| 光度法快速测定铌铁中铌 |
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| 引用本文： | 王际祥,薛明浩,王俊秀. 光度法快速测定铌铁中铌[J]. 冶金标准化与质量, 2008, 46(1): 7-8 |
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| 作者姓名： | 王际祥 薛明浩 王俊秀 |
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| 作者单位： | 1. 莱芜钢铁集团有限公司技术研发中心,山东,莱芜,271104
2. 山东鲁丽钢铁有限公司,山东,寿光,262724 |
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| 摘 要： | 铌铁易溶于硝酸和氢氟酸的混合酸中，当用酸分解试样时，铌极易水解析出沉淀；但在氢氟酸存在下，又能成为可溶性络合物（H2NbF7），所以在分析方法中，常用此特性，使铌保持于溶液中而用光度法进行铌的测定，实现光度法高速分析铌铁中的铌。
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| 关 键 词： | 铌铁 氢氟酸 可溶性络合物 抗坏血酸 二甲酚橙光度法 |
| 文章编号： | 1003-0514(2008)01-0007-02 |
| 修稿时间： | 2007-12-11 |
Determination of niobium content in niobite by spectrophotometric |
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| WANG Ji-xiang,XUE Ming-hao,WANG Jun-xiu. Determination of niobium content in niobite by spectrophotometric[J]. Metallurgical Standardization & Quality, 2008, 46(1): 7-8 |
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| Authors: | WANG Ji-xiang XUE Ming-hao WANG Jun-xiu |
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| Affiliation: | WANG Ji-xiang (The center R & D of Technology,Laiwu Iron & Steel Co.,Ltd,Laiwu 271104,China)XUE Ming-hao WANG Jun-xiu (Sh,ong Luli Iron & Steel Co.,Shouguang 262724,China) |
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| Abstract: | Ferroniobium is apt to be dissolved in the mixture of nitric acid and hydrofluoric acid.When using nitric acid to dissolve ferroniobium sample,niobium is very apt to occur hydrolytic precipitation,but under the presence of hydrofluoric acid,it can become soluble complex(H_2NbF_7),so in the niobium analysis,usually to use this characteristic to keep niobium being solved in the solution so as to determine niobium with photometry,realizing rapid determination of niobium in ferroniobium with photometry. |
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| Keywords: | ferroniobium hydrofluoric acid soluble complex ascorbic acid xylenol orange spectrophotometry |
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