CAJ | 학술논문

以水中总碱度为例，分析了测试过程中不确定度的来源，对各不确定度分量进行评定及合成，并计算得出合成不确定度和扩展不确定度。结果表明，对本测试方法影响较大的不确定度分量是标准物质配制、溶液体积引入和标定过程中的随机因素。在样品重复测定的条件下，测定结果的不确定度仅与溶液中的质量浓度有关。
이수중총감도위례，분석료측시과정중불학정도적래원，대각불학정도분량진행평정급합성，병계산득출합성불학정도화확전불학정도。결과표명，대본측시방법영향교대적불학정도분량시표준물질배제、용액체적인입화표정과정중적수궤인소。재양품중복측정적조건하，측정결과적불학정도부여용액중적질량농도유관。
With the determination of total alkalinity in water as an example, this article analyses the source of uncertainty in the testing process, evaluates and combines each uncertainty and calculates the combined uncertainty and expanded uncertainty. The results show that this test method is greatly influenced by the following uncertainties ： the preparation of reference materials, the volume of the introduced solution and the random factors in the calibration process. In the condition of repeated measurement of the sample, the uncertainty of the measurement result is related to the solution weight concentration only.