Risk assessment of heavy metal and pesticide mixtures in aquatic biota using the DGT technique in sediments
文献类型： 外文期刊
作者： Gu, Yang-Guang 1 ; Gao, Yan-Peng 3 ; Chen, Fang 2 ; Huang, Hong-Hui 1 ; Yu, Shao-Hua 2 ; Jordan, Richard W. 7 ; Jiang, Shi-Jun 8 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China
3.Guangdong Univ Technol, Inst Environm Hlth & Pollut Control, Guangzhou 510006, Peoples R China
4.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China
5.Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Peoples R China
6.Chinese Acad Fishery Sci, Key Lab Big Data South China Sea Fishery Resources, Guangzhou, Peoples R China
7.Yamagata Univ, Fac Sci, Yamagata 9908560, Japan
8.Hohai Univ, Coll Oceanog, Nanjing 210024, Peoples R China
关键词： Heavy metals; Pesticides; Ecotoxicological risk; Combined toxicity; Sediments; Bioavailability; Zhelin bay
期刊名称：WATER RESEARCH （ 影响因子：13.4； 五年影响因子：13.847 ）
ISSN： 0043-1354
年卷期： 2022 年 224 卷
页码：
收录情况： SCI
摘要： Heavy metals and pesticides (HMPs) are common contaminants due to their extensive use worldwide. Diffusive gradients in thin films (DGT) are a good method for measuring the bioavailable concentration of pollutants. This study represents the first evaluation of HMP toxicity in aquatic biota using the DGT technique in sediments. Zhelin Bay was selected as the case study site because it has been contaminated by pollutants. Nonmetric multidimensional scaling (NMS) analysis reveals that a diverse range of pollutants (V, Cr, Ni, Cu, Zn, As, Se, InHg, Mo, Cd, Sb, W, Pb, CLP, PYR) are mainly influenced by sediment characteristics. Assessment of single HMP toxicity found that the risk quotient (RQ) values for Mn, Cu, inorganic Hg (InHg), chlorpyrifos (CLP) and diuron (DIU) are significantly higher than 1, indicating that the adverse effects of these single HMPs should not be ignored. The combined toxicity of HMP mixtures based on probabilistic ecotoxicological risk assessment shows that Zhelin Bay surface sediments had a medium probability (54.6%) of toxic effects to aquatic biota.
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