泉州市324国道泉州至塘头段路旁土壤中重金属来源分析

Multivariate Analysis Approach to Study the Source of Heavy Metals in Heavy Traffic Areas in the 324 National Highway Section of Quanzhou toTangTou

分析了泉州市324国道泉州至塘头段路旁土壤中14种重金属元素Sc、V、Fe、Mn、Co、Ni、Cu、Zn、As、Cd、Sn、Sb、Pb、Bi的含量,用富集因子和多元统计分析方法探讨了重金属的污染特征和可能来源。结果表明,Pb、Sn、Sb、Cd、Ni、Zn、Sc、Cu和Bi的含量均超过泉州市土壤背景值,污染较严重;Ni、Sb、Sn的高富集系数说明其受人类活动影响较大。相关分析和因子分析结果显示,上述14种元素主要有3个来源:Sn、Sb、Pb、Bi、Ni、Cu、Zn、Cd主要来源于交通污染;As、Sc、Fe来源于人类工业活动;而Co、Mn、V主要来源于土壤母质。聚类分析的结果也验证了因子分析的结果。

In this paper,concentrations of Sc,V,Fe,Mn,Co,Ni,Cu,Zn,As,Cd,Sn,Sb,Pb and Bi in roadside soils alongside the 324 national highway section of QuanZhou to TangTou were measured by ICP-MS.Enrichment factor and multivariate analysis were taken to analyze the source and pollution characteristics of heavy metals.The results indicated concentrations of Pb,Sn,Sb,Cd,Ni,Zn,Sc,Cu and Bi were beyond the soil background content in Quanzhou city.And the high enrichment factors of Ni,Sb and Sn were likely to confirm an important role of anthropogenic pollution.The results of factor analysis and correlation analysis showed the 14 metals came from three sources.Sn,Sb,Pb,Bi,Ni,Cu,Zn and Cd were related to traffic;As,Sc and Fe came from the processes of industrial facilities;Co,Mn and V were associated with soil-based.The dendograms obtained from cluster analysis also supported the observed results.