[Selective inhibition of the fluorescence of benzo(a)pyrene and a mutagenic diol-epoxide derivative in living cells by liposoluble iodinated hydrocarbons].

It is shown that in living cells, some liposoluble collisional quenchers like n-iodo hexane and iodo benzene can be used to selectively quench the benzo(a)pyrene fluorescence, leving the diol-epoxide benzo(a)pyrene metabolite emission. The preferential solubilities of these compounds, fluorophors and quenchers, explain the results and the fluorophor location.