| 钢铁厂污水灌溉农田土壤重金属含量分析 |
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| 引用本文： | 王艳霞,张萍,陈映婕.钢铁厂污水灌溉农田土壤重金属含量分析[J].安徽农业科学,2012,40(15):8512-8514. |
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| 作者姓名： | 王艳霞 张萍 陈映婕 |
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| 作者单位： | 西南林业大学环境科学与工程学院,云南昆明,650224;西南林业大学环境科学与工程学院,云南昆明,650224;西南林业大学环境科学与工程学院,云南昆明,650224 |
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| 基金项目： | 西南林业大学生态学重点学科建设项目，西南林业大学面上基金 |
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| 摘 要： | 以污水灌溉的农田土壤为研究对象,着重分析该区土壤Cu、Zn、Cd、Pb 4种重金属含量。结果表明:除Zn外,调查区菜园土壤Cu、Cd、Pb含量均明显超过土壤环境质量二级标准。与菜园土壤相比,玉米地土壤仅有Cd含量超过二级标准。总的来看,灌溉区农田土壤未受到Zn污染,但明显存在Cu、Cd、Pb污染,尤其以Cd的污染最为严重,污染程度依次为CdCuPb。调查区所有样点的综合污染指数均大于3,污染等级为5级,达重污染程度,表明土壤与农作物受污染已相当严重。
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| 关 键 词： | 钢铁厂 污水灌溉 农田土壤 重金属含量 |
Analysis on Content of Heavy Metal in Farmland Soil Irrigated by Sewage from Iron-Steel Factory |
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| Institution: | WANG Yan-xia et al(Department of Environmental Science and Engineering,Southwest Forestry University,Kunming,Yunnan 650224) |
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| Abstract: | The contents of Cu,Zn,Cd and Pb were analyzed in farmland soil irrigated by sewage from iron-steel factory.The results showed that the average contents of Cu,Cd and Pb were higher than that of the second grade for heavy metals in Environmental Quality Standards for Soils.Compared with vegetable soils,only the content of Cd in corn soil was above the secondary standard of soil environmental quality.In general,the farmland soil was not polluted by Zn,but obviously polluted by Cu,Cd and Pb,especially by Cd.Their pollution degrees were decreasing in the order of Cd>Cu>Pb.The comprehensive pollution index was larger than 3,the level of pollutin was five,indicating that the soil and crops have been seriously pollluted. |
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| Keywords: | Iron-steel factory Sewage irrigation Farmland soil Content of heavy metals |
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