Enhancement of surfactants in the electrochemical determination of phenols and the mechanisms research
Enhancement of surfactants in the electrochemical determination of phenols and the mechanisms research
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表面活性剂对苯酚电化学测定的增强作用及其机理研究
DOI：
10.1016/j.colsurfa.2008.07.003
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发表时间：
2008-10
期刊：
影响因子：
--
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中科院分区：
文献类型：
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作者：
在玻碳电极上使用表面活性剂可以有效地增强酚类化合物的电化学反应。在HAc-NaAc缓冲溶液中，研究了十六烷基三甲基溴化铵和十六烷基氯化吡啶对三硝基苯酚、2，4-二硝基苯酚、2，5-二硝基苯酚、邻二羟基苯、对二羟基苯、1-萘酚、2-萘酚和三苯酚的增敏作用。对电极、表面活性剂和被测酚之间的相互作用机理进行了全面的研究，提出了两种机理模型。一种是静电效应模型，另一种是氢键模型。并对pH值、表面活性剂浓度等最佳条件进行了详细的研究。对于电离酚类，表面活性剂的最佳添加浓度为1×10−4molL−1，远低于临界胶束浓度。对于非电离酚类，分别为1.2×10−3molL−1，接近临界胶束浓度。所得结果对苯酚和取代苯酚的测定具有重要意义。
The electrochemical responses of phenols can be enhanced effectively by using surfactants at the glassy carbon electrode. The enhancement of surfactant, including cetyl trimethyl ammonium bromide and cetyl pyridinium chloride, on trinitrophenol, 2,4-dinitrophenol, 2,5-dinitrophenol, o-dihydroxy-benzene, p-dihydroxy-benzene, 1-naphthol, 2-naphthol and triphenol has been investigated in HAc–NaAc buffer solution, and most of the results are reported first. The interaction mechanism among the electrode, surfactant and detected phenols was studied comprehensively and two mechanism models were suggested. One is electrostatic effect model and the other is hydrogen bond model. The optimal conditions, such as pH value, concentration of surfactant used, were also studied in detail. For ionized phenols, the optimal concentration of surfactant added was 1.0×10−4molL−1, which was well below the critical micelle concentration. For nonionized phenols, the respective value was 1.2×10−3molL−1, which was close to the critical micelle concentration. All of the results obtained will be of great significance to the determination of phenols and substituted phenols.
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影响因子：
2
作者：
G. Wei;Kang Xiao-feng;Song Jun-feng
通讯作者：
G. Wei;Kang Xiao-feng;Song Jun-feng
影响因子：
6.2
作者：
Shengshui Hu;Yi-chen Yan;Zaofan Zhao
通讯作者：
Shengshui Hu;Yi-chen Yan;Zaofan Zhao
影响因子：
6.2
作者：
W. Frenzel;S. Krekler
通讯作者：
W. Frenzel;S. Krekler
DOI：
10.1016/s0928-4931(03)00053-5
发表时间：
2003-10
期刊：
Materials Science and Engineering: C
影响因子：
--
作者：
Qiong He;Shuai Yuan;Cui Chen;Shengshui Hu
通讯作者：
Qiong He;Shuai Yuan;Cui Chen;Shengshui Hu
DOI：
10.1007/s002160000423
发表时间：
2000-07
期刊：
Fresenius' Journal of Analytical Chemistry
影响因子：
--
作者：
K. Jiao;Wei Sun;Shu-Sheng Zhang
通讯作者：
K. Jiao;Wei Sun;Shu-Sheng Zhang