摘要
在研究了Tiron与钼(Ⅵ)、钨(Ⅵ)、钒(Ⅴ)的显色反应基础上,对采用卡尔曼滤波分光光度法(简称KF法)同时测定钼、钨、钒三组分混合体系进行了探讨。对10份不同比例的钼、钨、钒标准混合液的测定,平均回收率分别为103.4％、102.0％和99.31％。标准偏差分别为3.48％、1.15％及2.16％。应用于工具钢标样及杂多酸合成样的分析,获得满意结果。
The ultraviolet spectrophotometry based on Kalman Filtering(KF) was applied to the multaneous determination of molybdenum (VI), tungsten (VI) and vanadium (V) without prem nary separation. The average recoveries of molybdenum(VI), tungsten (VI) and vanadium in their synthetic mixtrues are 103.3%, 102.0% and 99.31% with standard deviations of 3.18 1.15% and 2.16% (n=10), respectively. The recommended method has been used for the simultaneous determination of molybdenum, tungsten and vanadium in steels and heteropoly compounds sam ples with satisfactory results.
关键词
分光光度法
测定
钼
钨
钒
Kalman filtering spectrophotometry
simultaneous determination
molybdenum
tungsten
vanadium
