Prediction of the net retention volumes in gas chromatography using porous polymers coated with different stationary phases
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A new expression which permits the prediction of the net retention volumes in gas chromatography with column packings of coated porous polymers is reported. The porous polymers Chromosorb 101 and Chromosorb 102 were used as supports and squalane, Ethofat and Carbowax 20M as stationary phases at three different column temperatures of 80°C, 100°C and 150°C. Several organic compounds of various polarity were used as test compounds and the net retention volumes, VNtheor, have been calculated according to this new expression. The VNtheor values were compared with the experimental net retention volumes, VNexp, and it was found that the difference between these two values is dependent on the type of compound and column packing. Nevertheless, the elution order could be predicted in most cases.
Key wordsGas chromatography Prediction of retention volume Porous polymers coated with liquid phases
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