| 树脂负载固相反射散射吸光光度法测定铌 |
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| 引用本文： | 赵中一,韩峭峰,罗菊仙,张转勇.树脂负载固相反射散射吸光光度法测定铌[J].理化检验(化学分册),2001,37(1):31-33. |
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| 作者姓名： | 赵中一 韩峭峰 罗菊仙 张转勇 |
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| 作者单位： | 中国地质大学应用化学系, |
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| 摘 要： | 氯磺酚S是光度法测铌的最佳试剂之一，选用717型阴离子交换树脂富集试液中铌与氯磺酚S的配合物，用自行设计的反射散附件与722型分光光度计联用直接测定树脂相上的反射散射值AR，设计了一种新的固相反射散射光度法。并将方法用于低合金钢、化探样、磁铁矿样品中低含量铌的测定，取得较好的效果。
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| 关 键 词： | 固相反射散射吸光光度法 铌 氯磺酚S 测定方法 |
| 文章编号： | 1001-4020(2001)01-0031-03 |
| 修稿时间： | 1999年12月18 |
RESIN-LOADING SOLID PHASE REFLECTIVE DIFFUSION PHOTOMETRIC DETERMINATION OF NIOBIUM |
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| ZHAO Zhong-Yi,HAN Qiao-feng,LOU Ju-xian,ZHANG Zhuan-yong.RESIN-LOADING SOLID PHASE REFLECTIVE DIFFUSION PHOTOMETRIC DETERMINATION OF NIOBIUM[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2001,37(1):31-33. |
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| Authors: | ZHAO Zhong-Yi HAN Qiao-feng LOU Ju-xian ZHANG Zhuan-yong |
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| Abstract: | A solid phase reflective diffusion photometric method for the determination of niobium is studied in this paper. Chlorosulfophenol S is used as a chromogenic reagent for Nb(V), and the complex formed in a HCltartaric acid medium is adsorbed on a definite amount of 717 anion exchange resin. The reflective absorbance AR of the anion exchange resin is then determined at a wavelength of 630nm using a self-made reflective diffusion accessory installed with the 722 spectrophotometer. The method has been used in the determination of niobium in the
alloy steel and in geological samiples with satisfactory results. |
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| Keywords: | Solid phase reflective diffusion photometry Niobium Chlorosulfophenol S |
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