|
|||||
|
|
| 湘江中下游农田土壤和蔬菜的重金属污染 | |
| 引用本文： | 王莉霞,郭朝晖,肖细元,陈同斌,廖晓勇,宋杰,武斌.湘江中下游农田土壤和蔬菜的重金属污染[J].地理学报(英文版),2008,18(3):353-362. |
| 作者姓名： | 王莉霞 郭朝晖 肖细元 陈同斌 廖晓勇 宋杰 武斌 |
| 作者单位： | 王莉霞,武斌,WANG Lixia,WU Bin(Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China);郭朝晖,宋杰,GUO Zhaohui,SONG Jie(Institute of Environmental Engineering, School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China);肖细元,XIAO Xiyuan(Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;Institute of Environmental Engineering, School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China);陈同斌,廖晓勇,CHEN Tongbin,LIAO Xiaoyong(Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China) |
| 摘 要： | A total of 219 agricultural soil and 48 vegetable samples were collected from the midstream and downstream of the Xiangjiang River（the Hengyang-Changsha section）in Hunan Province.The accumulation characteristics,spatial distribution and potential risk of heavy metals in the agricultural soils and vegetables were depicted.There are higher accumulations of heavy metals such as As,Cd,Cu,Ni,Pb and Zn in agricultural soils,and the contents of Cd（2.44 mg kg^-1 ）,Pb（65.00 mg kg^-1 ）and Zn（144.13 mg kg^-1 ）are 7.97,3.69 and 1.63 times the corresponding background contents in soils of Hunan Province,respectively. 13.2%of As,68.5%of Cd,2.7%of Cu,2.7%of Ni,8.7%of Pb and 15.1%of Zn in soil samples from the investigated sites exceeded the maximum allowable heavy metal contents in the China Environmental Quality Standard for Soils（GB15618-1995,Grade Ⅱ）.The pollution characteristics of multi-metals in soils are mainly due to Cd.The contents of As,Cd,Cu,Pb and Zn in vegetable soils are significantly higher than the contents in paddy soils.95.8%, 68.8%,10.4%and 95.8%of vegetable samples exceeded the Maximum Levels of Contaminants in Foods（GB2762-2005）for As,Cd,Ni and Pb concentrations,respectively.There are significantly positive correlations between the concentrations of Cd,Pb and Zn in vegetables and the concentrations in the corresponding vegetable soils（p〈0.01）.It is very necessary to focus on the potential risk of heavy metals for food safety and human health in agricultural soils and vegetables in the midstream and downstream of the Xiangjiang River,Hunan Province of China. |
| 关 键 词： | 湘江 中下游 农田 土壤 蔬菜 重金属污染 |
| 收稿时间： | 9 August 2007 |
Heavy metal pollution of soils and vegetables in the midstream and downstream of the Xiangjiang River,Hunan Province |
|
| Lixia?Wang,Zhaohui?Guo,Xiyuan?Xiao,Tongbin?Chen,Xiaoyong?Liao,Jie?Song,Bin?Wu.Heavy metal pollution of soils and vegetables in the midstream and downstream of the Xiangjiang River,Hunan Province[J].Journal of Geographical Sciences,2008,18(3):353-362. | |
| Authors: | Lixia Wang Zhaohui Guo Xiyuan Xiao Tongbin Chen Xiaoyong Liao Jie Song Bin Wu |
| Institution: | 1. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China 2. Institute of Environmental Engineering, School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China 3. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;Institute of Environmental Engineering, School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China 4. Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China |
| Abstract: | A total of 219 agricultural soil and 48 vegetable samples were collected from the midstream and downstream of the Xiangjiang River (the Hengyang-Changsha section) in Hunan Province. The accumulation characteristics, spatial distribution and potential risk of heavy metals in the agricultural soils and vegetables were depicted. There are higher accu- mulations of heavy metals such as As, Cd, Cu, Ni, Pb and Zn in agricultural soils, and the contents of Cd (2.44 mg kg-1), Pb (65.00 mg kg-1) and Zn (144.13 mg kg-1) are 7.97, 3.69 and 1.63 times the corresponding background contents in soils of Hunan Province, respectively. 13.2% of As, 68.5% of Cd, 2.7% of Cu, 2.7% of Ni, 8.7% of Pb and 15.1% of Zn in soil sam- ples from the investigated sites exceeded the maximum allowable heavy metal contents inthe China Environmental Quality Standard for Soils (GB15618-1995, Grade II). The pollution characteristics of multi-metals in soils are mainly due to Cd. The contents of As, Cd, Cu, Pb and Zn in vegetable soils are significantly higher than the contents in paddy soils. 95.8%, 68.8%, 10.4% and 95.8% of vegetable samples exceeded the Maximum Levels of Contami- nants in Foods (GB2762-2005) for As, Cd, Ni and Pb concentrations, respectively. There are significantly positive correlations between the concentrations of Cd, Pb and Zn in vegetables and the concentrations in the corresponding vegetable soils (p<0.01). It is very necessary to focus on the potential risk of heavy metals for food safety and human health in agricultural soils and vegetables in the midstream and downstream of the Xiangjiang River, Hunan Province of China. |
| Keywords: | Xiangjiang River agricultural soil vegetable heavy metal pollution |
| 本文献已被 维普 万方数据 SpringerLink 等数据库收录！ | |
| 点击此处可从《地理学报(英文版)》浏览原始摘要信息 | |
| 点击此处可从《地理学报(英文版)》下载免费的PDF全文 | |