Isothermal retention indices on poly(3-cyanopropylmethylsiloxane) stationary phases
| Autor: | Jesús Eduardo Quintanilla-López, Ana María Tello, Rosa Lebrón-Aguilar, J. M. Santiuste |
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| Rok vydání: | 2009 |
| Předmět: |
Chromatography
Gas Chemical Phenomena Siloxanes Polarity (physics) Analytical chemistry Quantitative Structure-Activity Relationship Biochemistry Isothermal process Analytical Chemistry Chemometrics Nitriles Linear regression Organic Chemicals chemistry.chemical_classification Chromatography Column temperature Organic Chemistry Temperature General Medicine Polymer Models Chemical chemistry Linear Models Kovats retention index Adsorption Gas chromatography Algorithms |
| Zdroj: | Journal of Chromatography A. 1216:1630-1639 |
| ISSN: | 0021-9673 |
| Popis: | Experimental isothermal retention indices (I) at 348, 363, 378 and 393 K of 52 solutes of varied polarity on seven different poly(cyanopropylmethylsiloxane) stationary phases with cyanopropyl group percentages between 0% and 75% have been determined by a well-proven, accurate method. Some of these I values were obtained on new stationary phases with cyanopropyl percentages never used before. The influence of column temperature and polymer polarity on I was thoroughly investigated. Finally, retention models were developed relating I values to physicochemical and molecular properties by multiple linear regression. The best model of retention index prediction for the proposed cyanosilicones involves the Abraham's descriptors. |
| Databáze: | OpenAIRE |
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