| 7-(1-苯偶氮)-8-羟基喹啉-5-磺酸-曲拉通X-100双波长分光光度法测定微量铟 |
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| 引用本文： | 刘玉亭,宋桂兰,王兴恩. 7-(1-苯偶氮)-8-羟基喹啉-5-磺酸-曲拉通X-100双波长分光光度法测定微量铟[J]. 分析试验室, 1999, 18(3): 4 |
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| 作者姓名： | 刘玉亭 宋桂兰 王兴恩 |
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| 作者单位： | 山东建材学院应用化学系,济南,250022 |
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| 摘 要： | 研究了７－（１－苯偶氮）－８－羟基喹啉－５－磺酸与铟的显色反应及分析应用，在曲拉通Ｘ－１００存在下，于ｐＨ４．５的ＮａＡｃ－ＨＡｃ缓冲介质中，铟与题示试剂形成组成比为１∶３的黄色配合物，最大吸收波长为４４０ｎｍ，表观摩尔吸光系数为３．８６×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，同时在５５０ｎｍ呈现负峰，用双峰双波长法测定铟的表观摩尔吸光系数为７．３３×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，灵敏度为单波长法的１．９倍，线性范围为０～０．６ｍｇ／Ｌ，该法用于硫硒化锌基陶瓷颜料及镀膜玻璃中铟的测定，结果满意。
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| 关 键 词： | 7-(1-苯偶氮)-8-羟基喹啉-5-磺酸 铟 曲拉通X-100 双波长分光光度法 陶瓷颜料 镀膜玻璃 |
| 文章编号： | 1000-0720(1999)03-061-04 |
| 修稿时间： | 1998-03-31 |
A Dual-Wavelength Spectrophotometric Method for Determination of Indium With 7-(1-phenylazo)-8-Hydroxy-Quinoline-5-Sulfonic Aicd and Triton X-100 |
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| LIU Yu-ting,SONG Gui-lan,WANG Xing-en. A Dual-Wavelength Spectrophotometric Method for Determination of Indium With 7-(1-phenylazo)-8-Hydroxy-Quinoline-5-Sulfonic Aicd and Triton X-100[J]. Chinese Journal of Analysis Laboratory, 1999, 18(3): 4 |
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| Authors: | LIU Yu-ting SONG Gui-lan WANG Xing-en |
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| Abstract: | highly sensitive color reaction of indium() with 7(1phenylazo)8hydroxyquinoline5sulfonic acid (HPAHQS)in the presence of Triton X100 was studied. In HAcNaAc buffer medium(pH4.5), HPAHQS reacts with Indium to form a yellow complex with the molar absorptivity of 3.86104Lmol-1cm-1 at 440nm,and a negative peak at 550nm. The apparent molar absorptivity(440550nm)is 7.33104Lmol-1cm-1 by dualwavelength measurement, which is approximately two times that by singlewavelength measurement at 440nm.Beer's law is obeyed in the range of 00.6mg/L for indium.The developed method has been used for the determination of indium in sulfselenium zinc ceramic pigment and plating membrane with satisfactory results. |
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| Keywords: | phenylazo)8hydroxyquinoline5sulfonic acid Indium Triton X100 dualwavelength Spectrophotometry |
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