Accumulation of polychlorinated biphenyls in the population of Greater S. Paulo, Brazil

Abstract

Experimental and clinical studies have proved, conclusively, that polychlorinated biphenyls (PCBs) can effect human health adversely, to the point of constituting a serious public health problem. Thus the study of the deposition of PCBs in a significant sample of the inhabitants of Greater S. Paulo, Brazil, was considered to be of interest. Samples of subcutaneous fat were obtained from 189 people who had suffered violent death and analysed by as chromatography. Average levels of 0.8661 parts per million (ppm) were found in males, who presented a linear increase of deposition according to chronological age; this was not observed with females, however in whom the values of deposition were, in general, 1.4530 ppm 12.7% of all samples presented values greater than 1.95 ppm. The importance of such findings is discussed and protective measures that should be taken to avoid further increase of absortion by the Brazilian population are indicated.