|
| Characteristics and Assessment of Heavy Metal Pollution in Paddy Field and Arid Land in Jianhe County |
|
Received:February 23, 2019
Revised:March 12, 2019
Accepted:March 12, 2019
Published Online:June 17, 2019
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2019.07.016 |
| KeyWord:heavy metals; modified grey clustering; health risk assessment; non-carcinogenic risk; hand-mouth pathway |
| Author | Institution |
| Zhang Song |
贵州师范大学省山地环境信息系统与生态环境保护重点实验室 |
| Wu xianliang |
贵州师范大学省山地环境信息系统与生态环境保护重点实验室 |
| Wang Xingfu |
贵州师范大学 喀斯特研究院 |
| Qin Fanxin |
贵州师范大学省山地环境信息系统与生态环境保护重点实验室 |
| ZHANG Zhen-ming |
贵州科学院生物研究所 |
| Huang Xianfei |
贵州师范大学省山地环境信息系统与生态环境保护重点实验室 |
|
| Hits: 1938 |
| Download times: 1853 |
| Abstract: |
| Effects of heavy metals in soil of paddy field and arid land in Jianhe County, Guizhou Province on human health were studied. The measured values of heavy metals in two different type soils were compared with background values of heavy metals in Guizhou Province. Pollution of heavy metals in soils from two different type lands was evaluated by modified grey clustering method. Impacts of heavy metals in soils from different type lands on health of local population were explored by health risk assessment. The results show that heavy metals in paddy field and arid land soils exceed the background values of soil in Guizhou Province, and the most severe ones are Pb and As. Compared with national standard GB 15618—1995, the heavy metals in paddy soils meet the limits of Grade 1, and that in arid soils meet Grade 2. Heavy metals in soils of paddy field and arid land are more dangerous to children. Total non-carcinogenic risk of the former is As>Cr>Pb>Cd>Ni>Zn>Cu, and the latter is As>Cr>Pb>Ni>Cu>Zn>Cd. The results from improved grey clustering method show that there is no obvious pollution of studied heavy metals in paddy field and heavy metal pollution in arid land is mild. Contaminated hand-mouth pathway is the most important way to expose heavy metals in soil. Children""s health risk caused by heavy metals intake in soil is higher than adults, so more attention should be paid to children. |
| Close |