摘要
以潼关县某金矿排水沟附近土壤为研究对象,对土壤中Sn、Sb、Pb、Cu和Cd等7种重金属污染状况进行评价,为金矿周围土壤污染的人工生态修复提供依据。结果表明:矿区附近土壤中Sn、Sb、Cd、Pb、Cu均已达到极严重污染,单项污染指数平均值分别为51.0、119.3、478.7、36.6、9.5;Cd最大值超过评价标准的478.7倍,Sb最大值超过评价标准的119.3倍;Fe、Mn污染相对较轻,但显示出一定的累积。相关性分析表明,Sn-Sb-Cd之间有高的相关性,它们可能为复合污染;Fe-Cu,Fe-Mn之间也有一定相关性,它们可能具有相近或相同污染源。
The contamination degree of seven heavy metals,including Sn,Sb,Pb,Cu,Cd,etc.,in the soil around a gold mine drainage in Tongguan County was assessed and analyzed,providing basis for the artificial eco-restoration of mine soils.As indicated by the results,the soil around the mine has been seriously contaminated by Sn,Sb,Cd,Pb and Cu,their single average contamination values are 51.0,119.3,478.7,36.6 and 9.5,respectively;the maximum Cd content has exceeded 478.7 times of the standards,and the maximum Sb is 119.3 times above the standards;the contamination degree of Fe and Mn is relatively low,but they have presented a certain degree of accumulation.The correlation analysis shows high correlation among Sn,Sb and Cd,they probably produce compound pollution in soils;certain correlation is also found between Fe and Cu,Fe and Mn,they may have close or similar sources of pollution.
出处
《安徽农业科学》
CAS
2012年第20期10422-10423,共2页
Journal of Anhui Agricultural Sciences
基金
陕西省教育厅项目(11JK0763)
渭南师范学院重点科研项目(08YKF012)
关键词
单项污染指数
土壤污染
重金属
相关系数
Single factor contamination index
Soil contamination
Heavy metals
Correlation coefficients
