Preparation, evaluation, and comparison of wide bore (320 μm) and narrow bore (50 μm) cyanosilicone-coated capillary columns for gas chromatography

A. Aerts, J.A. Rijks, A. Bemgard, L. Blomberg

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11 Citations (Scopus)

Abstract

The preparation of wide bore (320 m) and narrow bore (50 m) fused silica capillary columns is described for immobilized cyanopropyl substituted silicones containing 60 and 88% substitution. The effect of high temperature deactivation with cyanopropylcyclosiloxanes was studied with a special test mixture. Curing was achieved with dicumyl peroxide or azo-tert-butane. The columns were evaluated and compared in terms of efficiency, activity, polarity, and temperature stability. Different coating methods were compared for the narrow bore columns. The activity of the 60% cyanopropyl columns that had been immobilized with dicumyl peroxide was significantly larger than for azo-tert-butane immobilized columns. The polarity of polar columns appeared to depend greatly on column temperature and is completely different for wide and narrow bore columns.
Original languageEnglish
Pages (from-to)49-56
JournalHRC & CC, Journal of High Resolution Chromatography and Chromatography Communications
Volume9
Issue number1
DOIs
Publication statusPublished - 1986

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