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学科主题: Environmental Sciences; Toxicology
题名: Acid volatile sulfide and simultaneously extracted metals in the sediment cores of the Pearl River Estuary, South China
作者: Fang, T; Li, XD; Zhang, G
通讯作者: Li, XD, Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China
关键词: acid-volatile sulfide ; heavy metals ; sediments ; sequential extraction ; simultaneously extracted metals
刊名: ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
发表日期: 2005-07-01
DOI: 10.1016/j.ecoenv.2004.10.004
卷: 61, 期:3, 页:420-431
收录类别: SCI
文章类型: Article
部门归属: Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China; Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China; Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences ; Toxicology
研究领域[WOS]: Environmental Sciences & Ecology ; Toxicology
摘要: The acid-volatile sulfide (AVS), simultaneously extracted metals (SEM), total metals, and chemical partitioning in the sediment cores of the Pearl River Estuary (PRE) were studied. The concentrations of total metals, AVS, and SEM in the sediment cores were generally low in the river outlet area, increased along the seaward direction, and decreased again at the seaward boundary of the estuary. The amounts of AVS were generally greater in deeper sediments than in surface sediments. SEM/AVS was > 1 in the surface sediments and in the river outlet cores. The ratio was < 1 in the sediments down the profiles, suggesting that AVS might play a major role in binding heavy metals in the deep sediments of the PRE. The SEM may contain different chemical forms of trace metals in the sediments, depending on the metal reaction with 1 M cold HCl in the AVS procedure compared with the results of the sequential chemical extraction. The SEM/AVS ratio prediction may overestimate trace metal availability even in the sediments with high AVS concentrations. (c) 2004 Elsevier Inc. All rights reserved.
英文摘要: The acid-volatile sulfide (AVS), simultaneously extracted metals (SEM), total metals, and chemical partitioning in the sediment cores of the Pearl River Estuary (PRE) were studied. The concentrations of total metals, AVS, and SEM in the sediment cores were generally low in the river outlet area, increased along the seaward direction, and decreased again at the seaward boundary of the estuary. The amounts of AVS were generally greater in deeper sediments than in surface sediments. SEM/AVS was > 1 in the surface sediments and in the river outlet cores. The ratio was < 1 in the sediments down the profiles, suggesting that AVS might play a major role in binding heavy metals in the deep sediments of the PRE. The SEM may contain different chemical forms of trace metals in the sediments, depending on the metal reaction with 1 M cold HCl in the AVS procedure compared with the results of the sequential chemical extraction. The SEM/AVS ratio prediction may overestimate trace metal availability even in the sediments with high AVS concentrations. (c) 2004 Elsevier Inc. All rights reserved.
关键词[WOS]: AQUATIC SEDIMENTS ; SEQUENTIAL EXTRACTION ; QUALITY CRITERIA ; ANOXIC SEDIMENTS ; TRACE-METALS ; PORE-WATER ; BIOAVAILABILITY ; TOXICITY ; PROFILES ; LAKE
语种: 英语
WOS记录号: WOS:000229849400014
ISSN号: 0147-6513
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9236
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Kowloon, Hong Kong, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China

Recommended Citation:
Fang, T; Li, XD; Zhang, G.Acid volatile sulfide and simultaneously extracted metals in the sediment cores of the Pearl River Estuary, South China,ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2005,61(3):420-431
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