摘要
对采集自我国大宗露天蔬菜产区41个试验站59个采样点共133份土壤样品,进行Cd、Pb、Cr、Zn、Cu、Hg、As等7种重金属含量污染风险评价。结果表明:所有采样点土壤Cd含量平均值为0.2 mg·kg^(-1),其中有14个采样点的土壤样品Cd含量高于风险筛选值,占总采样点的23.7%;Cd污染超标严重采样点主要分布在华中长沙、华南南宁、西南攀枝花等地,超标土壤的Cd含量最高值为1.3 mg·kg^(-1)。除云南昆明某地区1个采样点土壤Cu含量以及北京海淀某地区1个采样点土壤Hg含量高出风险筛选值外,其余采样点土壤的Cu、Hg以及Pb、Cr、Zn、As含量均处在安全范围内。我国露天菜地的Cd污染值得重点关注。
This paper conducted Cd,Pb,Cr,Zn,Cu,Hg,As,etc.7 heavy metal content pollution risk assessment of 133 soil samples collected from 41 experimental sites and 59 sampling points in bulk openair vegetable production areas of China.The results showed that the soil average value of Cd content from all sample sites was 0.2 mg·kg^(-1),among them soil sample Cd contents of 14 sampling points was higher than the risk screening value,accounting for 23.7%of the total sampling points.The sampling points with serious Cd pollution exceeding standard were mainly distributed in central China Changsha,southern China Nanning and southwestern China Pan Zhihua,etc.The highest value of soil Cd content exceed standard was 1.3 mg·kg^(-1).Except one sampling site in Kunming Yunnan its soil Cu content and one sampling site in Haidian Beijing its soil Hg content were higher than risk screening value,the soil Cu and Hg and Pb,Cr,Zn,As contents in the rest sampling sites were all within safe limits.Cd pollution in bulk open-air vegetable production areas in China deserves special attention.
作者
仲可成
王倩瑜
贾琪源
李建民
罗春丽
徐可馨
黄婷
李舒清
邹建文
陈亚华
ZHONG Kecheng;WANG Qianyu;JIA Qiyuan;LI Jianmin;LUO Chunli;XU Kexin;HUANG Ting;LI Shuqing;ZOU Jianwen;CHEN Yahua(College of Life Sciences,Nanjing Agricultural University,Nanjing 210095,Jiangsu,China;College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,Jiangsu,China)
出处
《中国蔬菜》
北大核心
2021年第9期33-40,共8页
China Vegetables
基金
财政部和农业农村部:国家现代农业产业技术体系资助项目。
