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A natural deep eutectic solvent - protonated L-proline-xylitol - based stationary phase for gas chromatography
Abstrakt
The paper presents a new kind of stationary phase for gas chromatography based on deep eutectic solvents (DES) in the form of a mixture of L-proline (protonated with hydrochloric acid) as a hydrogen bond acceptor (HBA) and xylitol as a hydrogen bond donor (HBD) in a molar ratio of HBA:HBD 5:1. DES immobilized on a silanized chromatographic support was tested by gas chromatography (GC) in order to determine its resolving power for volatile organic compounds. Studies have demonstrated the suitability of this type of DES as a stationary phase for GC. The Rohrschneider-McReynolds constants were determined for the synthesized DES, revealing that it is a polar stationary phase (Σ(ΔI) = 1717). The selectivity of DES is influenced by the presence of hydroxyl groups in the xylitol structure capable of forming hydrogen bonds of a donor nature and the proton acceptor properties of the protonated L-proline structure. The presence of additional interactions is brought about by the presence of the carboxyl group. As a result, the retention of alcohols is several times higher (200-670%) than the expected value based on their boiling points. A significant increase in retention (400-970%) was also found for pyridine derivatives. The developed DES stationary phase is characterized by very good repeatability of retention and stability (up to 140°C). The efficiency of the prepared columns (6300-11300 theoretical plates/m) and the selectivity of the DES stationary phase are competitive with the commercial products.
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Autorzy (4)
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Andrzej Przyjazny
- Kettering University, USA
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Pełna treść
- Wersja publikacji
- Accepted albo Published Version
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.chroma.2022.463238
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- artykuły w czasopismach
- Opublikowano w:
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JOURNAL OF CHROMATOGRAPHY A
nr 1676,
ISSN: 0021-9673 - Język:
- angielski
- Rok wydania:
- 2022
- Opis bibliograficzny:
- Momotko M., Łuczak J., Przyjazny A., Boczkaj G.: A natural deep eutectic solvent - protonated L-proline-xylitol - based stationary phase for gas chromatography// JOURNAL OF CHROMATOGRAPHY A -Vol. 1676, (2022), s.463238-
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1016/j.chroma.2022.463238
- Źródła finansowania:
- Weryfikacja:
- Politechnika Gdańska
wyświetlono 454 razy
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