矾土中二氧化钛含量的不确定度评定  

Uncertainty Evaluation for the Determination of Titanium Dioxide in Bauxite by Hydrogen Peroxide Spectrophotometry

作　　者：向吉锋[1] 方朗[1] 张欣欣[1] 王丽[1] 

机构地区：[1]中钢集团天津地质研究院有限公司地质矿产测试中心,天津300181

出　　处：《山东化工》2015年第11期66-67,69,共3页Shandong Chemical Industry

摘　　要：对过氧化氢法测定矾土中二氧化钛的不确定度进行评估,建立了数学模型,认为不确定度主要来源于工作曲线的拟合与配制。当二氧化钛含量为3.76%时,其扩展不确定度为0.12%(k=2)。The measurement uncertainty of titanium dioxide in bauxite by hydrogen peroxide spectrophotometry was evaluated and the mathematical model was also established. The main sources of measurement uncertainty came from the fitting and preparation of calibration curve. When the content of titanium dioxide was 3.76% ,the expanded uncertainty was 0. 12% （k=2）.

关 键 词：不确定度 矾土 二氧化钛 过氧化氢光度法 

分 类 号：O657.3[理学—分析化学]