CHARACTERIZATION OF MUTAGENS IN AIRBORNE PARTICULATES FROM BEIJING AREA
北京地区大气颗粒物中硝基多环芳烃与多环芳烃的研究

A procedure for simultaneous determination of PAH and NO2-PAH, including extraction, preseparation, reduction and analysis with HPLC, was developed. By using this procedure coupled with Ames assay, it was found that there are not only mutagenic PAH but also direct mutagenic NO2-PAH in airborne particulates from different sampling sites in Beijing. The concentrations of PAH and NO2-PAH are higher in the winter than in the summer and the pollution is more serious in commercial and residential areas than in the other areas.