PCB levels in clyde marine sediments and fauna

Abstract Surveys in the dumping grounds for sewage from the City of Glasgow show accumulations of PCBs in superficial sediments, suggesting that significant quantities of these chlorinated hydrocarbons have been dumped for about 20 years with a marked increase about 10 years ago. The benthic fauna in the area is correspondingly contaminated. With restrictions on the manufacture of PCBs and the elimination of other sources in the catchment area, levels of contamination are expected to drop.