重庆市煤矿区土壤重金属污染评价研析
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摘要
以重庆市的6个煤矿区为研究对象,采集工业广场、弃渣区、影响区等不同区域土壤样品17个,测定重金属Cr、Ni、Cu、Zn、Cd、Pb、As、Hg含量及p H值,采用单因子污染指数法、内梅罗综合污染指数法和潜在生态危害指数法评价土壤污染程度。结果表明:除影响区个别土样Cr、Ni、Cu、Zn、Cd有超标外,其余各土样均满足国家土壤环境质量相关标准,综合污染程度为清洁,潜在生态风险为轻度或中度。该成果可为研究区土壤重金属污染修复提供参考依据。
Take the six coal mining areas of Chongqing City as the research subjects. The heavy metal concentration of Cr,Ni,Cu,Zn,Cd,Pb,As,Hg and p H value in seventeen soil samples were determined from different areas of mine industry square,residues zone and influenced zone. The heavy metals pollution levels were evaluated by the single factor index,nemero index and ecological risk index. The results showed that except for Cr,Ni,Cu,Zn and Cd of some soil samples in influenced zone that exceed the standard,all other soil samples could meet related environmental quality standard for soils. The comprehensive pollution degree is clean,and the potential ecological risk is mild or moderate. The results can provide reference for the restoration of the heavy metal polluted soils in the research areas.
Take the six coal mining areas of Chongqing City as the research subjects. The heavy metal concentration of Cr,Ni,Cu,Zn,Cd,Pb,As,Hg and p H value in seventeen soil samples were determined from different areas of mine industry square,residues zone and influenced zone. The heavy metals pollution levels were evaluated by the single factor index,nemero index and ecological risk index. The results showed that except for Cr,Ni,Cu,Zn and Cd of some soil samples in influenced zone that exceed the standard,all other soil samples could meet related environmental quality standard for soils. The comprehensive pollution degree is clean,and the potential ecological risk is mild or moderate. The results can provide reference for the restoration of the heavy metal polluted soils in the research areas.
引文
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[9]徐争启,倪师军,庹先国.潜在生态危害指数法评价中重金属毒性系数计算[J].环境科学与技术,2008,31(2):112-115.
[10]高文文,白中科,余勤飞.煤矿工业场地土壤重金属污染评价[J].中国矿业,2015,24(8):59-64.
[11]贾亚琪,程志飞,刘品祯,等.煤矿区周边农田土壤重金属积累特征及生态风险评价[J].土壤通报,2016,47(2):474-479.
[12]庞文品,秦樊鑫,吕亚超,等.贵州兴仁煤矿区农田土壤重金属化学形态及风险评估[J].应用生态学报,2016,27(5):1468-1478.
[2]周川,刘东,郑杰炳,等.丘陵山区煤矿下游影响区土壤重金属污染生态风险评价[J].中国水土保持,2018(5):27-29.
[3]生态环境部,国家市场监督管理总局.土壤环境质量建设用地土壤污染风险管控标准(试行):GB 36600—2018[S].北京:中国环境出版集团,2018.
[4]生态环境部,国家市场监督管理总局.土壤环境质量农用地土壤污染风险管控标准(试行):GB 15618—2018[S].北京:中国环境出版集团,2018.
[5]黎飞.天府煤矿研究[D].重庆:重庆师范大学,2017.
[6]鲍丽然,龚媛媛,严明书,等.渝西经济区土壤地球化学基准值与背景值及元素分布特征[J].地球与环境,2015,43(1):31-40.
[7]皮宁宁,渠巍.三峡库区重庆段土壤重金属污染现状调查与评价[J].环境影响评价,2017,39(6):60-64.
[8]柴世伟,温琰茂,张亚雷,等.地积累指数法在土壤重金属污染评价中的应用[J].同济大学学报(自然科学版),2006,34(12):1657-1661.
[9]徐争启,倪师军,庹先国.潜在生态危害指数法评价中重金属毒性系数计算[J].环境科学与技术,2008,31(2):112-115.
[10]高文文,白中科,余勤飞.煤矿工业场地土壤重金属污染评价[J].中国矿业,2015,24(8):59-64.
[11]贾亚琪,程志飞,刘品祯,等.煤矿区周边农田土壤重金属积累特征及生态风险评价[J].土壤通报,2016,47(2):474-479.
[12]庞文品,秦樊鑫,吕亚超,等.贵州兴仁煤矿区农田土壤重金属化学形态及风险评估[J].应用生态学报,2016,27(5):1468-1478.