Electrocatalytic Determination of Cysteamine in the Presence of Folic Acid Using a Modified Carbon Nanotube Paste Electrode

被引：0
|
作者：
Beitollahi, Hadi [1 ]
Taher, Mohammad Ali [2 ]
Ahmadipour, Malihe [2 ,3 ]
Hosseinzadeh, Rahman [4 ]
机构：
[1] Grad Univ Adv Technol, Inst Sci & High Technol & Environm Sci, Dept Environm, Kerman, Iran
[2] Shahid Bahonar Univ Kerman, Dept Chem, Kerman, Iran
[3] Shahid Bahonar Univ Kerman, Young Researchers Soc, Kerman, Iran
[4] Univ Mazandaran, Dept Organ Chem, Fac Chem, Babol Sar, Iran
来源：
ANALYTICAL & BIOANALYTICAL ELECTROCHEMISTRY | 2013年 / 5卷 / 05期
关键词：
Cysteamine; Folic Acid; Voltammetry; Carbon Nanotube Paste Electrodes;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Electrocatalytic oxidation of cysteamine at a carbon paste electrode modified with benzoylferrocene has been studied. The modified electrode showed excellent electrocatalytic activity toward cysteamine oxidation in phosphate buffer solution (PBS) (pH 7.0) with an overpotential of about 225 mV lower than that of the bare electrode. Under the optimized experimental conditions, the proposed electrochemical cysteamine sensor exhibited a linear calibration plot ranged from 7.0x10(-8) to 2.5X10(-4) M with a detection limit of 5.0x10(-8) M. Also, Square wave voltammetry (SWV) was used for simultaneous determination of cysteamine and folic acid at the modified electrode. Finally, the proposed method was applied to the determination of cysteamine and folic acid in urine.
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页码：543 / 554
页数：12
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