SEPARATION OF POLYCHLORINATED-BIPHENYLS BY FAST GAS-CHROMATOGRAPHY

The separation of commercially available polychlorinated biphenyls (PC Bs) by fast gas chromatography (fast GC) has been studied. Aroclor 125 4 was separated by using two column types: DB-1 and SPB-608. The fast GC used a split-splitless injector to introduce the sample, followed b y a cold trap at -90 degrees C to focus the sample. Rapid heating was used to introduce the sample into the short chromatographic column to decrease band broadening. Hydrogen was the carrier gas at velocities o f 100 to 125 cm s(-1). Analyses were performed by using an electron ca pture detector (ECD). Separation was achieved with both columns in les s than 6 min, With the greatly shortened run times, reproducibility ca n be tested quickly and consequently with low cost.