| 5-(4-磺基-1-萘偶氮)-8-羟基喹啉离解常数及其与镱显色反应分光光度法的研究 |
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| 引用本文： | 刘二保,韩素琴,梁建功,郭菊红,郑林艳,郭满栋.5-(4-磺基-1-萘偶氮)-8-羟基喹啉离解常数及其与镱显色反应分光光度法的研究[J].山西师范大学学报,1999(3). |
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| 作者姓名： | 刘二保 韩素琴 梁建功 郭菊红 郑林艳 郭满栋 |
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| 作者单位： | 山西师范大学化学系 |
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| 摘 要： | 本文用分光光度法测定了显色剂5-（4-磺基-1-萘偶氮）-8-羟基喹啉离解常数，并研究了该显色剂与Yb的络合情况．结果表明：在pH为2－12之间，该显色剂共有三种存在形式：H2L（NH＋）、HL-、L2-，它的离解常数为Ka1＝1.61×10-5，Ka2＝4．10×10-9.在pH＝9．60附近，该显色剂可与Yb3＋形成3：1、2：1、1：1的配合物．
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| 关 键 词： | 5-（4-磺基-1-萘偶氮）-8-羟基喹啉 离解常数 分光光度法 Yb |
Spectrophotometric Studies on the Constant of Dissociation on 5-(4-Sulfo-1-Naphthy Lazo)-8-Hydroxy Quinoline and Its Chromogenic Reaction with Ytterbium |
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| Liu Erbao, Han Shuqing, Liang Jiangong, Guo Juhong, Zheng Linyan, Guo Mandong.Spectrophotometric Studies on the Constant of Dissociation on 5-(4-Sulfo-1-Naphthy Lazo)-8-Hydroxy Quinoline and Its Chromogenic Reaction with Ytterbium[J].Journal of Shanxi Teachers University,1999(3). |
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| Authors: | Liu Erbao Han Shuqing Liang Jiangong Guo Juhong Zheng Linyan Guo Mandong |
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| Institution: | Liu Erbao; Han Shuqing; Liang Jiangong; Guo Juhong; Zheng Linyan; Guo Mandong |
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| Abstract: | A Spectrophotometric method has been used to study the constant of dissociation on 5-(4-sulfo-1-naphthy lazo)-8-hydroxy quinoline and its chromogenic reaction with Ytterbium at pH = 2-12. In the experimental conditions, the chromogenic reagent has three shapes: H2L(NH- ) , HL-, L2-, its constant of dissociation is: Ka1 =1. 61 X 10-5, Ka2 =4. 1 X 10-9. At pH= 9. 6 nearby, it reacts with Ytterbium to form 3: 1, 2: 1, 1: 1 complex. |
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| Keywords: | 5-(4-sulfo-1-naphthy lazo)-8-hydroxy quinoline Constant of dissociation Spectrophotometric method Ytterbium |
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