Assessment on Pollution of Heavy Metal in Soil along Road with Method of the index of geoaccumulation

Objective To assess the pollution of heavy metals in soil along road. Methods The sampling of soil was done along the section of No.319 Nation Road located in the Xinluo district of Longyan city and heavy metals(Cu,Zn,Cd,Pb,As,Cr,Ni,Fe,Mn)in soil along road was assessed by method of geoaccumulation. Result The contedts of Cd,Pb,Cr and Cu in the soil in the observed area were higher than soil environmental background values in Fujian Province, their average contents being 23.6,4.6,1.7 and 1.5 times. The soil samples were highly polluted by Cd, next by Pb, and slightly by Cr. The absorptive capacity of soil to heavy metals and its pollution levels were in the following orders:CdPbCrCuAsZnNiMnFe. Conclusion The pollution of Cd and Pb in the soil along road was serious and the main sources were the trace heavy metals in exhaust fume and tires of automobiles running on the road.