芜湖市工业区土壤重金属污染状况研究

通过对芜湖工业区(四褐山区、马塘区)土壤中重金属污染状况的调查,结果表明:土壤中重金属(Cu、Pb、Zn、Cd)含量绝大部分高于土壤元素背景值。在四褐山工业区,Cu污染最严重,Cd次之;在马塘工业区,Cd污染最严重,Zn次之。土壤中重金属含量基本上与土壤pH呈负相关关系,而重金属总量与可浸提态含量呈正相关关系。土壤中重金属污染来源主要是污水,大气粉尘沉降也是一个重要因素。

Heavy Metals in Soils in the Industrial Zones of Wuhu

An investigation was carried out on heavy metal contamination of soils in the industrial zones of Wuhu (Siheshan District and Matang District). The results indicated that the concentrations of heavy metals (Cu, Pb, Zn, Cd) in the soils of the two districts were higher than their respective background values. In Siheshan District, the pollution of Cu was the most serious, and the pollution of Cd came the next. In Matang District, the pollution of Cd was the most serious, and the pollution of Zn followed. The concentrations of heavy metals in the soils were basically negatively correlated with soil pH, while the contents of total heavy metals positively correlated with the content of their extractable forms. The heavy metals in the soil came mainly from the wastewater, and atmospheric dry deposition as well.