トリアコンチル基を化学結合したシリカゲルのガスクロマトグラフ用充填剤としての保持特性

概要

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Recently, octadecyl (C18), triacontyl (C30) and other chemically-bonded silica gels have been developed for HPLC. In this study, a C30 silica gel was selected and evaluated as a packing material for GC. Hexane, decane, tetradecane, ethyl acetate, 1-butanol, methyl isobutyl ketone and toluene were used as test samples. End-capped C30 silica was packed into a stainless-steel column (1/8 i.d., 150 mm long). All samples were detected using a flame ionization detector (FID). A relatively good linear relationship (r = 0.992, n = 8) existed between the logarithm of the retention factor (log k) and the boiling point of test samples using the C30 column at a column temperature of 150℃. Van't Hoff plots of test samples were also linear (r≧0.989) over the range of column temperatures from 50℃ to 200℃. It was inferred that the chemically-bonded C30 stationary phase behaved as a non-polar liquid phase and retained the sample by a gas-liquid partition chromatographic mode. The utility of a C30 silica gel as a GC chemically-bonded packing was favorable.
社団法人日本分析化学会の論文
2003-07-05