| 硫氰酸盐光度法测定高温合金钢中钼、钨 |
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| 引用本文： | 陈万明,伍盈盈. 硫氰酸盐光度法测定高温合金钢中钼、钨[J]. 广州化工, 2011, 39(17): 80-82 |
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| 作者姓名： | 陈万明 伍盈盈 |
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| 作者单位： | 贵州工业职业技术学院化学与材料工程学院,贵州贵阳,550008 |
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| 摘 要： | 硫氰酸盐光度法是测定钼、钨的经典方法。试样经溶解后,用氯化亚锡作还原剂,在硫酸介质中,Mo（Ⅵ）被还原为Mo（Ⅴ）,然后与SCN-形成显桔红色配合物,而钨不被还原,用强还原剂（如三氯化钛）钼可被还原到更低价,而不与SCN-显色：而钨被还原为五价与SCN-显色;因此在同一溶液中测定钨、钼。本文就该法的测定做进一步的阐述。
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| 关 键 词： | 高温合金钢 硫氰酸盐光度法 钼、钨 |
Determination of Thiocyanate Salt Spectrophotometry in High Temperature Alloy Steel Molybdenum and Tungsten |
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| CHEN Wan-ming,WU Ying-ying. Determination of Thiocyanate Salt Spectrophotometry in High Temperature Alloy Steel Molybdenum and Tungsten[J]. GuangZhou Chemical Industry and Technology, 2011, 39(17): 80-82 |
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| Authors: | CHEN Wan-ming WU Ying-ying |
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| Affiliation: | (College of Chemistry and Materials Engineering,Guizhou Industrial Polytechnic College,Guizhou Guiyang 550008,China) |
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| Abstract: | Thiocyanate salt photometric method was the classical method to determine tungsten.The sample after dissolving,used as a reductant,and in ferrie sulfate-potassium thiosulfate sulphuric acid medium,Mo（Ⅵ） was reduced to Mo（Ⅴ）.The SCN-formation complexes,and showed the soiled W would not be restored,with strong reducing agent（such as three chlorinated titanium）.Mo can be lower reduction to,but not with the SCN-showed color,and W was reduced to five price and the SCN-showed color.So in the same solution,W and Mo can be determined,and the further explanation of determination was presented. |
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| Keywords: | high temperature alloy steel thiocyanate salt photometric method Mo W |
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