土壤重金属污染潜在风险评价
Global Geology(2011)
Abstract
以北方某河流河床及河流两侧农田中土壤为研究对象,采用地累积指数法和潜在生态危害指数法对土壤中Cd和Ni的污染状况进行风险评价。结果表明,废弃冶炼中心处河床及河流两侧土壤中Cd和Ni污染严重,均超过当地土壤背景值;河床中土壤重金属富集程度为Cd>Ni,其中Cd富集程度达5级,为重污染。以当地土壤背景值作为参比值进行评价,该河流处于重度的潜在生态危害程度,重金属的生态危害顺序为Cd>Ni。
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Key words
farmland soil,ecological risk assessment,riverbed soil,heavy metals
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