中国科学院南海海洋研究所机构知识库
Advanced  
SCSIO OpenIR  > 热带海洋环境国家重点实验室(LTO)  > 期刊论文
学科主题: Environmental Sciences & Ecology
题名: Seasonal Variation of Acid Volatile Sulfide and Simultaneously Extracted Metals in Sediment Cores from the Pearl River Estuary
作者: Yang, YQ ; Zhang, L ; Chen, FR ; Kang, ML ; Wu, SJ ; Liu, JS
通讯作者: frchen@gig.ac.cn
关键词: Heavy metals ; AVS ; SEM ; seasonal variation ; bioavailability
刊名: SOIL & SEDIMENT CONTAMINATION
发表日期: 2014
卷: 23, 期:4, 页:480-496
收录类别: sci
部门归属: [Yang, Yongqiang ; Chen, Fanrong ; Kang, Mingliang ; Wu, Shijun ; Liu, Jinsong] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China ; [Zhang, Ling] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou 510640, Guangdong, Peoples R China ; [Kang, Mingliang] Peking Univ, Beijing Natl Lab Mol Sci, Radiochem & Radiat Chem Key Lab Fundamental Sci, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
项目归属: LTO
资助者: National Natural Science Foundation of China [40903047]; Chinese Academy of Sciences [ZKCX2-SW-212]
摘要: The simultaneously extracted metals/acid volatile sulfide (SEM/AVS) method is widely used to estimate the toxicity of metals in sediment. In this study, SEM and AVS concentrations were obtained by the cold-acid purge-and-trap technique during spring (April) and winter (December) at six sites in the Pearl River estuary. Total organic carbon, grain size distribution, and total metals were also measured in winter samples. AVS concentrations in spring sediments were slightly higher than those in winter sediments, except at site 2. AVS concentrations showed more distinct locational and temporal variation compared with SEM concentrations. Generally, AVS contents increased downcore, whereas SEM concentrations decreased slightly with depth. Higher SEM concentrations were observed in the west shoal (sites 2, 6, and 7) and site 4 (1.24 approximate to 4.28mol center dot g(-1)) compared with those at sites 1 and 3 (0.73 approximate to 2.14mol center dot g(-1)) in the middle shoal. Most SEM metals have a significant linear positive correlation with the total metals, especially for Cd, Zn, and Pb, which were easily extracted by 1M HCl compared with Cr and Ni. According to the toxicity threshold value of 1.7mol center dot g(-1) for the difference of SEM-AVS, a toxic effect is expected at sites 1, 2, and 4 in spring and at sites 4, 6, and 7 in winter, which also indicates a relatively obvious seasonal variation in heavy metal bioavailability. However, comparisons between the total heavy metal concentrations in winter sediments with the sediment quality guidelines of ERLs/ERMs and TELs/PELs showed that adverse biological effects may occasionally occur at sites 2, 4, 6, and 7. Therefore, SEM/AVS prediction in conjunction with sediment quality guidelines can give a more reliable evaluation of the bioavailability of heavy metal in sediments.
原文出处: 查看原文
WOS记录号: WOS:000328533100008
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10550
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Seasonal Variation of Acid Volatile Sulfide and Simultaneously Extracted Metals in Sediment Cores from the Pearl River Estuary.pdf(650KB)----开放获取View Download

Recommended Citation:
Yang, YQ; Zhang, L; Chen, FR; Kang, ML; Wu, SJ; Liu, JS.Seasonal Variation of Acid Volatile Sulfide and Simultaneously Extracted Metals in Sediment Cores from the Pearl River Estuary,SOIL & SEDIMENT CONTAMINATION,2014,23(4):480-496
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Yang, YQ]'s Articles
[Zhang, L]'s Articles
[Chen, FR]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Yang, YQ]‘s Articles
[Zhang, L]‘s Articles
[Chen, FR]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: Seasonal Variation of Acid Volatile Sulfide and Simultaneously Extracted Metals in Sediment Cores from the Pearl River Estuary.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院南海海洋研究所 - Feedback
Powered by CSpace