Comparative on causes and accumulation of selenium in the tree-rings ambient high-selenium coal combustion area from Yutangba；Hubei；China

IEECAS SKLLQG

Health effects of arsenic；fluorine；and selenium from indoor burning of Chinese coal

IEECAS SKLLQG

Distribution and mode of occurrence of As；Hg and Se and sulfur in coal Seam 3 of the Shanxi Formation,Yanzhou Coalfield；China

IEECAS SKLLQG

Factors that influence the extraction of polycyclic aromatic hydrocarbons from coal

IEECAS SKLLQG

Mineral and chemical composition and some trace element contents in coals and coal ashes from Huaibei coal field, China

IEECAS SKLLQG