卡尔费休法测定胡椒水分含量的比较研究

摘要

以蒸馏法测定胡椒水分含量结果为基准,比较卡尔费休容量法测定胡椒(Piper nigrum L.)水分的准确度和精确度,并获得校正系数平均值2.18.结果表明:卡尔费休法可达到蒸馏法的测定准确度和精确度,而且操作简便,是可靠的胡椒水分含量测定方法.%The accuracies and precisions of the pepper water contents tested by the Carl-Fischer method were compared with the toluene distillation method as a standard conventional method. The results showed that the oxidation adjusting coefficients for the Carl-Fischer method were 2.18. The accuracies and precisions of the Carl-Fischer method were as the same as the toluene distillation method in determining pepper water by the Carl-Fischer method. The Carl-Fischer method is facility and credibility. It can be applied in measurement of pepper water.