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机构地区:[1]福建省农产品质量安全检验检测中心,福建福州350003
出 处:《中国兽药杂志》2006年第4期55-57,共3页Chinese Journal of Veterinary Drug
摘 要:应用测量不确定度评定与表达的理论,以标定碘滴定液为例,分析了影响滴定液浓度测量不确定度的因素,包括标定过程中测量重复性、天平、滴定管、基准物纯度等因素,计算得出碘滴定液浓度测定结果的扩展不确定度为0.000 18 mol/L。分析表明滴定管的准确度是影响滴定液浓度测量不确定度的主要因素。The impact factors in the uncertainty of measurement of normal solution contentration were analysed using the theory of assessment and expression of uncertainty monitoring with the example of the determination of iodine solution concentration. The factors effecting on the uncertainty of measurement in the determination of the normal solution concentration were evaluated, including repeatability of measurement results, balance, burette, the purity of standard reagent, etc. The expanded uncertainty was 0. 000 18 mol/L. The results showed that the accuracy of the burette was the main factor influencing the uncertainty of measurement in the determination of normal solution concentration.
分 类 号:TQ460.72[医药卫生—药物分析学]
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