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论文类型：期刊论文

发表时间：2016-02-07

发表刊物：ANALYST

收录刊物：PubMed、SCIE

卷号：141

期号：3

页面范围：1077-1082

ISSN号：0003-2654

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 mu M. Their detection limits were both evaluated to be 0.2 mu M (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.