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Measurement of free SO2 in wine with 7.4-μm difference frequency spectrometer

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Abstract.

A 7.4-μm difference frequency spectrometer is used for analysing the headspace above the liquid surface of a sample of red wine for SO2. The analysis is based on previously determined line parameters for a number of SO2 lines of the ν3 band, and allows fast, interference-free determination of the concentration without the need for any calibration against a standard of known concentration. The potential for developing this technique into a method for determining free and total sulphur dioxide in beverages is discussed.

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Authors and Affiliations

  1. Danish Institute of Fundamental Metrology, Matematiktorvet 307, 2800 Lyngby, Denmark, , , , , , DK

    J. Henningsen

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  1. J. Henningsen
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Received: 16 January 2003 / Revised version: 19 February 2003 / Published online: 9 April 2003

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ID="*"Corresponding author. Fax: +45-4593/1137, E-mail: jh@dfm.dtu.dk

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Henningsen, J. Measurement of free SO2 in wine with 7.4-μm difference frequency spectrometer . Appl Phys B 76, 451–456 (2003). https://doi.org/10.1007/s00340-003-1141-7

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  • DOI: https://doi.org/10.1007/s00340-003-1141-7

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