Assessment of in vivo mutagenicity and trans-generational effect of compounds contained in suspended particulate matter in urban air

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We evaluated mutagenesis induced in the target organs, such as the lung, by exposure of total suspended particulate matter(TSP) in ambient air using a model transgenic rodent for detecting in mutations, named gpt delta mouse. Consequently, in vivo mutagenicity of TSP extract obtained in Tsukuba City was estimated as 0.76 x 10^<-5>/mg. Compounds causing in vivo mutagenisis in Tar have not been identified, but several observations suggest that any potent mutagens other than polycyclic aromatic hydrocarbons exist in ambient air.