Ecological Systems and Devices Annotation << Back the estimaton of complex cancerogenic risk caused by pollution of environmental objects for the population of volgograd and Volzhsky D.S. Suhonosenko The article covers characteristics of sources of the cancer's risk for population of Volgograd and Volzhsky. The factors stipulating the pollution of free air in Volgograd and Volzhsky are submitted Questions of estimation of cancerogenic risk to population health caused by inhalation, peroral ways of entering the harmful substances are examined. Analysis of different cancerogenic substances share of the integral cancer risk is lead. The quantity indicator of complex cancerogenic risk caused by pollution of free air, water, soil and food for population is given. The influence of difference factors upon the calculated value of complex cancerogenic risk is shown. For problems of optimization the system of monitoring the priority risk sources forming the greatest contributions of complex cancerogenic risk are allocated. Key words: environment pollution; cancerogenic substances; complex cancerogenic risk; inhalation and peroral ways of entering; acceptable risk. Contacts: E-mail: dsuhonosenko@mail.ru Pp. 39-44.