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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Tunable Silver-Containing Stationary Phases for Multidimensional Gas Chromatography

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Author(s):
Souza, Israel D. [1] ; Nan, He [2] ; Queiroz, Maria Eugenia C. [1] ; Anderson, Jared L. [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Sao Paulo - Brazil
[2] Iowa State Univ, Dept Chem, Ames, IA 50011 - USA
Total Affiliations: 2
Document type: Journal article
Source: Analytical Chemistry; v. 91, n. 8, p. 4969-4974, APR 16 2019.
Web of Science Citations: 1
Abstract

To achieve high separation power of complex samples using multidimensional gas chromatography (MDGC), the selectivity of the employed stationary phases is crucial. The nonpolar x polar column combination remains the most popular column set used in MDGC. However, resolution of mixtures containing light analytes possessing very similar properties remains a formidable challenge. The development of stationary phases that offer unique separation mechanisms have the potential to significantly improve MDGC separations, particularly in resolving coeluting peaks in complex samples. For the first time, a stationary phase containing silver(I) ions was successfully designed and employed as a second-dimension column using comprehensive two-dimensional gas chromatography (GC X GC) for the separation of mixtures containing alkynes, dienes, terpenes, esters, aldehydes, and ketones. Compared with a widely used nonpolar and polar column set, the silver-based column exhibited superior performance by providing better chromatographic resolution of coeluting compounds. A mixture of unsaturated fatty acids was successfully separated using a GC x GC method in which the elution order in the second dimension was highly dependent on the number of double bonds within the analytes. (AU)

FAPESP's process: 16/01082-9 - Column switching liquid chromatography coupled to tandem mass spectrometry for the analysis of endocannabinoids in plasma samples
Grantee:Israel Donizeti de Souza
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/24721-0 - Silver-based ionic liquids for the separation and extraction of light olefins using comprehensive two-dimensional gas chromatography
Grantee:Israel Donizeti de Souza
Support Opportunities: Scholarships abroad - Research Internship - Doctorate