面粉中灰分的测量结果不确定度的评定

Uncertainty evaluation of ash content in wheat flour

对灰分测量结果不确定度进行了评定.采用国标方法GB/T5009.4-2003中的重量法测定面粉中灰分.通过对影响样品测试过程的不确定度分量的分析和量化,求出被测量(灰分)的标准不确定度和扩展不确定度,给出各分量对总测量不确定度的相对贡献,对测量结果进行了表述.建立了面粉中灰分测量结果不确定度的评定方法.

This article evaluates the uncertainty of ash content in wheat flour, when the ash content in foods was detected by weight method based on GB/T5009.4- 2003. A new method evaluating the uncertainty of ash content in wheat flour is presented and the method is simple, rapid and precision.