摘要
通过对典型矿区土壤重金属污染现状与分布规律研究,发现土壤污染的主要因子是Cd、As、Hg、Cu、Pb、Zn等重金属元素污染,金矿三废排放是土壤重金属污染的主要来源。一号金矿区Hg、Cd、As三种元素对土壤危害的贡献率之和达到94%,其中仅Hg元素的贡献率就达到了77%。二号金矿区Hg、Cd、As、Pb、Cu五种元素对土壤危害的贡献率之和达到97%,其中仅Hg元素的贡献率就达到了61%。金矿区土壤重金属元素潜在生态危害强、很强的土壤样品数量占总数的66.54%,占金矿专题研究区控制总面积的79.51%,土壤潜在生态危害严重,本成果为金矿区土壤污染防治提供了科学依据。
Present situation of heavy metal pollution and distribution in soil of goldfields are studied. Our results indicate that heavy metal pollution, such as Cd, As, Hg, Cu, Pb, Zn, is the main cause of soil pollution and goldfields ＂three waste＂ is the main source of soil heavy metal pollution. The contribution of three elements, Hg, Cd, As, to soil pollution reaches 94% at Ggoldfield 1 with Hg alone contribution 77%. The contribution of five elements, Hg, Cd, As, Pb, Cu, to soil pollution reaches 97% at Goldfield 2 with Hg alone contribution 61%. About 66% of soil samples studied here show strong potential ecological harm of heavy metal elements, which accounts for -80% of the controlling area of the studied golfields, providing a scientific basis for pollution controll of gold field.
出处
《地球化学》
CAS
CSCD
2013年第6期557-566,共10页
Geochimica
基金
山东省国土资源厅大调查项目<山东省东部地区农业生态地球化学调查>(2006709)
关键词
土壤
重金属元素
污染
风险评价
soil
heavy metal elements
pollution
risk assessment
