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首页> 外文期刊>Journal of the Institute of Brewing >Determination of the Accuracy, Repeatability and Reproducibility of a Method for the Determination of Alcohol in Beer by Near Infra Red Spectroscopy
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Determination of the Accuracy, Repeatability and Reproducibility of a Method for the Determination of Alcohol in Beer by Near Infra Red Spectroscopy

机译：近红外光谱法测定啤酒中酒精含量的方法的准确性，重复性和重现性的测定

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摘要

A method for the determination of alcohol in beer by Near Infra Red Spectroscopy was collaboratively tested by the Analysis Committee of the European Brewery Convention according to ISO Standard 5725 in order to determine its suitability for publication in Analytica-EBC. Accuracy, repeatability r(95) and re-producibility R(95) values are presented. The NIR method was found to have better within and between laboratory precision than the reference distillation method for the determination of alcohol. Repeatability r(95) was found to be independent of the mean value and was 0,032% V/V over the range 2,18 to 8,77% V/V alcohol. Reproducibility R(95) was found to be dependent on the mean and is 0,017m + 0,006% V/V over the range of alcohol tested. The NIR method has acceptable accuracy when compared to the distillation method. The method is recommended for inclusion in Analytica-EBC.
机译：为了确定其是否适合在Analytica-EBC中发表，欧洲啤酒厂分析委员会根据ISO标准5725共同测试了一种通过近红外光谱法测定啤酒中酒精含量的方法。提出了准确性，可重复性r（95）和可重复性R（95）值。人们发现，在实验室精度之内和之间，近红外光谱法比用于测定醇的参考蒸馏法更好。发现重复性r（95）与平均值无关，并且在2.18％至8.77％V / V酒精范围内为0.032％V / V。发现重现性R（95）取决于平均值，并且在测试的酒精范围内为0.017m + 0,006％V / V。与蒸馏法相比，NIR法具有可接受的精度。建议将该方法包括在Analytica-EBC中。

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