Distributions of Minor and Trace Elements in Chinese Coals_百度...答:Among the elements determined are the follow ing minor and trace elements w hich are important to environmental protection and human health: As,Cd,Pb,Hg,Se,Mn,Ni,Cu,Zn,Sb,Co,Mo, F,Cl,V,Ba,U and Th. The ranges and means of concentrations of these elements are given. Comparison w ith...