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Distribution of eight heavy metals in the inner shelf sediments of East China Sea: Risk assessments and sources analysis
Wang, Chunjie; Wang, Zhangwei; Zhang, Xiaoshan
2021
Source PublicationECOSYSTEM HEALTH AND SUSTAINABILITY
Volume7Issue:1Pages:1888656
AbstractAlthough numerous studies on heavy metals (HMs) in sediments have been carried out in the East China Sea (ECS), the knowledge on the recent pollution levels of HMs in coastal region remains not well understood due to the rapid developments of urbanization in eastern China. In this study, 23 surface samples and 4 core samples are collected in the inner shelf of the ECS. The average dry-weight concentrations follow the descending order of Zn, Cr, Ni, Pb, Cu, As, Cd, and Hg (103.6 +/- 26.0, 42.8 +/- 12.4, 37.0 +/- 9.1, 34.7 +/- 11.1, 19.5 +/- 10.3, 15.7 +/- 11.6, 0.056 +/- 0.017, and 0.041 +/- 0.017 mu g g(-1), respectively). HMs concentrations share a similar spatial distribution pattern of TOC content with a decreasing trend from coastline to outer sea. Additionally, HMs concentrations exhibit a decreasing trend from top to bottom sediments, especially for Hg at the open sites due to the wet and dry deposition of atmospheric Hg besides the riverine inputs. The potential ecological risk indices (PERI) values in coastal sediments were about 2-4 times higher than those in open sea. Although the Hg and Cd concentrations were lower by 2-3 orders of magnitude than those of other six metals, the PERI values of Hg (65.5) and Cd (52.1) were 3-40 times higher than those of others. The hierarchical cluster result is consistent with the PCA result, suggesting that Hg, Cd, and As have similar sources and probably mainly originated from anthropogenic emissions.
Department城市与区域生态国家重点实验室
KeywordHeavy metals spatial distribution cores environmental risk east China Sea
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46932
Collection城市与区域生态国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, Chunjie,Wang, Zhangwei,Zhang, Xiaoshan. Distribution of eight heavy metals in the inner shelf sediments of East China Sea: Risk assessments and sources analysis[J]. ECOSYSTEM HEALTH AND SUSTAINABILITY,2021,7(1):1888656.
APA Wang, Chunjie,Wang, Zhangwei,&Zhang, Xiaoshan.(2021).Distribution of eight heavy metals in the inner shelf sediments of East China Sea: Risk assessments and sources analysis.ECOSYSTEM HEALTH AND SUSTAINABILITY,7(1),1888656.
MLA Wang, Chunjie,et al."Distribution of eight heavy metals in the inner shelf sediments of East China Sea: Risk assessments and sources analysis".ECOSYSTEM HEALTH AND SUSTAINABILITY 7.1(2021):1888656.
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