Electrochemical oxidation of salicylic acid at well-aligned multiwalled carbon nanotube electrode and its detection

被引：73
|
作者：
Zhang, Wei-De [1 ]
Xu, Bin [1 ]
Hong, Yu-Xiang [1 ]
Yu, Yu-Xiang [1 ]
Ye, Jian-Shan [1 ]
Zhang, Jia-Qi [2 ]
机构：
[1] S China Univ Technol, Sch Chem & Chem Engn, Nano Sci Res Ctr, Guangzhou 510640, Guangdong, Peoples R China
[2] Tianjin Univ Technol, Coll Environm Sci & Safety Engn, Tianjin 300071, Peoples R China
来源：
JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2010年 / 14卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Salicylic acid; Acetylsalicylic acid; Electroanalysis; Multiwall carbon nanotubes; Sensor; DIFFERENTIAL-PULSE VOLTAMMETRY; ACETYLSALICYLIC-ACID; PHARMACEUTICAL FORMULATIONS; LIQUID-CHROMATOGRAPHY; ASCORBIC-ACID; URINE; POLAROGRAPHY; TRANSFERS; DRUGS; SERUM;
D O I：
10.1007/s10008-010-1014-z
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In this paper, an electrochemical sensor for sensitive and convenient determination of salicylic acid (SA) was constructed using well-aligned multiwalled carbon nanotubes as electrode material. Compared to the glassy carbon electrode, the electro-oxidation of SA significantly enhanced at the multiwalled carbon nanotube (MWCNT) electrode. The MWCNT electrode shows a sensitivity of 59.25 mu A mM(-1), a low detection limit of 0.8 x 10(-6) M and a good response linear range with SA concentration from 2.0 x 10(-6) to 3.0 x 10(-3) M. In addition, acetylsalicylic acid was determined indirectly after hydrolysis to SA and acetic acid, which simplified the detection process. The mechanism of electrochemical oxidation of SA at the MWCNT electrode is also discussed.
引用
收藏
页码：1713 / 1718
页数：6
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