PMID: 16524094Mar 10, 2006Paper

Separation characteristics of phenyl-containing stationary phases for gas chromatography based on silarylene-siloxane copolymer chemistries

Journal of Separation Science
Waruna KiridenaC F Poole

Abstract

The solvation parameter model is used to characterize the retention properties of five open-tubular column stationary phases (ZB-5 ms, DB-5 ms, DB-XLB, DB-17 ms, and DB-35 ms) based on silarylene-siloxane copolymer chemistries at five equally spaced temperatures over the range 60-140 degrees C. System constant differences and regression models for varied compounds are used to establish the selectivity equivalence of the silarylene-siloxane copolymer stationary phases and to compare their separation characteristics with poly(dimethyldiphenylsiloxane) stationary phases containing a nominally similar concentration of phenyl groups. These studies demonstrate that ZB-5 ms and DB-5 ms are selectivity equivalent. DB-XLB is significantly more dipolar and polarizable than DB-5 ms. In general terms, the silarylenesiloxane copolymer stationary phases are slightly less cohesive and more dipolar and polarizable with similar hydrogen-bond basicity to the poly(dimethyldiphenylsiloxane) stationary phases they were designed to replace. None of the silarylenesiloxane copolymer or poly(dimethyldiphenylsiloxane) stationary phases are hydrogen-bond acidic. Selectivity differences between the two types of stationary phase are temperature dependent a...Continue Reading

References

Jan 11, 2000·Journal of Chromatography. a·C F PooleW W Koziol
Apr 20, 2001·Journal of Chromatography. a·C F PooleW W Koziol
Sep 19, 2002·Journal of Chromatography. a·Colin F Poole, Salwa K Poole
Jun 25, 2004·Journal of Chromatography. a·Michael H AbrahamAndreas M Zissimos
Aug 7, 2004·Journal of Chromatography. a·Bernhard X Mayer-HelmWalfried Rauter
Dec 14, 2004·Journal of Separation Science·Waruna KiridenaColin F Poole

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