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Geochemical source, deposition, and environmental risk assessment of cadmium in surface and core sediments from the Bohai Sea, China
Hu Ningjing1; Huang Peng2; Zhang Hui1; Wang Xiaojing1; Zhu Aimei1; Liu Jihua1; Shi Xuefa1
2017
发表期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷号24期号:1页码:827-843
文章类型Article
摘要Geochemical sources, spatio-temporal distribution, and associated environmental risk of Cd in the Bohai Sea were investigated using data from 405 surface sediment samples and two sediment cores. Local point Cd sources, TOC content, and currents are the main controlling factors of Cd distribution. The contribution of Cd from river discharge surpasses that from atmospheric deposition. Sediment-quality guidelines, enrichment factors, and chemical fraction analysis were used to assess metal toxicity in the collected sediments. Results show that Bohai Sea sediments have a moderate Cd enrichment level. This enrichment poses a high risk due to the relatively high mobility and bioavailability of Cd despite measured levels below sediment-quality guidelines at most stations. Vertical profiles of Cd concentrations, Al-normalized enrichment factors, and excess burial fluxes combined with Pb-210 dating reveal the history of Cd pollution in the Bohai Sea over the last century. Data show Cd unvaried before the 1800s, a slight increase from the 1800s to the late 1950s, a decrease from the late 1960s to the 1970s, and an increase from the 1980s to 2001, including a relatively high value in 1998. Historic variation in Cd is closely associated with both natural and anthropogenic activities.
关键词Cadmium Risk Assessment Source Sedimentary Flux Sediment Bohai Sea
DOI10.1007/s11356-016-7800-0
收录类别SCI
语种英语
WOS记录号WOS:000392105700077
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/136290
专题海洋地质与环境重点实验室
作者单位1.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
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GB/T 7714
Hu Ningjing,Huang Peng,Zhang Hui,et al. Geochemical source, deposition, and environmental risk assessment of cadmium in surface and core sediments from the Bohai Sea, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2017,24(1):827-843.
APA Hu Ningjing.,Huang Peng.,Zhang Hui.,Wang Xiaojing.,Zhu Aimei.,...&Shi Xuefa.(2017).Geochemical source, deposition, and environmental risk assessment of cadmium in surface and core sediments from the Bohai Sea, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,24(1),827-843.
MLA Hu Ningjing,et al."Geochemical source, deposition, and environmental risk assessment of cadmium in surface and core sediments from the Bohai Sea, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 24.1(2017):827-843.
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