The PCA and CA analyses showed that:(1) Cu, Co,Zn,Cd and V originated from mixed sources; (2)Be,Pb and As came from natural sources and were mainly affected by weathering and erosion of parent rock material; (3)Cr,Ni and Ba resulted from fine particle pollution; and (4) Hg oi0riginated from anthropogenic sources, mainly driven by mining, beneficiation, smelting and acid mine drainage