市政工程水泥中氯离子含量测定的不确定度评定

The Uncertainty Evaluation of the Chloride Ion Content Determination in Cement in Municipal Engineering

文章以某市政工程为例,针对其使用的水泥展开了氯离子含量测定,分别对应用硫氰酸铵滴定法和电位滴定法测定水泥中氯离子含量结果的不确定度较高的原因进行分析,在此基础上分析如何更好地减少不确定度,最后阐述了水泥中氯离子含量测定的不确定度评定落实流程,以供相关人员参考。

Taking a municipal engineering as an example,this paper carried out the determination of chloride ion content in the used cement.The reasons for the high uncertainty of the determination of chloride ion content in cement by ammonium thiocyanate titration and potentiometric titration were analyzed respectively.On this basis,how to better reduce the uncertainty was analyzed.Finally,the implementation process of uncertainty evaluation for the determination of chloride ion content in cement was described for the reference of relevant personnel.