Heavy metals in soils of Hechuan County in the upper Yangtze (SW China): Comparative pollution assessment using multiple indices with high-spatial-resolution sampling
文献类型：期刊论文
| 作者 | Ni, Maofei1,2; Mao, Rong1; Jia, Zhongmin3,4; Dong, Ruozhu1 ; Li, Siyue1
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| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2018-02-01 |
| 卷号 | 148页码:644-651 |
| 关键词 | Heavy metals Risk assessment Source identification Soil pollution Yangtze Basin |
| ISSN号 | 0147-6513 |
| DOI | 10.1016/j.ecoenv.2017.11.009 |
| 英文摘要 | In order to assess heavy metals (HMs) in soils of the upper Yangtze Basin, a very high-spatial-resolution sampling (582 soil samples) was conducted from Hechuan County, an important agricultural practice area in the Southwest China. Multiple indices including geoaccumulation index (I-geo), enrichment factor (EF), sediment pollution index (SPI) and risk index (RI), as well as multivariate statistics were employed for pollution assessment and source identification of HMs in soils. Our results demonstrated that the averages of eight HMs decreased in the following order: Zn (82.8 +/- 15.9) > Cr (71.6 +/- 12.2) > Ni (32.1 9.89) > Pb (27.6 +/- 13.8) > Cu (25.9 +/- 11.8) > As (5.48 +/- 3.42) > Cd (0.30 +/- 0.077) > Hg (0.082 +/- 0.092). Averages of HMs except Cd were lower than threshold value of Environmental Quality Standard for Soils, while 43% of total samples had Cd concentration exceeding the national standard, 1% of samples for Hg and 5% samples for Ni, moreover, Cd and Hg averages were much higher than their background levels. I-geo and EF indicated that their levels decreased as follows: Cd > Hg > Zn > Pb > Ni > Cu > Cr > As, with moderate enrichments of Cd and Hg. RI indicated that 61.7% of all samples showed moderate risk, while 6.5% of samples with greater than considerable risk due to human activities should be paid more attention. Multivariate analysis showed lithogenic source of Cu, Cr, Ni and Zn, while Cd and Hg were largely contributed by anthropogenic activities such as agricultural practices. Our study would be helpful for improving soil environmental quality in SW, China, as well as supplying modern approaches for other areas with soil HM pollution. |
| 资助项目 | Chinese Academy of Sciences[R53A362Z10] ; National Natural Science Foundation of China (NSFC)[31670473] |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:000429892700075 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/6356]  |
| 专题 | 生态过程与重建研究中心 |
| 通讯作者 | Li, Siyue |
| 作者单位 | 1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Southwest Univ, Coll Life Sci, Key Lab Ecoenvironm, Minist Educ,Gorges Reservoir Reg 3, Chongqing 400715, Peoples R China 4.Chongqing Bur Geol & Minerals Explorat, Southeast Sichuan Geol Grp, Chongqing 400038, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ni, Maofei,Mao, Rong,Jia, Zhongmin,et al. Heavy metals in soils of Hechuan County in the upper Yangtze (SW China): Comparative pollution assessment using multiple indices with high-spatial-resolution sampling[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,148:644-651. |
| APA | Ni, Maofei,Mao, Rong,Jia, Zhongmin,Dong, Ruozhu,&Li, Siyue.(2018).Heavy metals in soils of Hechuan County in the upper Yangtze (SW China): Comparative pollution assessment using multiple indices with high-spatial-resolution sampling.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,148,644-651. |
| MLA | Ni, Maofei,et al."Heavy metals in soils of Hechuan County in the upper Yangtze (SW China): Comparative pollution assessment using multiple indices with high-spatial-resolution sampling".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 148(2018):644-651. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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