| 新试剂DCOBAQS与铝的荧光反应性能研究及分析应用 |
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| 引用本文： | 吴芳英,黄坚峰. 新试剂DCOBAQS与铝的荧光反应性能研究及分析应用[J]. 光谱学与光谱分析, 2001, 21(1): 92-94 |
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| 作者姓名： | 吴芳英 黄坚峰 |
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| 作者单位： | 南昌大学应用化学研究所, |
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| 基金项目： | 江西省自然科学基金资助项目 |
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| 摘 要： | 本文研究了新试剂 7 (2 ,4 二羧甲氧基 5 羧基苯偶氮 ) 8 羟基喹啉 5 磺酸 (简称DCOBAQS)与铝(Ⅲ )形成的络合物的荧光性能。在 pH 5 5 4的HAc NaAc体系中试剂与铝形成 2∶1型强荧光配合物 ,其 λex=5 10nm、λem =5 72nm ,铝 (Ⅲ )含量在 0～ 0 0 4μg·mL-1范围内与荧光强度呈线性关系 ,方法检出限为0 5 5 7ng·mL-1。本文用此方法对茶叶中痕量铝 (Ⅲ )进行测定 ,结果满意。
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| 关 键 词： | 荧光分析法 铝 茶叶 二羧甲氧基－羧基苯偶氮 羟基喹啉－磺酸 痕量分析 |
| 修稿时间： | 1999-06-22 |
Study on Fluorescent Properties and Application of the New Reagent DCOBAQS with Aluminium |
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| Fangying WU,Jianfeng HAUNG. Study on Fluorescent Properties and Application of the New Reagent DCOBAQS with Aluminium[J]. Spectroscopy and Spectral Analysis, 2001, 21(1): 92-94 |
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| Authors: | Fangying WU Jianfeng HAUNG |
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| Affiliation: | Institute of Applied Chemistry, Nanchang University, 330047 Nanchang. |
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| Abstract: | A new fluorometric method is reported for the determination of aluminium, based on the complex forming of 7-[(2,4-dicarboxymethyl-5-carboxybenezene)azo]-8-hydroxyquinoline-5-sulfonic (DCOBAQS) with aluminium. The complex was formed at pH 5.54 with lambda ex/lambda em = 510 nm/572 nm. A better line relationship curve was obtained over the range of 0-0.04 microgram.mL-1 Al(III), and the detection limit for Al(III) is 0.557 ng.mL-1. The method is applied to determination aluminium in tea with satisfactory results. |
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| Keywords: | Fluorescence Aluminium Tea 7-[(2 4-dicarboxymethyl-5-carboxybenezene)azo]-8-hydroxyquinoline-5-sulfonic |
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