PCBs resulted as the dominant group of the chemicals tested
(163–4364 ng g−1 fat basis, average 1399 ng g−1 fat basis).
Concerning individual PCB congeners, hexachlorobiphenyl 153
accounted for the greatest proportion of total PCBs (37.4%), followed
in order by PCB 138 (30.0%) and PCB 180 (14.1%).