Effect of temperature on the polarity of some stationary phases for gas chromatography

Castello, Gianrico; Vezzani, S.; D'Amato, Giuseppina

doi:10.1016/s0021-9673(97)00381-6

Cited by 27 publications

(10 citation statements)

References 27 publications

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“…This phenomenon indicates that at higher temperatures polar interactions weaken. Similar dependence was observed by Castello28 in case of polar columns. In our investigation, the effect is less visible for the copolymer obtained in glycerol.…”

Section: Resultssupporting

confidence: 87%

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Investigation of the surface area and polarity of porous copolymers of maleic anhydride and divinylbezene

Maciejewska

Szajnecki

Gawdzik

2011

J of Applied Polymer Sci

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Porous copolymers of maleic anhydride (MA) and divinylbezene (DVB) in the form of regular microspheres were prepared by suspension polymerization. During copolymerization the mixture of 1,4‐dioxane and n‐dodecane as a pore‐forming diluent was used. It was found that specific surface area of the obtained beads is strongly dependent on the diluent system and polymerization medium and achieves a value from 4 to 535 m2/g. To determine the influence of polymerization medium on the selectivity and polarity of the copolymers, inverse gas chromatography (IGC) was applied. To determine these parameters, three procedures were applied: overall polarity, the selectivity triangle, and the ΔC method. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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Section: Resultssupporting

confidence: 87%

“…Castello28 proposed the Δ C method as a polarity indicator of gas chromatographic columns. Δ C can be considered as a measure of the difference in the behavior of the non‐polar and the polar homologous series.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the surface area and polarity of porous copolymers of maleic anhydride and divinylbezene

Maciejewska

Szajnecki

Gawdzik

2011

J of Applied Polymer Sci

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“…The polarity of cyanopropyl siloxane phases is known to be temperature dependent [14,28], which in the case of FAMEs affects their relative elution times and order. Differences in column temperature have been successfully used with cyanopropyl siloxane columns to identify many of the FAME isomers based on changes in the relative elution of FA isomers within and between different groups of FAMEs [13,15].…”

Section: Discussionmentioning

confidence: 99%

“…A method was recently proposed by which each test sample was consecutively analyzed twice using the same GC instrument and column but carried out using two different temperature programs [13]. This approach permitted the identification of most FAME isomers because temperature altered the polarity of the cyanopropyl siloxane phase [14] which in turn changed the relative elution of different types of FAMEs. This made possible the resolution of most isomers under either one of the two separation conditions [1,15].…”

Section: Introductionmentioning

confidence: 99%

Separation characteristics of fatty acid methyl esters using SLB-IL111, a new ionic liquid coated capillary gas chromatographic column

Delmonte

Kia

Kramer

et al. 2011

Journal of Chromatography A

153

106

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“…It has been shown that the apparent polarity of cyanopropyl phases is temperature dependent [46] and that different temperature and pressure programs may have significant effects on the elution patterns of C18:3 isomers [17]. This may be used to select different elution patterns.…”

Section: Description Of Data and Elution Patternsmentioning

confidence: 99%

Quantification of linolenic acid isomers by gas chromatography‐mass spectrometry and deconvolution of overlapping chromatographic peaks

Mjøs¹

2004

Euro J Lipid Sci & Tech

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Quantification of linolenic acid isomers by gas chromatography-mass spectrometry and deconvolution of overlapping chromatographic peaksThe use of a technique for deconvolution of overlapping chromatographic peaks, Gentle, has been evaluated for quantification of alpha linolenic acid isomers analysed by gas chromatography-mass spectrometry. Mixtures containing varying amounts of linolenic acid methyl ester isomers with two or three trans double bonds were analysed by two different temperature programs. Overlapping chromatographic peaks were resolved by Gentle, and the areas of the resolved peaks were compared with reference values calculated by use of internal standards. The results show that the small differences that exist between the mass spectra of the analysed isomers are sufficient to achieve deconvolution of severely overlapping peaks. The errors were larger than seen for quantification of chromatographically resolved peaks. Especially for small peaks in a peak cluster, the errors relative to the peak size were large.

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Effect of temperature on the polarity of some stationary phases for gas chromatography

Cited by 27 publications

References 27 publications

Investigation of the surface area and polarity of porous copolymers of maleic anhydride and divinylbezene

Investigation of the surface area and polarity of porous copolymers of maleic anhydride and divinylbezene

Separation characteristics of fatty acid methyl esters using SLB-IL111, a new ionic liquid coated capillary gas chromatographic column

Quantification of linolenic acid isomers by gas chromatography‐mass spectrometry and deconvolution of overlapping chromatographic peaks

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