Mercury distribution, speciation and bioavailability in sediments from the Pearl River Estuary, Southern China

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	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
刊名	MARINE POLLUTION BULLETIN
	2012
卷号	64 期号:8 页码:1699-1704
关键词	Mercury Sediment Sequential Extraction Gut Juice Pearl River Estuary
ISSN号	0025-326X
英文摘要	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.
学科主题	Environmental Sciences ; Marine & Freshwater Biology
资助项目	LMB
语种	英语
WOS记录号	WOS:000307492800034
公开日期	2013-08-28
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/9844]
专题	南海海洋研究所_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
推荐引用方式 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.