The Study of PAHs Distribution in Underground Water in Southwest China

Abstract—Polycyclic aromatic hydrocarbons have very strong toxicity, it has intended to must be controlled primary by U.S. Environmental Protection Agency and the European Union. In this study, we investigated the samples of groundwater in 7 provinces of southwest China. The main conclusion is: (i) we detected the pollutants in all samples in the study area; (ii) The migration of PAHs pollutants follow the global distillation model, and the contaminants of high latitudes was more than low latitudes; (iii) The PAHs were mainly comes from agricultural pollution and life pollution in the study area, and artificial source> natural source; (iv) The study area belongs to karst landform, organic environment is very fragile, it is more likely polluted by Persistent Organic Pollutants. Keywords-polycyclic aromatic hydrocarbons; organic pollutants; karst I