Geochemical behavior of trace elements in coals in Baishan area, Jilin Province

Concentration of elements including As, B, Ba, Cd, Cu, Hg, Pb, Se, Sr and other trace elements in channel samples have been determined, which collected in main active mines in Baishan, Jilin Province. The results indicated that characteristics and trace elements of coal in Taiyuan Group and Shanxi Group are different due to different coal-forming environment. The content of As, Hg, Pb, Se and Zn are obvious larger in Taiyuan Group than in Shanxi Group, but the concentration of Ba, Cr, Cu, Mn and V are lower in Taiyuan Group. Analysis results show that the concentration of As, B, Hg, Pb and Se of Baishan coals are markedly higher than average values of the earth crust, Co and Cd concentration of coals are approached the earth crust average value, and other of trace elements in Baishan coals are sparsity. Statistical results show that the elements As, Cu, Hg, Pb and Se are correlated with Fe, which indicates As, Cu, Hg, Pb and Se may possibly be existed in pyrite in coals.