本文报道了在燃烧烟气、柴油汽车废气、雪茄烟和森林火灾烟中发现了甲基化多环芳烃。采用Maron和Ames介绍的平板—掺入试验方法,如果每平板的回变超过99.0％可信限,并观察到致突变性随浓度变化而递增,则可考虑为该化合物有致变性。 12-氯甲基苯并[a]芘对TA98菌株的致突变性比11-氯甲基苯并[a]芘强。当用TA100菌株时,这 This paper reports the discovery of methylated PAHs in combustion fumes, diesel vehicle emissions, cigars and forest fire smoke. Using the plate-incorporation assay described by Maron and Ames, mutagenesis of this compound can be considered if the per-plate regression exceeds the confidence limit of 99.0% and the mutagenicity observed increases with concentration. The mutagenicity of 12-chloromethylbenzo [a] pyrene to TA98 strain is stronger than that of 11-chloromethylbenzo [a] pyrene. When using TA100 strain, this