Exposure of children to light rare earth elements through ingestion of various size fractions of road dust in REEs mining areas
文献类型：期刊论文
| 作者 | Li, Zhiyi1,2; Liang, Tao1,2 ; Li, Kexin1,2; Wang, Peng1,2
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-11-15 |
| 卷号 | 743页码:7 |
| 关键词 | Children's health LREEs Road dust Particle size Ingestion exposure |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.140432 |
| 通讯作者 | Wang, Peng(wangpeng@igsnrr.ac.cn) |
| 英文摘要 | Road dust, contains enhanced amounts of light rare earth elements (LREEs) in rare earth industrial cities, which poses a serious health risk particularly to children. Road dust samples were collected from Baotou, the largest rare earth industrial city in northern China, and sieved into six size fractions. The pollution characteristics of the LREEs (La, Ce, Pr, and Nd) in the size-fractioned road dust were investigated, and the LREEs exposure dose of children via ingestion of road dust was evaluated. The results showed that the finer size fractions of road dust had enhanced REEs concentrations, and the pollution level was found to be elevated with a decrease in particle size. Ce was the most abundant element, with concentrations ranging from 105 to 5420 mg.kg(-1), followed by La, Nd and Pr. REEs mining activities had a major contribution to the LREEs in the road dust and crust, among which coal combustion emissions could also be a potential source. The average daily intake dose of LREEs through ingest ion of road dust by children ranged from 4.27 x 10(-4) to 2.63 x 10(-2) mg.kg(-1). day(-1) and was significantly affected by particle size. Road dust exposure is notably affected by particle size, and there is a serious risk to children of LREEs uptake from fine particles (<100 mu m) of road dust. (C) 2020 Published by Elsevier B.V. |
| WOS关键词 | RISK-ASSESSMENT ; BAYAN OBO ; SOIL INGESTION ; PARTICLE-SIZE ; STREET DUST ; METALS ; CONTAMINATION ; POLLUTION ; REGION |
| 资助项目 | National Natural Science Foundation of China[41571473] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000573543300013 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/157009]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Peng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, 11A Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhiyi,Liang, Tao,Li, Kexin,et al. Exposure of children to light rare earth elements through ingestion of various size fractions of road dust in REEs mining areas[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,743:7. |
| APA | Li, Zhiyi,Liang, Tao,Li, Kexin,&Wang, Peng.(2020).Exposure of children to light rare earth elements through ingestion of various size fractions of road dust in REEs mining areas.SCIENCE OF THE TOTAL ENVIRONMENT,743,7. |
| MLA | Li, Zhiyi,et al."Exposure of children to light rare earth elements through ingestion of various size fractions of road dust in REEs mining areas".SCIENCE OF THE TOTAL ENVIRONMENT 743(2020):7. |
入库方式： OAI收割
来源：地理科学与资源研究所
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