Selectivity and selectivity tuning in capillary gas chromatography
- 1 November 1985
- journal article
- research article
- Published by Wiley in Journal of High Resolution Chromatography
- Vol. 8 (11) , 782-798
- https://doi.org/10.1002/jhrc.1240081114
Abstract
The selection of stationary phases in capillary gas chromatography is discussed. Methyl silicone, phenyl methyl silicone, trifluoropropylmethyl silicone, biscyanopropyl silicone, and high molecular weight (HMW) polyethylene glycol are considered to be the basic phases. Selectivities and polarities between these phases are obtained by selectivity tuning. Selectivity tuning can be performed in three different ways, namely by synthesizing a tuned stationary phase, by mixing the basic phases, or by coupling capillary columns of different selectivities. In coupling capillary columns the variables are column length, β‐value, temperature, and/or pressure.Keywords
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