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| Risk Assessment of Heavy Metals in Soil and Health Risk Assessment of Vegetable Growing around Nickel-Molybdenum Mine Area |
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Received:March 06, 2019
Revised:March 11, 2019
Accepted:March 11, 2019
Published Online:June 17, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.07.017 |
| KeyWord:heavy metals; vegetables; potential ecological risk assessment; Health Risk Assessment Method; Bioconcentration Coefficient Method |
| Author | Institution |
| WU Jingfang |
贵州师范大学 贵州省山地环境信息系统与生态环境保护重点实验室 |
| JIANG Fan |
贵州师范大学 贵州省山地环境信息系统与生态环境保护重点实验室 |
| WEI Wei |
贵州师范大学 贵州省山地环境信息系统与生态环境保护重点实验室 |
| ZHOU Shihui |
贵州师范大学 贵州省山地环境信息系统与生态环境保护重点实验室 |
| HUANG Xian-fei |
贵州师范大学 贵州省山地环境信息系统与生态环境保护重点实验室 |
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| Abstract: |
| Soil samples and vegetables or rice samples around a Ni-Mo mining area were randomly collected to investigate contamination of heavy metals (Cd, Pb, Zn, Cu, Ni and Cr) in soil and influence of heavy metals content in vegetables and rice on residents. Heavy metal pollution in soil was evaluated by potential ecological risk assessment. Health risk assessment of various vegetables or rice was used to identify impact of heavy metals on human health. Accumulation of heavy metals in various vegetables or rice was investigated by Bioconcentration Coefficient Method. The results show that compared with background values of soil in Guizhou Province, contents of heavy metals in each sample point exceed the standard, of which Ni exceeds the standard to the largest extend. Trend of potential ecological hazards is Eri(Cd)＞Eri(Ni)＞Eri(Cu)＞Eri(Pb)＞Eri(Zn)＞Eri(Cr). The pollution of sample 17 is the most serious, reaching the level of strong ecological hazards. Vegetables and rice which could enrich Cd, Cr, Cu, Ni, Pb and Zn are not found, but chili and radish have strong absorption on Cd, while rice, radish and maize have strong absorption on Zn. Combined with total amount analysis of heavy metals and potential ecological risk assessment, attention should be paid to control and prevention of Ni and Cd pollution in the study area, and attention should be paid to the health risks caused by Cr and Pb. |
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