Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China
Yu, XJ; Li, HX; Pan, K; Yan, Y; Wang, WX; wwang@ust.hk
2012
发表期刊MARINE POLLUTION BULLETIN
ISSN0025-326X
卷号64期号:8页码:1699-1704
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.
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
关键词Mercury Sediment Sequential Extraction Gut Juice Pearl River Estuary
学科领域Environmental Sciences ; Marine & Freshwater Biology
语种英语
资助项目LMB
WOS记录号WOS:000307492800034
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被引频次:35[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/9844
专题中科院海洋生物资源可持续利用重点实验室
通讯作者wwang@ust.hk
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GB/T 7714
Yu, XJ,Li, HX,Pan, K,et al. Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China[J]. MARINE POLLUTION BULLETIN,2012,64(8):1699-1704.
APA Yu, XJ,Li, HX,Pan, K,Yan, Y,Wang, WX,&wwang@ust.hk.(2012).Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China.MARINE POLLUTION BULLETIN,64(8),1699-1704.
MLA Yu, XJ,et al."Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China".MARINE POLLUTION BULLETIN 64.8(2012):1699-1704.
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