对苯二酚
儿茶酚
检出限
化学
水溶液
玻璃碳
电化学
铵
氮气
核化学
无机化学
电极
色谱法
循环伏安法
有机化学
物理化学
作者
Xiuyun Wang,Min Xi,Mengmeng Guo,Fangmeng Sheng,Guang Xiao,Shuo Wu,Shunichi Uchiyama,Hiroaki Matsuura
出处
期刊:Analyst
[The Royal Society of Chemistry]
日期:2016-01-01
卷期号:141 (3): 1077-1082
被引量:45
摘要
In this contribution, a very simple and reliable strategy based on the easy modification of a glassy carbon electrode (GCE) by pre-electrolyzing GCE in ammonium carbamate aqueous solution was employed for the simultaneous determination of hydroquinone (HQ) and catechol (CC). Compared with bare GCE, the incorporation of nitrogen into the GCE surface structure improved the electrocatalytic properties of GCE towards the electro-oxidation of HQ and CC. The nitrogen-introduced GCE (N-GCE) was evaluated for the simultaneous detection of HQ and CC and the linear ranges for HQ and CC were both from 5 to 260 μM. Their detection limits were both evaluated to be 0.2 μM (S/N = 3). The present method was applied for the determination of HQ and CC in real river water samples with recoveries of 95.0-102.1%. In addition, a possible detection mechanism of HQ and CC was discussed.
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