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http://hdl.handle.net/2445/187961
Title: | The potential of ion mobility spectrometry (IMS) for detection of 2,4,6-trichloroanisole (2,4,6-TCA) in wine |
Author: | Karpas, Zeev Guamán Novillo, Ana Verónica Calvo, Daniel Pardo Martínez, Antonio Marco Colás, Santiago |
Keywords: | Vi Espectroscòpia de mobilitat d'ions Calibratge Wine Ion mobility spectroscopy Calibration |
Issue Date: | 15-May-2012 |
Publisher: | Elsevier B.V. |
Abstract: | The off-flavor of "tainted wine" is attributed mainly to the presence of 2,4,6-trichloroanisole (2,4,6-TCA) in the wine. In the present study the atmospheric pressure gas-phase ion chemistry, pertaining to ion mobility spectrometry, of 2,4,6-trichloroanisole was investigated. In positive ion mode the dominant species is a monomer ion with a lower intensity dimer species with reduced mobility values (K0) of 1.58 and 1.20 cm2 V−1 s−1, respectively. In negative mode the ion with K0 = 1.64 cm2 V−1 s−1 is ascribed to a trichlorophenoxide species while the ions with K0 = 1.48 and 1.13 cm2 V−1 s−1 are attributed to chloride attachment adducts of a TCA monomer and dimer, respectively. The limit of detection of the system for 2,4,6-TCA dissolved in dichloromethane deposited on a filter paper was 2.1 μg and 1.7 ppm in the gas phase. In ethanol and in wine the limit of detection is higher implying that pre-concentration and pre-separation are required before IMS can be used to monitor the level of TCA in wine. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.talanta.2012.02.012 |
It is part of: | Talanta, 2012, vol. 93, p. 200-205 |
URI: | http://hdl.handle.net/2445/187961 |
Related resource: | https://doi.org/10.1016/j.talanta.2012.02.012 |
ISSN: | 0039-9140 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Bioenginyeria de Catalunya (IBEC)) |
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