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DETERMINATION OF TOTAL VICINAL DIKETONES IN BEER BY HEADSPACE CAPILLARY GAS CHROMATOGRAPHY
Author(s) -
Dupire S.
Publication year - 1998
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1998.tb00975.x
Subject(s) - reproducibility , brewing , chromatography , repeatability , vicinal , chemistry , round robin test , gas chromatography , notice , capillary gas chromatography , mathematics , law , organic chemistry , statistics , political science , fermentation
The determination of total vicinal diketones in beer by the headspace capillary gas chromatography method of the Institute of Brewing Analysis Committee has been collaboratively tested by the members of the Analysis Committee of the European Brewery Convention. Two collaborative trials on three beer samples were performed in 14 laboratories. Repeatability (r 95 ) and reproducibility (Ras) values were obtained for 9 laboratories over the range of 20 to 90 μg. It was judged that reproducibility coefficients ranging after the second test from 32 to 94 were poor but it was decided that the method should nevertheless be included in the Analytica EBC as a guideline method with notice on its poor precision .