We present some results of monitoring the polycyclic aromatic hydrocarbons (PAH) in snow cover of industrial centers in Baikal region (Irkutsk and Shelekhov) obtained in the period from 1996 to 2001. The levels and rates of accumulation for 11 identified compounds included in the priority list of ecological toxins are estimated. The identification of PAH is being done by use of the HPLC method.