| Synthesis of 1 -（5 - nitro - 3 - phenylazophenyl）-triazene and Its Color Reaction with Cobalt |
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| 引用本文： | 章汝平,林丹丽.Synthesis of 1 -（5 - nitro - 3 - phenylazophenyl）-triazene and Its Color Reaction with Cobalt[J].东华大学学报(英文版),2007,24(4):539-541. |
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| 作者姓名： | 章汝平 林丹丽 |
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| 作者单位： | ZHANG Ru-ping（Department of Chemistry, Longyan College, Longyan 364000, China） ;
LIN Dan-li（Research Center for Analysis and Measurement, Donghua University, Shanghai 200051, China） ; |
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| 摘 要： | A new chromogenie reagent, 1 -(5-nitro- 3-benzopsendothiazde)- 3 -(4-phenylazophenyl)-triazene (NBPTPAPT) has been synthesized and used as a sensitive reagent for the spectrophotometric determination of cobalt.In the presence of Tween-80, the reagent with Co (Ⅱ)forms a yellow complex (1 2) in the buffer solution of Na2B4O7-NaOH at pH 10.54. The apparent molar range of 0-240 μg/ L for Co (Ⅱ) by dual-wavelength spectrophotometry. Trace cobalt in vitamin B12 and tea samples has been determined with satisfactory results.
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| 关 键 词： | 1-（5-硝基-3-苯并拟噻唑基）三氮烯 显色反应 钴 化学反应动力学 |
Synthesis of 1-(5-nitro-3-benzopseudothiazolyl)-3-(4-phenylazophenyl)-triazene and Its Color Reaction with Cobalt |
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| ZHANG Ru-ping,LIN Dan-li.Synthesis of 1-(5-nitro-3-benzopseudothiazolyl)-3-(4-phenylazophenyl)-triazene and Its Color Reaction with Cobalt[J].Journal of Donghua University,2007,24(4):539-541. |
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| Authors: | ZHANG Ru-ping LIN Dan-li |
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| Institution: | 1. Department of Chemistry, Longyan College, Longyan 364000, China
2. Research Center for Analysis and Measurement, Donghua University, Shanghai 200051, China |
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| Abstract: | A new chromogenie reagent, 1 -(5-nitro- 3-benzopsendothiazde)- 3 -(4-phenylazophenyl)-triazene (NBPTPAPT) has been synthesized and used as a sensitive reagent for the spectrophotometric determination of cobalt.In the presence of Tween-80, the reagent with Co (Ⅱ)forms a yellow complex (1 : 2) in the buffer solution of Na2B4O7-NaOH at pH 10.54. The apparent molar range of 0-240 μg/ L for Co (Ⅱ) by dual-wavelength spectrophotometry. Trace cobalt in vitamin B12 and tea samples has been determined with satisfactory results. |
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| Keywords: | 1-(5-nitro-3-benzopseudothiazolyl)-3-(4-phenylazophenyl)-triazene color reaction Cobalt |
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