用原子吸收法测定水中铜的不确定度

Determination of Uncertainty of Copper in Water by Atomic Absorption Spectrometric Method

[目的]为减少实验误差,提高检测结果精确度,评定水中铜的不确定度。[方法]分析水中铜不确定度的来源,通过计算得出该法测定水中铜的扩展不确定度。[结果]测量结果表明扩展不确定度U95=0.08 mg/L,适用于每个水样的检测结果。[结论]方法简便,适合于每一个样本的检测结果,可参考用于水中某些检测参数的不确定评定。

[Objective] To reduce experimental error and increase accuracy of test results to assess the uncertainty of copper in water.[Methods]Source of uncertainty of copper in water was analyzed,determined by calculating the expanded uncertainty of copper in water.[Results]The results showed that the expand uncertainty was 0.08mg/L and the method was fit for all kinds of samples results.[Conclusion]The method is easy and fit for all kinds of samples results and the method is for reference to assessment on uncertainty of other parameters determination in water.