贵州省黔南地区表层土壤中多环芳烃分布特征

The Characteristic Distribution of Polycyclic Aromatic Hydrocarbon Compounds in Topsoil of Qiannan Area in Guizhou

为了解黔南地区表层土壤中多环芳烃（PAHs）的污染状况,共采集12个县市土壤样品98份进行16种多环芳烃的定量分析,对其分布特征、污染水平进行了探讨.结果表明,土壤中PAHs检出含量为0.4～ 755.9 μg/kg,其中芴和苯并（a）蒽为检出率最高的主要污染物,均值分别为4.47和6.95 μg/kg,与国内其它地区报道相比,黔南地区表层土壤受到一定程度的PAHs污染,但处于较低的污染状态.

In order to investigate the residual pollution of the polycyclic aromatic hydrocarbons （PAHs） in soil samples of Qiannan area,97 samples from 12 counties of Qiannan area of Guizhou Province were collected to investigate the residue,the distribution characteristics,pollution levels,and origins of the PAHs.The total PAHs concentration in the samples varied from 0.4 to 755.9 μg/kg,and the fluorene and benzo （a） anthracene were the highest detection rate in the main pollutants.The average values were 4.47 μg/kg and 6.95 μg/kg.Compared with the other areas in the reports,the topsoil of Qiannan area was PAHs contaminated to some extent.