Dependence of Gas Chromatographic Retention Data of Hydrocarbons on the Film Thickness of the Polydimethylsiloxane Stationary Phase

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Title:Dependence of Gas Chromatographic Retention Data of Hydrocarbons on the Film Thickness of the Polydimethylsiloxane Stationary Phase
Creators:
Krupčík, Ján
Skačáni, Ivan
Benická, Eva
Sandra, Pat
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 59, 11, pp. 2390-2396

Abstract

<p>Kovats indices of cyclic and aromatic hydrocarbons, separated by capillary gas liquid chromatography on polydimethylsiloxane capillary columns, were found to increase with increasing stationary phase film thickness. This effect is explained in terms of adsorption of the stationary phase on the active sites of the inner surface of the capillary column. Since the number of active sites is limited, the overall polarity of the polydimethylsiloxane stationary phase is better defined in columns with thick stationary phase films. Interlaboratory reproducibility of retention indices of cyclic and aromatic hydrocarbons is therefore also better when using capillary columns with thick films of the polydimethylsiloxane stationary phase. Retention data obtained on such thick-film columns are influenced by adsorption of the stationary phase on the column walls to a lesser extent than in columns with thinner films.

Title:Dependence of Gas Chromatographic Retention Data of Hydrocarbons on the Film Thickness of the Polydimethylsiloxane Stationary Phase
Creators:
Krupčík, Ján
Skačáni, Ivan
Benická, Eva
Sandra, Pat
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:59
Number:11
Page Range:pp. 2390-2396
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19942390UNSPECIFIED
ID Code:659
Item Type:Article
Deposited On:06 Feb 2009 17:02
Last Modified:06 Feb 2009 16:02

Citation

Krupčík, Ján; Skačáni, Ivan; Benická, Eva; Sandra, Pat (1994) Dependence of Gas Chromatographic Retention Data of Hydrocarbons on the Film Thickness of the Polydimethylsiloxane Stationary Phase. Collection of Czechoslovak Chemical Communications, 59 (11). pp. 2390-2396. ISSN 0010-0765

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