曹俊涛, 王辉, 刘启祥, 刘彦明. 基于银纳米增强的化学发光法检测对苯二酚[J]. 信阳师范学院学报(自然科学版), 2015, 28(2): 214-217. DOI: 10.3969/j.issn.1003-0972.2015.02.014
引用本文: 曹俊涛, 王辉, 刘启祥, 刘彦明. 基于银纳米增强的化学发光法检测对苯二酚[J]. 信阳师范学院学报(自然科学版), 2015, 28(2): 214-217. DOI: 10.3969/j.issn.1003-0972.2015.02.014
Cao Juntao , Wang Hui , Liu Qixiang , Liu Yanming . Sensitive Detection of Hydroquinone with Silver Nanoparticles-enhanced Chemiluminescence[J]. Journal of Xinyang Normal University (Natural Science Edition), 2015, 28(2): 214-217. DOI: 10.3969/j.issn.1003-0972.2015.02.014
Citation: Cao Juntao , Wang Hui , Liu Qixiang , Liu Yanming . Sensitive Detection of Hydroquinone with Silver Nanoparticles-enhanced Chemiluminescence[J]. Journal of Xinyang Normal University (Natural Science Edition), 2015, 28(2): 214-217. DOI: 10.3969/j.issn.1003-0972.2015.02.014

基于银纳米增强的化学发光法检测对苯二酚

Sensitive Detection of Hydroquinone with Silver Nanoparticles-enhanced Chemiluminescence

  • 摘要: 在碱性条件下, 银纳米(AgNPs)对 luminol- K 3 Fe(CN) 6 化学发光体系具有显著的增强作用. 研究发现, 对苯二酚(HQ)对 luminol- K 3 Fe(CN) 6 - AgNPs 化学发光体系具有抑制作用. 结合流动注射技术提出了 lumi-nol- K 3 Fe(CN) 6 - AgNPs 化学发光 (FI- CL)灵敏检测 HQ 的新方法. 结果表明, HQ 的线性范围为 1. 0 × 10-10~1. 0 × 10-7mol· L-1 , 检出限为 3. 0 × 10 -11mol · L-1 , 对 5. 0 × 10 -9mol·L-1 的 HQ 溶液平行测定 11 次的 RSD 为 1. 4%. 将提出的方法分别用于河水和自来水中 HQ 含量的测定, 加标回收率分别为 98. 0% ~100. 8%和 99. 1% ~100. 4%. 结合化学发光光谱, 对银纳米增强 luminol- K 3 Fe(CN) 6 化学发光体系以及 HQ 对该体系的抑制作用机理进行了探讨.

     

    Abstract: Silver nanoparticles (AgNPs) exhibited better chemiluminescence (CL) catalysis activity in luminol-K3Fe(CN)6 system under alkaline condition. It was found that the CL intensity of luminol-K3Fe(CN)6-AgNPs was strongly inhibited in the presence of hydroquinone (HQ). Based on the luminol-K3Fe(CN)6-AgNPs CL system, a sensitive method to detect HQ by flow injection(FI) coupled with chemiluminescence (CL) detection was described. Under the optimized conditions, the sensitive detection of HQ could be realized and the detection limit of HQ was calculated to be 3.0 × 10-11 mol/L with a linear range of 1.0 × 10-10~1.0 × 10-7 mol/L. The relative standard deviation of 1.4% for 11 replicate determinations of 5.0 × 10-9 mol/L was obtained. The method was applied to the HQ analysis of river water and tap water samples with recoveries of 98.0 %~100.8% and 99.1%~100.4%, respectively. The possible mechanism of AgNPs enhancing effect on the weak CL emission of K3Fe(CN)6 system and the inhibition effect of HQ on the system was discussed by fluorescence spectrophotometer

     

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