N,N'-BIS(PARA-PHENYLBENZYLIDENE)-ALPHA,ALPHA'-BI-PARA-TOLUIDINE AS STATIONARY PHASE IN A PACKED AND IN A MICRO-PACKED COLUMN

The chromatographic behavior of a synthetic mixture of polycycllc aromatic hydrocarbons (PAH) was studied on two columns: a packed column (1.80 m, 2-mm i.d., 6-mm o.d., glass) and a micropacked column (3.00 m, 0.6-mm I.d., 2-mm o.d., glass). The columns were packed with 2.8% (w/w) N, N'-bis(p-phenylbenzylidene)-α,α'-bl-p-toluidlne (BPhBT) on Chromosorb WHP 80-100 mesh. BPhBT was chosen In this study as stationary phase because of Its low bleed level, high efficiency, its excellent properties in the resolution of PAH. The measurements were carried out with a GC-MS system of Varian Mat. Scanning electron microscopy and thermal analyses (DSC and TG) were applied to study the behavior of BPhBT during thermal treatment and before and after the use In the gas chromatograph. The highest separation power for the BPhBT as stationary phase was achieved at a column temperature of 275-280°C. © 1979, American Chemical Society. All rights reserved.