Reproducibility of retention indices measurement of alkylbenzenes on crosslinked methyl silicone phase fused silica capillaries |
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Authors: | E Matisová P Kuráň |
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Institution: | (1) Department of Analytical Chemistry, Faculty of Chemical Technology, Slovak Technical University, Radlinského 9, 812 37 Bratislava, Czechoslovakia |
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Abstract: | Summary Reproducibility of the Kovats retention indices of alkylbenzenes was studied on conventional “PONA” fused-silica capillary
columns coated with crosslinked dimethyl silicone phase, with a film thickness of 0.5 μm. The data were compared with those
obtained on conventional OV-101 columns. The tested PONA columns showed reproducible chromatographic properties, capacity
ratios and high efficiencies. Having a standard deviation of s=0.03 i.u. of the retention indices on a single column, the
column-to-columns differences were found to be up to 0.3 i.u. Higher indices were determined for crosslinked columns, the
difference being in most cases about one i.u. |
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Keywords: | Gas chromatography Retention index reproducibility Alkylbenzenes HP PONA columns OV-101 glass capillary columns |
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