平陆植烟土壤重金属含量分布与安全性评价研究  

Evaluation on distribution and safety of soil heavy metal contents in the tobacco production area in Pinglu

作　　者：陶金江[1] 赵铭钦[1] 李慧[1] 许跃奇[1] 姜慧娟[1] 

机构地区：[1]河南农业大学烟草学院,河南郑州450002

出　　处：《河南农业大学学报》2014年第1期11-15,共5页Journal of Henan Agricultural University

基　　金：中国烟草总公司山西省公司重点科技攻关项目(SY201201)

摘　　要：以山西省运城市平陆县代表性烟叶产区共68个取样点的土壤为试验材料,对该植烟区的土壤重金属含量进行分析评价,结果表明,重金属Cd,Pb,Cr,Hg,As含量平均值均未超过土壤环境质量2级标准(GB 15618—1995),但土壤Pb,Hg和As均值高于山西省土壤背景值.从各乡镇的综合污染指数看,平陆县三门镇的综合污染指数大于2,其他7个乡镇的综合污染指数都大于1,而小于2.土壤重金属单因子污染指数值大小顺序为Hg>As>Pb>Cd>Cr.植烟区内土壤Hg的单因子污染指数较高,产生极高的贡献率,使得综合污染指数平均值达1.60.Hg是平陆县植烟区土壤中需要优先控制的重金属.Taking 68 soil samples as materials from tobacco production areas in Pinglu County , Yuncheng City, Shanxi Province, soil heavy metal contents of this area was investigated and analyzed. The results showed that： concentrations of five heavy metals（ Cd, Pb, Cr, Hg and As） detected in the studied soils did not exceed the secondary standard of national standard for soil environment quality （GB 15618--1995） , but the contents of Pb, Hg and As were higher than the background values of Shanxi soil. Comprehensive pollution index of soil heavy metal of different towns showed that the indices of Sanmen Town were lower than two, the indices of other seven towns were lower than two but higher than one. The order of the mean value of single-factor indices of soil metals was Hg 〉 As 〉 Pb 〉 Cd 〉 Cr. Comprehensive pollution index of soil heavy metal was 1.60. As the high value of single-factor index of Hg made the major contribution to the high va!ue of comprehensive pollution index, Hg was the priority to be monitored and controlled in tobacco production areas of Pinglu County.

关 键 词：平陆 植烟土壤 重金属 污染指数 安全性评价 

分 类 号：S572[农业科学—烟草工业]