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Retention Behaviour of Alkylated and Non-Alkylated Polycyclic Aromatic Hydrocarbons on Different Types of Stationary Phases in Gas Chromatography

Vrije Universiteit, Department of Environment and Health, De Boelelaan 1108, 1081 HZ Amsterdam, The Netherlands
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Separations 2019, 6(1), 7; https://doi.org/10.3390/separations6010007
Received: 30 November 2018 / Revised: 17 January 2019 / Accepted: 24 January 2019 / Published: 29 January 2019
(This article belongs to the Special Issue Five Years of Separations: Feature Paper 2018)
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Abstract

The gas chromatographic retention behaviour of 16 polycyclic aromatic hydrocarbons (PAHs) and alkylated PAHs on a new ionic liquid stationary phase, 1,12-di(tripropylphosphonium) dodecane bis(trifluoromethanesulfonyl)imide (SLB®-ILPAH) intended for the separation of PAH mixtures, was compared with the elution pattern on more traditional stationary phases: a non-polar phenyl arylene (DB-5ms) and a semi-polar 50% phenyl dimethyl siloxane (SLB PAHms) column. All columns were tested by injections of working solutions containing 20 parental PAHs from molecular weight of 128 to 278 g/mol and 48 alkylated PAHs from molecular weight of 142 to 280 g/mol on a one dimensional gas chromatography-mass spectrometry (GC-MS) system. The SLB PAHms column allowed separation of most isomers. The SLB®-ILPAH column showed a rather different retention pattern compared to the other two columns and, therefore, provided a potential for use in comprehensive two-dimensional GC (GC×GC). The ionic liquid column and the 50% phenyl column showed good thermal stability with a low bleed profile, even lower than that of the phenyl arylene “low bleed” column. View Full-Text
Keywords: ionic liquid stationary phase; gas chromatography; chromatographic selectivity; alkylated polycyclic aromatic hydrocarbons (alkylated PAHs) ionic liquid stationary phase; gas chromatography; chromatographic selectivity; alkylated polycyclic aromatic hydrocarbons (alkylated PAHs)
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Skoczyńska, E.; de Boer, J. Retention Behaviour of Alkylated and Non-Alkylated Polycyclic Aromatic Hydrocarbons on Different Types of Stationary Phases in Gas Chromatography. Separations 2019, 6, 7.

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