“…The most dangerous for humans are hydrocarbon compounds of the carcinogenic group: 1,2-benzanthracene (Ñ18Í12), 3,4-benzpyrene (Ñ20Í12), 1,2-benzpyrene (Ñ20Í12), 3,4-benzofluorantene (Ñ20Í14). Particularly dangerous is 3,4-benzpyrene, which is a kind of indicator of the presence of other carcinogens in the mixture [4][5][6].…”