| 钨-3,5二溴水杨基荧光酮-CTMAB-Tween80多元配合物的分光光度法研究 |
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| 引用本文： | 王军,吕文英,李全民,杨林.钨-3,5二溴水杨基荧光酮-CTMAB-Tween80多元配合物的分光光度法研究[J].光谱学与光谱分析,2004,24(8):995-998. |
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| 作者姓名： | 王军 吕文英 李全民 杨林 |
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| 作者单位： | 河南师范大学化学与环境科学学院,河南省环境污染控制重点实验室,河南,新乡,453002;广东工业大学环境科学与工程学院,广东,广州,510090 |
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| 基金项目： | 国家自然科学基金 (2 9971 0 0 9)资助项目 |
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| 摘 要： | 在混合表面活性剂溴化十六烷基三甲铵 (CTMAB)和吐温 80 (Tween80 )存在下 ,研究了 3,5 二溴水杨基荧光酮 (DBSAF)与钨 (Ⅵ )显色反应的光度特性。在 0 6 0mol·L-1HCl介质中 ,钨 (Ⅵ )与DBSAF及表面活性剂形成胶束络合物 ,采用混合表面活性剂使增溶增敏作用更为显著 ,络合物表观摩尔吸光系数ε =2 6 4× 10 5L·mol-1·cm-1,λmax =5 2 7nm。用摩尔比法和连续变换法测得钨 (Ⅵ )与DBSAF所形成的络合物化学计量比为 1∶2。钨 (Ⅵ )含量在 0～ 4 0 0 μg·L-1范围服从比尔定律 ,拟定分析方法可直接用于合金钢样品中微量钨的测定
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| 关 键 词： | 钨 3 5-二溴水杨基荧光酮 分光光度法 |
| 文章编号： | 1000-0593(2004)08-0995-04 |
| 修稿时间： | 2004年2月28日 |
Spectrophotometric Study on the Color Reaction of Multicomponent Complex of Tungsten-3,5-Dibromosalicyl Fluorone-CTMAB-Tween80 |
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| Jun Wang,Wen-Ying Lü,Quan-Min Li,Lin Yang.Spectrophotometric Study on the Color Reaction of Multicomponent Complex of Tungsten-3,5-Dibromosalicyl Fluorone-CTMAB-Tween80[J].Spectroscopy and Spectral Analysis,2004,24(8):995-998. |
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| Authors: | Jun Wang Wen-Ying Lü Quan-Min Li Lin Yang |
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| Institution: | College of Chemistry and Environmental Science, The Key Laboratory of Environmental Pollution Control Technology of Henan Province, Henan Normal University, Xinxiang 453002, China. |
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| Abstract: | In the presence of mixed surfactant cetyl trimethyl ammonium bromide(CTMAB) and Tween80, the photometric analysis properties of color reaction of 3,5-dibronosalicyl fluorone (DBSAF) with tungsten(VI) were studied. The experimental result showed that tungsten(VI) reacted with DBSAF to form a micelle complex with a maximum absorption at 527 nm in a 0.60 mol x L(-1) hydrochloric acid medium. The mixed surfactant remarkably improved the sensitivity of the method and the dissolubility of the complex. The apparent molar absorptivity of the complex is 2.64 x 10(5) L x mol(-1) x cm(-1) at 527 nm. Tungsten (VI) reacted with DBSAF to form a complex with a stoichiometric ratio of 1:2, which was determined by mole ratio method and continual method of transformation, respectively. Beer's law was obeyed in the range of 0-400 microg tungsten (VI) per L. The proposed method has been applied to the determination of trace amount of tungsten in alloy steel samples. |
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