| 广州石化工业区周边农业土壤重金属污染现状与潜在生态风险评价 |
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| 引用本文： | 李军辉,卢瑛,张朝,邓香连,连槿.广州石化工业区周边农业土壤重金属污染现状与潜在生态风险评价[J].土壤通报,2011(5). |
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| 作者姓名： | 李军辉 卢瑛 张朝 邓香连 连槿 |
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| 作者单位： | 华南农业大学资源环境学院;广东省广州市农业标准与监测中心; |
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| 基金项目： | 广东省科技计划项目(2007A020100002-7)资助 |
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| 摘 要： | 采集广州石化工业区周边包括菜地、果园和林地表层土壤(0~20 cm),分析土壤Zn、Cu、Pb、Cd、Hg和As的含量,利用污染指数和潜在生态风险指数评价了土壤污染状况和潜在生态风险。结果表明,土壤Zn、Cu、Pb、Cd、Hg和As的含量分别为158.6 mg kg-1(19.6~386.1 mg kg-1),33.6 mg kg-1(3.6~294.3 mg kg-1),67.1 mg kg-1(25.4~182.1 mg kg-1),0.22 mg kg-1(0.02~1.00 mg kg-1),0.61 mg kg-1(0.03~2.40 mg kg-1)和4.40 mg kg-1(0.01~15.50 mg kg-1)。参照中国土壤环境质量二级标准,土壤受到了不同程度的Hg、Zn、Cu和Cd的污染,其中Hg污染最为严重;土壤重金属元素的潜在生态危害性为Hg>Cd>Cu>Pb>Zn>As,其中Hg和Cd是主要的生态风险的贡献因子。不同土地利用方式下土壤污染程度和潜在生态风险均为菜地>果园>林地。
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| 关 键 词： | 重金属 农业土壤 潜在生态风险 石化工业区 广州 |
The Status Quo and Potential Ecological Risks' Assesment of Heavy Metals in Agricultural Soils near a Petrochemical Complex in Guangzhou |
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| LI Jun-hui ,LU Ying ,ZHANG Chao ,DENG Xiang-lian ,LIAN Jin.The Status Quo and Potential Ecological Risks' Assesment of Heavy Metals in Agricultural Soils near a Petrochemical Complex in Guangzhou[J].Chinese Journal of Soil Science,2011(5). |
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| Authors: | LI Jun-hui LU Ying ZHANG Chao DENG Xiang-lian LIAN Jin |
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| Institution: | LI Jun-hui 1,LU Ying 1,ZHANG Chao 1,DENG Xiang-lian 2,LIAN Jin 2(1.College of Natural Resources and Environment,South China Agricultural University,Guangzhou 510642,China,2.Guangzhou Agricultural Standard and Supervisory Center,Guangzhou 510315,China) |
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| Abstract: | Surface soils(0-20 cm) were collected from vegetable field,orchard,and woodland around a petrochemical complex in Guangzhou,and the concentrations of Zn,Cu,Pb,Cd,Hg and As in soils were determined,and soil pollution status and potential ecological risk were assessed according to soil pollution index and Hakanson's ecological risk index.The results indicated that the concentrations of Zn,Cu,Pb,Cd,Hg and As in soils were 158.6 mg kg-1(19.6-386.1 mg kg-1),33.6 mg kg(3.6-294.3 mg kg-1),67.1 mg kg-1(25.4-182.1 m... |
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| Keywords: | Heavy metals Agricultural soils Potential ecological risk Petrochemical complex Guangzhou |
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