FIELD: exhaust gas detoxification. SUBSTANCE: exhaust gas with polycyclic aromatic hydrocarbon impurities, in particular, benz[a]pyrene, is irradiated with accelerated electron stream in presence of mineral acid vapors, for example, sulfuric or nitric acid, weight ratio of acid to impurity to be detoxified being (1- 1.2):1. EFFECT: enhanced efficiency of detoxification. 1 tbl
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