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题名: Accumulation, fractionation, and risk assessment of mercury and arsenic in the soil-wheat system from the wastewater-irrigated soil in Baiyin, northwest China
作者: Zhang, Q; Wang, SL; Nan, ZR; Li, YP; Zang, F
收录类别: SCIE ; PUBMED
出版日期: 2018-05
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷号: 25, 页码:14856-14867
出版者: SPRINGER
出版地: HEIDELBERG
英文摘要: Wastewater irrigation can increase metal concentrations in soil and wheat, thereby posing metal-associated health risk via food ingestion. We investigated levels of mercury (Hg) and arsenic (As) in roots, husks, stems, leaves, and grains of wheat and their fractionations in farmland soil from Baiyin City, an industrial and mining city, northwest China. Results show that the mean concentrations of Hg in soils from Dongdagou and Xidagou stream in Baiyin were 8.5 times and three times higher than local soil background values, respectively. Those of As were 4.5 times and 1.6 times higher, respectively. Most Hg and As were mainly accumulated in wheat leaves. The spatial distributions of As in soils and grains exhibit a very similar pattern, which suggest that As pollution in soils might be predicted by its level in wheat grains. Residual fractions for Hg (RES-Hg) and As (RES-As) are the highest compared to other fractions, indicating weak mobility of Hg and As in soil. The crop oral intake hazard quotients of both Hg and As for children were approximately two times higher than that for adults, indicating that children have higher exposure risks to Hg- and As-contaminated wheat. The crop oral intake was the main route of exposure causing non-carcinogenic and carcinogenic risk for local residents.
关键词: Mercury ; Arsenic ; Wheat ; Wastewater ; Soil ; Risk assessment
作者部门: [Zhang, Qian ; Wang, Shengli ; Nan, Zhongren ; Li, Yepu ; Zang, Fei] Lanzhou Univ, Coll Earth & Environm Sci, Gansu Key Lab Environm Pollut Predict & Control, Tianshui South Rd 222, Lanzhou 730000, Gansu, Peoples R China ; [Zhang, Qian ; Wang, Shengli ; Nan, Zhongren ; Li, Yepu ; Zang, Fei] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Tianshui South Rd 222, Lanzhou 730000, Gansu, Peoples R China
通讯作者: Wang, SL (reprint author), Lanzhou Univ, Coll Earth & Environm Sci, Gansu Key Lab Environm Pollut Predict & Control, Tianshui South Rd 222, Lanzhou 730000, Gansu, Peoples R China. ; Wang, SL (reprint author), Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, Minist Educ, Tianshui South Rd 222, Lanzhou 730000, Gansu, Peoples R China.
学科分类: Environmental Sciences & Ecology
文章类型: Article
所属项目编号: Fundamental Research Funds for the Central Universities in Lanzhou University [lzujbky-2017-222, lzujbky-2017-sp31] ; Gansu Natural Science Fund, China [1606RJZA106]
所属项目名称: 中央高校基本科研业务费专项资金 ; 甘肃省自然科学基金计划
项目资助者: LZU ; GSSTD
语种: 英语
DOI: 10.1007/s11356-018-1641-y
ISSN号: 0944-1344
WOS记录号: WOS:000433495500053
PM记录号: 29546511
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内容类型: 期刊论文
URI标识: http://ir.lzu.edu.cn/handle/262010/196028
Appears in Collections:资源环境学院_期刊论文

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Recommended Citation:
Zhang, Q,Wang, SL,Nan, ZR,et al. Accumulation, fractionation, and risk assessment of mercury and arsenic in the soil-wheat system from the wastewater-irrigated soil in Baiyin, northwest China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25:14856-14867.
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