The influence of molybdenum on thiocyanate spectrophotometric determination of tungsten

被引：0
|
作者：
Huo, Guangsheng [1 ]
Zeng, Luqi
Liao, Chunhua
Wu, Qian
Yang, Qiang
机构：
[1] Cent S Univ, Sch Met & Environm, Changsha, Hunan, Peoples R China
来源：
ADVANCES IN ENERGY SCIENCE AND EQUIPMENT ENGINEERING | 2015年
关键词：
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The influence of molybdenum on thiocyanate spectrophotometric determination of tungsten was investigated. The error in determination of tungsten in molybdate-tungstate mixed solution was stated through analysing the absorbance-wavelength spectrogram of the thiocyanate colour solution. The results show that the determination error of tungsten > 17% to the solution with Mo/WO3 (mass concentration ratio) > 3, as a result of the overlap of absorption peak of Mo-SCN- and W-SCN- complex. A calibration method was proposed, through which the determination error of tungsten was less than 5% to the solution with Mo/WO3 < 15.
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页码：371 / 374
页数：4
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