Retention behavior of chlorinated benzenes, chlorinated phenols, aldrin, and aroclor 1242 on tenax-gc, chromosorb 101, florisil, and carbopack C HT

Four sorbent materials, Tenax-GC, Chromosorb 101, Florisil, and Carbopack C HT were characterized using elution analysis by gas chromatography for chlorinated benzenes, chlorianted phenols, Aldrin and Aroclor 1242. Plots of log Vn versus °K−1 were linear with correlation coefficients of 0.992–1.000. Chlorinated phenols, Aldrin and Aroclor 1242 were not eluted on a Florisil column at temperatures as high as 325–375°C. Specific retention volumes, which were calculated for 20°C using results from linear regression analysis, generally followed the order: Tenax-GC > Chromosorb 101 > Carbopack C HT. At 250°C, measured specific retention volumes generally followed the order: Chromosorb 101 > Carbopack C HT > Tenax-GC. These results show that analytical procedures based on thermal desorption techniques may be developed for the determination of these chlorinated organic compounds. Tenax-GC is the best sorbent material based on retention properties.