福州市某区土壤重金属污染特征及成因解析

以福州市某区土壤为研究对象，采用CP—MS测定福州市某区土壤重金属含量，运用主成分分析对土壤重金属的主要成因进行分析．结果表明：该区土壤重金属的平均含量几乎全部超过福建土壤背景值，表明该区土壤重金属含量受到了人为源输入的影响，且城市某区土壤重金属含量明显高于近郊土壤．该区土壤中不同重金属的成因存在差异，其中第1主成分中Pb、Zn、Cu主要来源于交通运输，Cr、Cd主要来源于工业污染；第2主成分中Co、Ni属于自然源；第3主成分中Mn和As则主要来源于生活区的燃煤．

Study on the characteristics and the analysis of causes of soil heavy mental pollution in Fuzhou urban core

Used the soil samples from the urban core of Fuzhou as research object, on the determination of heavy metals in soil by ICP - MS. Principal component analysis was applied to identify the causes of heavy metal. The re- suits showed that the average of Fuzhou urban core soil heavy mental almost all were higher than Fuzhou soil back- ground value, indicating that Fuzhou urban core was influenced by anthropogenic sources, and the urban core soil heavy mental pollution was obviously higher than the suburban soil. Fuzhou urban core soil heavy metals were in different causes, the first principal component of Pb, Zn, Cu mainly comes from transportation, Cr, Cd mainly comes from industrial pollution; the second principal components of Co and Ni comes from natural source; the third principal component of Mn and As is mainly comes from the life coal activities.