| Bi(Ⅲ)-Cu(Ⅱ)-NTu-Ⅰ~-体系光度法测定微量Bi |
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| 引用本文： | 马东兰,左天明,汤俊明.Bi(Ⅲ)-Cu(Ⅱ)-NTu-Ⅰ~-体系光度法测定微量Bi[J].河南师范大学学报(自然科学版),1991(4). |
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| 作者姓名： | 马东兰 左天明 汤俊明 |
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| 作者单位： | 河南师范大学化学系，河南师范大学化学系，河南师范大学分析测试中心 河南省进出口公司商检局 |
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| 摘 要： | 本文提出了将试剂 N-烯丙基-N′-(对苯磺酸钠)硫脲用于Bi(Ⅲ)-Cu(Ⅱ)-NTu-I(?)异金属四元体系中,光度测定微量 Bi 的新方法.实验结果表明:该法显色快、稳定性好、选择性高,优于经典的碘化物法和硫脲法.在水相中可直接测定,操作简单.铋浓度在0～110μg/mL 范围内成直线关系,ε≈1×10~4. 对回收实验和合成样品分析,均获得满意的结果.
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| 关 键 词： | N-烯丙基-N′-(对苯磺酸钠)硫脲 铋 光度法 |
SPECTROPHOTOMETRIC DETERMINATION OF TRACE BISMUTH IN BISMUTH(Ⅲ)-COPPER(Ⅱ)-NTu-IODIDE ION SYSTEM |
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| Ma Donglan Zuo Tianming Tang Junming.SPECTROPHOTOMETRIC DETERMINATION OF TRACE BISMUTH IN BISMUTH(Ⅲ)-COPPER(Ⅱ)-NTu-IODIDE ION SYSTEM[J].Journal of Henan Normal University(Natural Science),1991(4). |
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| Authors: | Ma Donglan Zuo Tianming Tang Junming |
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| Institution: | Department of Chemistry |
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| Abstract: | This paper gives a new method of spectrophotometric determination of trace Bismuth in Bismuth(Ⅲ)-Copper(Ⅱ)-NTu-Iodide Ion system.The proper conditions for analysis are studied.The experiment has proved that Beer's law is obeyed from zero to 110ppm Bismuth in determining Bismuth at the wave langth of 454. 8nm,about pH 1. 5. Molar absorption coefficient is ε≈1×10~4. The method shows corlor rapidity,high selectivity,high stability,and good reproduction.It is straightly determined in aquo
phase.The staisfactory results were obtained in determining synthetical samples and recoveries with the method. |
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| Keywords: | N-allyl-N'-(sodium p-benzene sulfonate)thioure (NTu) spectrophotometric bismuth |
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