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Nonetheless, serious ecological consequences tend to be connected with coal mining and usage. With increasing reports on circulation and risks by polycyclic fragrant substances (PACs), the potential air pollution of coal resources needs to be addressed. Right here, the PAC concentrations in the topsoil, coal, and coal gangue of a typical coal mining area in Huaibei were examined. The mean ΣPACs in topsoil, coal, and coal gangue had been 1528.3, 274,815.8, and 10,908.3 μg·kg-1, respecti
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