Comprehensive Two-Dimensional High-Speed Gas Chromatography with Chemometric Analysis

Autor:	and Bryan J. Prazen, Carsten A. Bruckner, Robert E. Synovec
Rok vydání:	1998
Předmět:	Analyte Chromatography Analytical chemistry Ethylbenzene Analytical Chemistry law.invention Chemometrics chemistry.chemical_compound chemistry law Flame ionization detector Gas chromatography Gasoline Retention time Gram
Zdroj:	Analytical Chemistry. 70:2796-2804
ISSN:	1520-6882 0003-2700
Popis:	High-speed comprehensive two-dimensional gas chromatography (GC×GC) is performed, in which a polar second column performs separations every half second on portions of the effluent from a nonpolar first column. Chemometric techniques that are traditionally used on chromatographic separations with multichannel detection are applied to two-dimensional chromatographic data, for the purpose of quantifying incompletely resolved peaks. Generalized rank annihilation method (GRAM) is evaluated in the quantification of varying amounts of selected overlapped analytes in a GC×GC analysis of modified white gasoline. GRAM requires a sample and standard data set for quantification, and the high retention time precision arising from use of shortened GC columns aids in the analysis. Results from GRAM analysis of GC×GC data are compared with a reference GC method. The test analytes ethylbenzene and m-xylene, existing in various proportions in white gasoline samples, were successfully deconvoluted despite having resolutions...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0ae2bbffd853d827f81b6b67824a6faf https://doi.org/10.1021/ac980164m Zobrazit plný text záznamu