| 5‘—硝基—水杨基荧光酮—溴化十六烷基三甲胺荧光猝灭法测定？… |
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| 引用本文： | 龚波林,龚国权.5‘—硝基—水杨基荧光酮—溴化十六烷基三甲胺荧光猝灭法测定？…[J].光谱学与光谱分析,1999,19(4):578-580. |
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| 作者姓名： | 龚波林 龚国权 |
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| 作者单位： | [1]宁夏大学化学系 [2]兰州大学化学系 |
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| 摘 要： | 本文基于Ｚｒ（Ⅳ）５‘－硝基－水杨基荧光酮－溴化十六烷基三甲铵（ＣＴＭＡＢ）体系的荧光猝灭效应，提出一种测定微量锆的新荧光分析方法。在０．８－１．２--ｍｏｌ／Ｌ的Ｈ２ＳＯ４介质中，ＣＴＭＡＢ存在下，锆与５’－Ｎ－ＳＡＦ生成组成比为１：４的橙红色络合物。
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| 关 键 词： | 荧光光度法 锆 SAF CTMAB |
Fluorescence quenching method for the determination of trace zirconium with 5'-nitor-salicylfluorone and hexadecyltrimethylammonium bromide] |
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| B Gong,G Gong.Fluorescence quenching method for the determination of trace zirconium with 5'-nitor-salicylfluorone and hexadecyltrimethylammonium bromide][J].Spectroscopy and Spectral Analysis,1999,19(4):578-580. |
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| Authors: | B Gong G Gong |
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| Institution: | Department of Chemistry Chemistry, Ningxia University, 750021 Yinchuan. |
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| Abstract: | A new fluorometric method has been developed for the determination of trace zirconium, based on the fluorescence quenching effect of Zr (IV)-5'-nitro-salicylfluorone (5'-N-SAF)-hexadecyltrimethylammonium bromide (CTMAB). In the H2SO4 medium and in the presence of CTMAB Zr (IV) reacts on 5'-N-SAF to form a 14 orange complex. Its maximum excitation wavelengths are 475 and 505 nm,and the maximum emission wavelength is 525 nm. The linear range is 2.0-80 microg/L, and the detection limit is 2.0 microg/L. The method has been applied to the direct determination of trace Zr (IV) in the aluminium alloy reference sample with satisfactory results. |
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