IS ENVIRONMENTAL POLLUTION WITH POLYCHLORINATED BIPHENYLS A PROBLEM FOR BULGARIA.

Analysis of the pollution sources and levels of polychlorinated biphenyls (PCBs) in Bulgaria and other countries is performed. Acceptable limits in different media are compared with the existing levels. At present PCBs are a problem more as by-products of different combustion processes. The need for additional studies is underlined concerning the environmental and health long term effects. [ABSTRACT FROM AUTHOR]