黔东南州农田土壤重金属污染的评价
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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.
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.
引文
[1] 王莉,康树静,王浩.土壤重金属污染[J].科技信息,2008,(19):53-53.
[2] 郑国璋.农业土壤重金属污染研究的理论与实践[M].北京:中国环境科学出版社,2007.
[3] 环境保护部和国土资源部.全国土壤污染状况调查公报[A].2014.
[4] 中国农田土壤重金属污染的修复迫在眉睫[N].科技导报,2014,7,8.
[5] Manta D S,Angelone M,Bellanca A,et al.Heavy metals in urban soils:A case study from the city of Palermo(Sicily),Italy[J].The Science of the Total Environment,2002,300(1-3):229-243.
[6] 洪曾纯,郭永玲,王果.福建省蔬菜产地土壤汞污染状况及其影响因素[J].农业资源与环境学报,2015,32(2):198-203.
[7] 罗涛,黄东风,何盈,等.菜地重金属污染的标准值分析与治理对策[J].热带作物学报,2004,28(2):45-49.
[8] 郝春明,李琼.浙江平湖农田土壤安全质量评价[J].能源环境保护,2009,23(1):52-56.
[2] 郑国璋.农业土壤重金属污染研究的理论与实践[M].北京:中国环境科学出版社,2007.
[3] 环境保护部和国土资源部.全国土壤污染状况调查公报[A].2014.
[4] 中国农田土壤重金属污染的修复迫在眉睫[N].科技导报,2014,7,8.
[5] Manta D S,Angelone M,Bellanca A,et al.Heavy metals in urban soils:A case study from the city of Palermo(Sicily),Italy[J].The Science of the Total Environment,2002,300(1-3):229-243.
[6] 洪曾纯,郭永玲,王果.福建省蔬菜产地土壤汞污染状况及其影响因素[J].农业资源与环境学报,2015,32(2):198-203.
[7] 罗涛,黄东风,何盈,等.菜地重金属污染的标准值分析与治理对策[J].热带作物学报,2004,28(2):45-49.
[8] 郝春明,李琼.浙江平湖农田土壤安全质量评价[J].能源环境保护,2009,23(1):52-56.