A method for separating PCBs and OCPs in biota samples.

Chromatographic fraction and cleanup method was developed for PCBs and OCPs in biota samples, using a self-developing chromatographic fraction instrument and solid phase mixture. The solid phase was composed of florisil(30%~35%), acid-treated silica gel(50%~60%)and anhydrous sodium sulphate(10%~15%). The recoveries of spiked PCBs and OCPs in column ranged from 96.4% to 119% and from78.4% to 103% respectively, while in fish fat tissue ranged from 74.4% to 100% and from 78.3% to 102% respectively. This approach was proved to be an efficient, fast, simple and cost-effective method for fraction and cleanup of PCBs and OCPs in biota samples.