期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 180, 期 1-3, 页码 703-709出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2010.04.094
关键词
Bisphenol A; Polypyridyl ruthenium(II)complex; ITO; Electrochemical oxidation; Detection
资金
- Natural Science Foundation of Guangzhou [2004J1-C0091]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20094407120008]
A simple strategy for the direct and indirect detections of bisphenol A (BPA) at an ITO electrode is described. The direct determination of BPA in buffer solution of pH 7.2 is accomplished by the application of differential pulse voltammograms with the anodic peak at 0.546 V. The indirect approach is based on the mediation of [Ru(bpy)(3)](2+) (where bpy=2,2'-bipyridine), which is served as an excellent catalyst to induce the oxidation of BPA. By monitoring the peak current of [Ru(bpy)(3)](2+)-BPA complex, the mediated detection of BPA is successfully carried out. The response current exhibits a linear range between 5 and 120 mu mol L-1 with a high sensitivity (0.22 mu A mu mol(-1) L-1). The detection limit of BPA is 0.29 mu mol L-1 (S/N = 3), which is larger than that analyzed by gas chromatography-mass spectrometry, however this detection method not only has the advantages of low cost and simple operation, but also provides a powerful basis for removing BPA. In addition, according to the effects of pH, scan rate and mediator concentrations on the voltammetric responses of BPA oxidation, the oxidized mechanism of BPA in the presence of [Ru(bpy)(3)](2+) on the ITO electrode is discussed in detail. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据