抄録
PCB was detected in all samples of blood plasma. The plasma PCB levels of normal persons ranged from 1 ppb to 7 ppb, and that of the patients ranged widely from 2 ppb to 15 ppb, the latter were higher than the former statistically (P<0.05). PCB of patients' plasma showed very characteristic gas chromatograms both in quality and quantity. The urban residents had more PCB in their blood than the rural (P<0.01).
