MULTIVARIATE-ANALYSIS APPLIED TO THE STUDY OF THE DISTRIBUTION OF CHLOROBIPHENYLS (CBS), INCLUDING THE NON-ORTHO-CBS, IN FISH AND SEA MAMMALS

Twenty-one individual chlorobiphenyls (CBs), including the most toxic non-ortho-CBs, were determined in 52 samples of sea mammals, harbour p orpoise (Phoceana phoceana), dabs (Limanda limanda), seals (Phoca vitu lina) and dolphins (Tursiops truncatus). The toxic non-ortho-CBs and m ono-ortho-CBs were isolated from the di-and tri-ortho-CBs using a pyre nylsilica HPLC column prior to the final determination by GC with elec tron-capture detection, The distribution of the CBs in the different s pecies mere studied by principal component analysis, Separations of ma les and females, young and adult individuals and the different species of sea mammals were obtained based on the degree of accumulation of C Bs.