The Health Risk Assessment of Organic Pollution in Coal Mine Water

In order to evaluate the health risk of mining water organic pollution,organic pollutants from six mining water resources were detected by blow- off gathering / solid- phase extraction and then GC- MS,and analyzed by health risks assessment model of contaminated sites recommended by U. S. EPA. The result showed that the main organic pollutants included dichloromethane,sym- dichloroethane,carbon tetrachloride,benzene and di( 2- ethylhexyl) phthalate; the non- carcinogenic risk indexes of these organic pollutants were lower than risk limit,but the cancer risk value of carbon tetrachloride and sym- dichloroethane exceeded the limit,respectively being 5. 54E- 06 and 4.64E- 06; the non- carcinogenic risk indexes of six mining water were lower than risk limit,but cancer risks are existed in mine waters of the first and second coal mine and receptor being long- term exposure to the water would affect health of themselves.