Comprehensive study of retention influencing gas chromatographic parameters affecting linear retention indices.

Autor: Kirchkeszner C; Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Petrovics N; Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Széles A; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Koshman Y; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Szabó BS; Hevesy György PhD School of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Nyiri Z; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Novák M; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary; Doctoral School of Environmental Sciences, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary., Rikker T; Wessling International Research and Educational Center, Anonymus u. 6, H-1045 Budapest, Hungary., Eke Z; Joint Research and Training Laboratory on Separation Techniques, Institute of Chemistry, Eötvös Loránd University, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary; Wessling International Research and Educational Center, Anonymus u. 6, H-1045 Budapest, Hungary. Electronic address: zsuzsanna.eke@ttk.elte.hu.
Jazyk: angličtina
Zdroj: Journal of chromatography. A [J Chromatogr A] 2024 Aug 16; Vol. 1729, pp. 465052. Date of Electronic Publication: 2024 Jun 05.
DOI: 10.1016/j.chroma.2024.465052
Abstrakt: Retention in gas chromatographic systems has a central role in the identification of compounds even if detectors providing spectral information are used. But linear retention indices (LRI) of a single compound originating from multiple sources tend to vary greatly, probably due to differences in the experimental settings of the determinations. The effect of gas chromatographic parameters on LRI has been investigated using 41 compounds - previously identified from food contact plastics - and n-alkanes (n-C 7 -n-C 40 ) used as reference series. As the reproducibility of LRIs under the same conditions is generally very good, the smallest changes in the settings often caused statistically significant, though irrelevant changes in the LRI values. Therefore, a multicriterial scoring-ranking system has been worked out to highlight the LRI value differences. Our results highlight that column length, heating rate, and film thickness can all be the reasons of the varying published LRI values. We also demonstrated that for the reproduction of LRI data, the chemistry (and not simply the polarity) of the stationary phase is crucial.
Competing Interests: Declaration of competing interest Declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper
(Copyright © 2024. Published by Elsevier B.V.)
Databáze: MEDLINE
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