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题名:
Spatial characteristics of cadmium in topsoils in a typical e-waste recycling area in southeast China and its potential threat to shallow groundwater
作者: Wu, Chunfa1,2; Luo, Yongming2,3; Deng, Shaopo2; Teng, Ying2; Song, Jing2
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
ISSN号: 0048-9697
出版日期: 2014-02-15
卷号: 472, 页码:556-561
关键词: E-waste ; Informal recycling ; Cadmium ; Soil acidification ; Topsoils ; Shallow groundwater
学科分类: Environmental Sciences
产权排序: [Wu, Chunfa] Nanjing Univ Informat Sci & Technol, Dept Agr Resources & Environm, Nanjing 210044, Jiangsu, Peoples R China; [Wu, Chunfa; Luo, Yongming; Deng, Shaopo; Teng, Ying; Song, Jing] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
通讯作者: Wu, CF (reprint author), Nanjing Univ Informat Sci & Technol, Dept Agr Resources & Environm, 219 Ningliu Rd, Nanjing 210044, Jiangsu, Peoples R China. wchf1680@sina.com
中文摘要: Informal electrical and electronic waste (e-waste) recycling often creates secondary sources of cadmium (Cd) pollution. To characterize the total Cd concentration (Cd-total) in topsoil and evaluate the threat of Cd in topsoils to shallow groundwater, 187 topsoil samples and 12 shallow groundwater samples were collected in a typical e-waste recycling area in southeast China. Soil organic matter content, soil pH and Cd-total in topsoil, pH and dissolved Cd concentration in shallow groundwater were measured. Cd-total in the topsoils showed an inverse distribution trend with soil pH in that high Cd concentrations (and low pH values) were found in the surrounding area of the metal recycling industrial park where there were many family-operated e-waste recycling facilities before the industrial park was established and with low concentrations (and high pH values) in other areas, and they had similar spatial correlation structures. Cd accumulation and acidification were synchronous in topsoils, and soil pH was significantly correlated with Cd-total in topsoils with low to moderate negative correlation coefficient (r = -024), indicating that both of them maybe correlated with informal recycling. The shallow groundwater in the surrounding area of the metal recycling industrial park was seriously contaminated by Cd, and topsoil Cd accumulation and acidification in the surrounding area of e-waste recycling sites significantly increase the risk of shallow groundwater contaminated by Cd. Action is urgently required to control Cd accumulation and acidification by improving the recycling operations of e-wastes in order to reduce the risk of Cd leaching from topsoils and shallow groundwater contamination. (C) 2013 Published by Elsevier B.V.
英文摘要: Informal electrical and electronic waste (e-waste) recycling often creates secondary sources of cadmium (Cd) pollution. To characterize the total Cd concentration (Cd-total) in topsoil and evaluate the threat of Cd in topsoils to shallow groundwater, 187 topsoil samples and 12 shallow groundwater samples were collected in a typical e-waste recycling area in southeast China. Soil organic matter content, soil pH and Cd-total in topsoil, pH and dissolved Cd concentration in shallow groundwater were measured. Cd-total in the topsoils showed an inverse distribution trend with soil pH in that high Cd concentrations (and low pH values) were found in the surrounding area of the metal recycling industrial park where there were many family-operated e-waste recycling facilities before the industrial park was established and with low concentrations (and high pH values) in other areas, and they had similar spatial correlation structures. Cd accumulation and acidification were synchronous in topsoils, and soil pH was significantly correlated with Cd-total in topsoils with low to moderate negative correlation coefficient (r = -024), indicating that both of them maybe correlated with informal recycling. The shallow groundwater in the surrounding area of the metal recycling industrial park was seriously contaminated by Cd, and topsoil Cd accumulation and acidification in the surrounding area of e-waste recycling sites significantly increase the risk of shallow groundwater contaminated by Cd. Action is urgently required to control Cd accumulation and acidification by improving the recycling operations of e-wastes in order to reduce the risk of Cd leaching from topsoils and shallow groundwater contamination. (C) 2013 Published by Elsevier B.V.
研究领域[WOS]: Environmental Sciences & Ecology
关键词[WOS]: ELECTRONIC WASTE ; HEAVY-METALS ; TAIZHOU AREA ; SOIL ; CONTAMINATION ; PREDICTION ; SITES ; GUIYU ; ZINC ; ZN
文章类型: Article
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000331916100063
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.yic.ac.cn/handle/133337/6904
Appears in Collections:中科院海岸带环境过程与生态修复重点实验室_期刊论文

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作者单位: 1.Nanjing Univ Informat Sci & Technol, Dept Agr Resources & Environm, Nanjing 210044, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China

Recommended Citation:
Wu, Chunfa,Luo, Yongming,Deng, Shaopo,et al. Spatial characteristics of cadmium in topsoils in a typical e-waste recycling area in southeast China and its potential threat to shallow groundwater[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2014,472:556-561.
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