Comparison of sources of metals in road-dust and soil in Guiyang
In this study, multivariate statistical analysis was employed for source identification with 78 road dust samples and 89 soil samples. The average concentrations of metals in the road dust were much higher than those in the soil, except for As. Concentrations of road dust metals were higher than the soil background contents in China and Guizhou, and concentrations of associated soil metals were also higher than the soil background contents in China and Guizhou except for Pb. High concentrations of Cd, Cr, Pb, Hg, Cu, Zn were influenced by anthropogenic sources. The metal sources of road dust and soil samples were evidently different, as derived by correlation coefficient analysis （CA） and principal component analysis （PCA）. Transportation emissions and steel plants were the main metals sources, followed by soil transported from other regions. Pb in road dust mainly came from traffic emission and steel plants, while Cr of soil mainly from soil transported from other regions
NETL
NSTL
万方数据
维普
