Huainan Mining Area Environment Distribution Of Polycyclic Aromatic Hydrocarbons In The Occurrence Law And Environmental Impact

Polycyclic aromatic hydrocarbons (PAHs) are molecules built up of benzene rings. Five hundred kinds of compounds have been proved to be carcinogenic substance, in which PAHs are important ones . Owing to their latent harm to the environment, increasing attention of the public was focused on the movement and control discipline of them. It has been systematically studied on the species, contents, distribution and occurrence of the PAHs in raw coal, coal mining waste, waste water, sediments, soil from the Huainan mining field by way of analytical chemistry, organic geochemistry and environmental chemistry. PAHs have been extracted from different kinds of samples using chloroform (CHCl3) and analyzed by using high perform liquid chromatography (HPLC). The environmental effect of the PAHs has been evaluated, which provide the scientific evidence for an evaluation on the organic contamination around the circumstance of the Huainan mining field. The experiment data indicate that the contents of PAHs in all the samples are much higher than the limitation of EPA standard. The changing of the species and contents of PAHs in different samples are almost the same, though the history of the mine and the forming time of gangue-hill differs distinctly. It indicates that PAHs can be realeasd from coal and coal mining waste (gangue) to the water system, soil system, then biology chain, during the weathering and raining, and result in harmful impact on human being.