自动电位滴定法测定钙片中钙含量的不确定度评定
自动电位滴定法测定钙片中钙含量的不确定度评定
目的评估自动电位滴定法测定钙片中钙含量的不确定度。方法对自动电位滴定法测定钙片中钙含量的全过程进行分析, 建立数学模型, 分析各不确定度分量。根据JJF 1059.1-2012《测量不确定度评定与表示》对各个不确定度分量进行评估, 计算扩展不确定度。结果自动电位滴定法测定某品牌钙片中钙含量为(17.85±0.17) g/100 g, k=2。结论该方法不确定度较低, 结果可靠。
ObjectiveTo evaluate the uncertainty for determination of calcium content in calcium tablets by automatic potentiometric titration. MethodsThe whole process of determination of calcium content in calcium tablets by automatic potentiometric titration was analyzed, a mathematical model was established, and various uncertainty components were analyzed. According to JJF 1059.1-2012 Evaluation and expression of measurement uncertainty, each uncertainty component was evaluated and the extended uncertainty was calculated. ResultsThe content of calcium in a brand calcium tablet determined by automatic potentiometric titration was (17.85±0.17) g/100 g, k=2. ConclusionThe uncertainty of this method is low and the results are reliable.
标题:自动电位滴定法测定钙片中钙含量的不确定度评定
英文标题:Uncertainty evaluation for the determination of calcium content in calcium tablets by automatic potentiometric titration
作者:
李锦 河北省疾病预防控制中心
秦晓娟 河北省疾病预防控制中心
付志斌 河北省疾病预防控制中心
燕阔 河北省疾病预防控制中心
刘玉欣 河北省疾病预防控制中心
卢振敏 河北省疾病预防控制中心
常凤启 河北省疾病预防控制中心
高佳 河北省疾病预防控制中心
中文关键词:自动电位滴定法,钙片,含量测定,不确定度,
英文关键词:automaticpotentiometric titration,calcium tablets,content determination,uncertainty,
发表日期:2020-03-30
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