Spatial characteristics of cadmium in topsoils in a typical e-waste recycling area in southeast China and its potential threat to shallow groundwater
Wu, Chunfa1,2; Luo, Yongming2,3; Deng, Shaopo2; Teng, Ying2; Song, Jing2
2014-02-15
发表期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
卷号472页码:556-561
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
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.; 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.
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
关键词E-waste Informal Recycling Cadmium Soil Acidification Topsoils Shallow Groundwater
学科领域Environmental Sciences
项目资助者Chinese Academy of Sciences; National Natural Science Foundation of China [41001315]; Key Laboratory of Soil Environment and Pollution Remediation
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收录类别SCI
关键词[WOS]ELECTRONIC WASTE ; HEAVY-METALS ; TAIZHOU AREA ; SOIL ; CONTAMINATION ; PREDICTION ; SITES ; GUIYU ; ZINC ; ZN
文章类型Article
语种英语
资助项目中国科学院海岸带环境过程与生态修复重点实验室
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:000331916100063
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/6904
专题中科院海岸带环境过程与生态修复重点实验室
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
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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.
APA Wu, Chunfa,Luo, Yongming,Deng, Shaopo,Teng, Ying,&Song, Jing.(2014).Spatial characteristics of cadmium in topsoils in a typical e-waste recycling area in southeast China and its potential threat to shallow groundwater.SCIENCE OF THE TOTAL ENVIRONMENT,472,556-561.
MLA Wu, Chunfa,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".SCIENCE OF THE TOTAL ENVIRONMENT 472(2014):556-561.
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