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Fast screening method for determining 2,4,6-trichloroanisole in wines using a headspace–mass spectrometry (HS–MS) system and multivariate calibration

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Abstract

The system based on coupling a headspace sampler to a mass spectrometer (HS–MS), which is considered one kind of electronic nose, is an emergent technique for ensuring and controlling quality in industry. It involves injecting the headspace of the sample into the ionization chamber of the mass spectrometer where the analytes are fragmented. The result is a complex mass spectrum for each sample analyzed. When several samples are analyzed the data matrix generated is processed with chemometric techniques to compare and classify the substances from their volatile composition, in other words, to compare and classify their flavor. So far, information from electronic nose applications has mainly been qualitative. In this paper we present a quantitative study that uses a multivariate calibration. We analyzed several white wines using HS–MS to determine 2,4,6-tricholoranisole (TCA). This is an off-flavor that is a serious problem for the wine industry. The method is simple because it does not require sample preparation, only addition of sodium chloride being necessary for sample conditioning. Also, it provides a fast screening (10 min/sample) of the quantity of TCA in wines at ultratrace (sub μg L−1) levels.

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Acknowledgments

The authors wish to thank the Ministerio de Ciencia y Tecnología (project ALI97-0765) for providing Mrs Martí's doctoral fellowship, the Universitat Rovira i Virgili for providing Mr Riu's doctoral fellowship and the Ministerio de Ciencia y Tecnología/INIA (project VIN00-045) for their financial support.

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Authors and Affiliations

  1. Departament de Química Analítica i Química Orgànica, Unitat d'Enologia (CeRTA), Facultat d'Enologia, Universitat Rovira i Virgili, Av. Ramón y Cajal 70, 43005, Tarragona, Spain

    M. P. Martí, M. Riu, O. Busto & J. Guasch

  2. Departament de Química Analítica i Química Orgànica, Facultat de Química, Universitat Rovira i Virgili, Pl. Imperial Tàrraco 1, 43005, Tarragona, Spain

    R. Boqué

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  1. M. P. Martí
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  2. R. Boqué
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  3. M. Riu
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  4. O. Busto
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  5. J. Guasch
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Correspondence to J. Guasch.

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Martí, M.P., Boqué, R., Riu, M. et al. Fast screening method for determining 2,4,6-trichloroanisole in wines using a headspace–mass spectrometry (HS–MS) system and multivariate calibration. Anal Bioanal Chem 376, 497–501 (2003). https://doi.org/10.1007/s00216-003-1940-z

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  • DOI: https://doi.org/10.1007/s00216-003-1940-z

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