摘要
目的:了解土壤质量现状,为土壤现况分析提供参考。方法:采用国家土壤环境质量二级标准为重金属限值,并利用单因子污染指数法和内梅罗综合污染指数对土壤重金属的污染程度进行评价。结果:除了铅和总铬之外,各县农田土壤均有不同程度的重金属超标情况。单因子指数中总汞Pi=1.13,表明土壤受到轻度污染。内梅罗综合污染指数表明部分地区土壤已处于警戒或轻度污染状态。结论:农田土壤存在部分重金属污染,空间分布不均,主要为总汞污染,以丹寨县为最重,已处于轻度污染水平。
Objective:Analysis and evaluation of the results,understand the quality of the soil in our state and to provides a reference for the analysis of the current status of the soil in our state.Methods:The two level of environmental standard for soils is the limit value of heavy metals,the pollution degree of soil heavy metals was evaluated by using the using single factor pollution index and Nemero comprehensive pollution index of soil to analyze and assess the results.Results:In addition to lead and total chromium,the level of heavy metals exceeded the standard of farmland in all counties.The single factor pollution index of total mercury Pi=1.13 indicates that the soil is slightly polluted. Nemero comprehensive pollution index indicates that some areas of soil are in a state of alert or light pollution.Conclusion:There are some heavy metal pollution in farmland soil in our state. The spatial distribution of the soil is uneven, and the main pollution of the total mercury is prominent, which is the heaviest in Danzhai county and is at the level of mild pollution.
作者
罗优
陆宇超
杨兰
杨小雪
LUO You;LU Yu chao;YANG Lan;YANG Xiao-xue(Qiandongnan Prefecture Centre for Disease Control and Prevention,Guizhou Kaili 556000,China)
出处
《微量元素与健康研究》
CAS
2019年第4期58-60,共3页
Studies of Trace Elements and Health
关键词
黔东南州
土壤重金属
污染评价
Qiandongnan prefecture
Heavy metal in soil
Pollution assessment
