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学科主题: Environmental Sciences; Marine & Freshwater Biology
题名: Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China
作者: Yu, XJ ; Li, HX ; Pan, K ; Yan, Y ; Wang, WX
通讯作者: wwang@ust.hk
关键词: Mercury ; Sediment ; Sequential extraction ; Gut juice ; Pearl River Estuary
刊名: MARINE POLLUTION BULLETIN
发表日期: 2012
卷: 64, 期:8, 页:1699-1704
部门归属: [Pan, Ke; Wang, Wen-Xiong] Hong Kong Univ Sci & Technol HKUST, Div Life Sci, Kowloon, Hong Kong, Peoples R China; [Yu, Xiujuan; Li, Hengxiang; Yan, Yan; Wang, Wen-Xiong] Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marine Bioresources Sustainable Utilizat, Guangzhou 510301, Guangdong, Peoples R China
项目归属: LMB
摘要: Surface sediments sediments and sediment cores collected from the Pearl River Estuary (PRE) were analyzed for total mercury (THg) concentrations and speciation using a sequential extraction method. The mobility of Hg in sediments was also assessed using a series of single extraction methods. The surface sediments from the PRE showed slightly elevated levels of Hg, with concentrations ranging from 109 to 453 ng/g. The vertical profile of THg in sediment cores indicated an accelerated input of Hg over the past decades. The organo-chelated and strong-complexed Hg species were the dominant Hg species in the sediments, while the more mobile phases of Hg made up less than 0.5% of THg. Less than 10% of the Hg in the sediments was extracted by single extraction, depending on the extractant employed. Significant relationships were found between the total organic carbon and THg, geochemical speciation, and extractability, indicating the important role of organic matter in controlling the distribution, mobility, and bioavailability of Hg in sediments. (C) 2012 Elsevier Ltd. All rights reserved.
语种: 英语
WOS记录号: WOS:000307492800034
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/9844
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Recommended Citation:
Yu, XJ; Li, HX; Pan, K; Yan, Y; Wang, WX.Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China,MARINE POLLUTION BULLETIN,2012,64(8):1699-1704
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文件名: Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary.pdf
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