摘要
分析碘量法测定水中溶解氧含量测量不确定度的影响因素,对测量不确定度各个分量的评定结果表明,测量重复性的不确定度分量最大,其次是样品溶液的体积、滴定溶液的体积和滴定溶液的浓度等不确定度分量,计算得到水中溶解氧含量测定结果的合成不确定度为0.06mg/L,扩展不确定度为0.12mg/L。
The influencing factors of the uncertainty of measurement in the determination of the dissolved oxygen content in water are discussed. The components of the uncertainty of measurement are analyzed. The maximum component is the repeatability in turn. Next component is the volume of sampling solution, the volume and the concentration of titrating. By calculation, the standard uncertainty and the expanded uncertainty of dissolved oxygen reported are 0. 06 mg/L and 0. 12 mg/L respectively.
出处
《化学分析计量》
CAS
2003年第6期5-7,共3页
Chemical Analysis And Meterage
