| 双波长分光光度法同时测定铌和钽 |
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| 引用本文： | 倪永年,黄国平.双波长分光光度法同时测定铌和钽[J].高等学校化学学报,1989,10(1):106-108. |
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| 作者姓名： | 倪永年 黄国平 |
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| 作者单位： | 江西大学化学系 |
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| 摘 要： | 双波长分光光度法测定混合组分已被广泛应用,目前提出的有等吸收或K-系数双波长法、双显色双波长法及双峰双波长法等。由于铌钽性质相似,不易完全分离,已有人提出同时分析的方法。最近,文献报道了以5-Br-PADAP为显色剂用等吸收
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| 关 键 词： | 双波长分光光度法 同时测定 铌和钽 5-Br-PADAP |
| 收稿时间： | 1987-06-22 |
Simultaneous Determination of Niobium and Tantalum with Dual-Wavelength Spectrophotometry |
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| Ni Yongnian,Huang Guoping.Simultaneous Determination of Niobium and Tantalum with Dual-Wavelength Spectrophotometry[J].Chemical Research In Chinese Universities,1989,10(1):106-108. |
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| Authors: | Ni Yongnian Huang Guoping |
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| Institution: | Department of Chemistry, Jiangxi University, Nanehang |
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| Abstract: | A dual wavelength spectrophotometric method for the simultaneous determination of niobium and tantalum is presented. This method is based on measuring the absorbance of colored products of niobium and tantalum with 2-(5-bromo-2-pyridylazo) -5-(djethylamino)phenol at two wavelengths. The reference wavelength is at the absorbance peak of the reagent.This method can be used to calibrate the deviations of absorbance from the Beer's law and is probably better than the traditional dual-wavelength spectrophotometries. Several synthetic samples were determined and the results are satisfactory by comparison with the standard addition values. |
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| Keywords: | Dual-wavelength spectrophotometry Simultaneous determination Niobium and tantalum 5-Br-PADAP |
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