摘要
体系认证、资质认定和实验室认可都要求实验室具备评定测量不确定度的能力。参照GB／T6730．65-2009{铁矿石全铁含量的测定三氯化钛还原重铬酸钾滴定法（常规方法）》和新版JJFl059．1—2012{测量不确定度评定与表示》，对三氯化钛还原重铬酸钾滴定法测定铁矿石中全铁的不确定度的评定过程、评定方法进行了研究。分析测量过程中不确定度来源，量化不确定度分量，求出合成不确定度和扩展不确定度，给出测定结果的表示式。
Laboratory Accreditation, Qualification Authentication and System Certification require testing laboratories have ability to evaluate the measurement uncertainty. According to 《 Iron ores-Determination of total iron content-Titanium（ Ⅲ ） chloride reduction potassium dichromate titration methods （routine methods） 》 and 《Evaluation and Expression of Uncertainty in Measurement》 . It is studied evaluating process and method for uncertainty in determination of total iron content in iron ores with Titanium（ Ⅲ） chloride reduction potassium dichromate titration methods. Analyzing the sources of uncertainty in the entire course of the determination and calculating each component of uncertainty, the combined uncertainty and expanded uncertainty were obtained, and the mathematical expression of the determination result the lead content was also given.
出处
《冶金信息导刊》
2017年第6期27-30,共4页
Metallurgical Information Review
关键词
滴定法
铁矿石
全铁
不确定度
titration method
iron ore
total iron
uncertainty
