利用离子色谱法测定水中碘化物的不确定度

Evaluation of Uncertainty for the Measurement of Iodide in Water Based on Ion Chromatography

依据JJF 1059.1-2012,建立了离子色谱法测定水中碘化物的不确定度评定方法,根据其测定方法和测定程序,对各不确定度分量进行评定和计算。通过不确定度评定得出标准曲线计算引入的不确定度最大,本次实验测量结果为0.102 mg/L,用离子色谱测定水中碘化物的扩展不确定度为:U=0.030 mg/L,k=2。

We reported a method for evaluating the uncertainty for the measurement of Iodide in water based on Ion Chromatography according to JJF 1059.1-2012. The components of the uncertainty were evaluated and calculated. The major effective factors of the uncertainty come from preparation of calibration curve. The value of the uncertainty in our measurement was 0.030 mg/L （k=2）. K