| 利用salen型荧光探针测定Cr3+ |
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| 引用本文： | 董静,于洁,冯素玲,王爱军.利用salen型荧光探针测定Cr3+[J].分析试验室,2012(9):85-88. |
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| 作者姓名： | 董静 于洁 冯素玲 王爱军 |
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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;新乡医学院化学教研室 |
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| 摘 要： | 研究了salen型席夫结构的荧光探针N,N’-二(2-羟基-1-萘甲醛)-l,2-苯二胺(NAPPDIH)对Cr3+的响应。Cr3+能够使该探针的荧光猝灭。研究表明,在pH3.5(乙酸胺-盐酸)和DMSO/H2O(V/V,8:2)的条件下,8.0×10-6 mol/L的Cr3+可以导致NAPPDIH 65%的荧光猝灭。并且,Cr3+的浓度在5.0×10-7～8.0×10-6 mol/L的范围内,与荧光强度的变化值呈良好的线性关系,检出限为3.7×10-7 mol/L。方法可用于直接检测水样中的Cr3+。
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| 关 键 词： | Cr3+ salen N N’-二(2-羟基-1-萘甲醛)-l 2-苯二胺 荧光光谱 |
A study on the determination of Cr3+ with a schiff base fluorescence probe |
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| DONG Jing,YU Jie,FENG Su-ling,and WANG Ai-jun.A study on the determination of Cr3+ with a schiff base fluorescence probe[J].Chinese Journal of Analysis Laboratory,2012(9):85-88. |
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| Authors: | DONG Jing YU Jie FENG Su-ling and WANG Ai-jun |
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| Institution: | 1(1.College of Chemistry and Environmental Science,Henan Key Laboratory for Environmental Pollution Control,Henan Normal University,Xinxiang 453007;2.Department of Chemistry,Xinxiang Medical University,Xinxiang 453003) |
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| Abstract: | The corresponding response of salen-type Schiff base,N,N′-bis(2-hydroxy-1-naphthaldehyde)-l,2-Phenylenediimine(NAPPDIH) towards Cr+ was studied.Cr3+ could quench the fluorescence of the probe.The NAPPDIH-Cr complex gave 65% fluorescence decreased with 8.0×10-6 mol/L Cr3+ at pH 3.5(NH4OAC-HCl) in DMSO/H2O(V/V,8:2) medium.A good linearity between the decrease fluorescence intensity and the concentration of Cr3+ from 5.0×10-7 to 8.0×10-6 mol/L was established with a detection limit of 3.7×10-7 mol/L.The method could be used to directly detect trace level Cr3+ in water samples. |
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| Keywords: | Cr3+ Salen N N′-bis(2-hydroxy-1-naphthaldehyde)-l 2-Phenylenediimine Fluorescence spectrum |
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