Electrochemical determination of nitrobenzene using bismuth-film modified carbon paste electrode in the presence of cetyltrimethylammonium bromide
Electrochemical determination of nitrobenzene using bismuth-film modified carbon paste electrode in the presence of cetyltrimethylammonium bromide
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十六烷基三甲基溴化铵存在下铋膜修饰碳糊电极电化学测定硝基苯
DOI：
10.1039/c0ay00150c
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发表时间：
2010-08-01
影响因子：
3.1
通讯作者：
Deng, Dongmei
中科院分区：
文献类型：
--
作者：
Luo, Liqiang;Wang, Xia;Deng, Dongmei
采用方波伏安法研究了硝基苯（NB）在十六烷基三甲基溴化铵（CTAB）存在下在铋膜修饰碳糊电极（BiF/CPE）上的电化学行为。由于CTAB能促进NB在电极表面的富集，从而明显改善了NB的电化学响应。对铋膜的沉积电位、沉积时间、溶液pH值、CTAB浓度等工艺参数进行了优化。在优化的条件下，NB的浓度在1.0 × 10−6 ~ 1.0 × 10−4 mol L−1范围内与阴极峰电流成正比，检出限为8.3 × 10−7 mol L−1。BiF/CPE具有良好的稳定性和重现性，可用于NB的快速、简便、灵敏分析。
Electrochemical behavior of nitrobenzene (NB) at a bismuth-film modified carbon paste electrode (BiF/CPE) in the presence of cetyltrimethylammonium bromide (CTAB) was investigated by square wave voltammetry. The electrochemical response of NB was apparently improved by CTAB due to the enhanced accumulation of NB at the electrode surface. Operational parameters including the deposition potential and time of bismuth film, pH of solutions and concentration of CTAB were investigated and optimized. Under optimized conditions, the cathodic peak current was proportional to the concentration of NB in the range of 1.0 × 10−6 to 1.0 × 10−4 mol L−1 with the detection limit of 8.3 × 10−7 mol L−1. The proposed BiF/CPE revealed good stability and reproducibility for rapid, simple and sensitive analysis of NB.