土壤重金属污染潜在风险评价  

Potential risk assessment of heavy metal pollution in soil

作　　者：杨潇瀛[1] 张力文[1] 张凤君[1] 马哲 李龙辉[1] 

机构地区：[1]吉林大学环境与资源学院,长春130026 [2]吉林省环境保护厅,长春130026

出　　处：《世界地质》2011年第1期103-109,共7页World Geology

基　　金：国家重大水专项(2008ZX07207-007-04);"十一五"国家科技支撑计划(2006BAJ08B09)联合资助

摘　　要：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。For investigation of the risk assessment of Cd and Ni pollution in soil,the authors used geo-accumulation index and potential ecological risk index methods,taking the soils in riverbed and farmland of one river in North China as an example.The results showed that the soils from riverbed and farmland near waste smelting center were severely polluted by Cd and Ni,which were higher than the local background soil value.The enrichment degree of heavy metals in riverbed was CdNi,and the Cd reached grade 5（heavy pollution degree）.Compared with the local soil background value,the concentration of heavy metals in the river showed serious ecological risk,and the order of potential ecological risk of the two heavy metals was CdNi.

关 键 词：河床土壤 重金属 农田土壤 生态风险评价 

分 类 号：X53[环境科学与工程—环境工程]