Partition coefficients of selected environmentally important volatile organic compounds determined by gas–liquid chromatography with polydimethylsiloxane stationary phase

In this paper, partition coefficients (distribution constants) of 14 organic compounds of environmental importance (frequently determined in indoor air) between the gas and liquid phase (polydimethylsiloxane, PDMS) are presented, determined by two gas chromatographic methods: isothermal elution and...

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Bibliographic Details
Published in:The Journal of chemical thermodynamics 2005, Vol.37 (1), p.21-29
Main Authors: Kloskowski, Adam, Chrzanowski, Wojciech, Pilarczyk, Michał, Namieśnik, Jacek
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemical thermodynamics
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Gas chromatographic methods
General and physical chemistry
General. Theory
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Summary:In this paper, partition coefficients (distribution constants) of 14 organic compounds of environmental importance (frequently determined in indoor air) between the gas and liquid phase (polydimethylsiloxane, PDMS) are presented, determined by two gas chromatographic methods: isothermal elution and temperature programmed elution using the LTPRI (linear temperature programme retention index) approach. We examined applicability of this approach to polar compounds. We took efforts to ensure best possible accuracy and trace the possible sources of error. Precision was estimated by reproducing the results using four chromatographic columns differing in diameter and stationary phase coating thickness. We consider some factors influencing the determination of thermodynamic quantities by gas chromatography and suggest some improvements.
ISSN:0021-9614
1096-3626
DOI:10.1016/j.jct.2004.07.020