کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7150121 | 1462120 | 2012 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of amiloride at Nafion-CNT-nano-composite film sensor employing adsorptive stripping differential pulse voltammetry
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
An electrochemical method employing a Nafion-carbon nanotube-nano-composite film modified glassy carbon electrode (NAF-CNT-GCE) has been developed for the determination of amiloride (AMI). Cyclic voltammetry, electrochemical impedance spectroscopy and adsorptive stripping differential pulse voltammetry were utilized to study the electrochemical behavior of AMI. Scanning electron microscopy has been performed to study the surface morphology of the electrodes. Studies reveal that the irreversible oxidation of AMI was highly facile on NAF-CNT-GCE for which a plausible mechanism is proposed. The optimized linear working range and detection limit (S/NÂ =Â 3) are 9.07Â ÃÂ 10â9-5.06Â ÃÂ 10â5Â M and 7.02Â ÃÂ 10â9Â M, respectively. The analytical application of the modified GCE is demonstrated by determining AMI in pharmaceutical formulations and biological fluids (urine and plasma). Further, the ease of preparation with high sensitivity, low detection limit and excellent reproducibility makes the proposed method highly advantageous for AMI determination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 169, 5 July 2012, Pages 341-348
Journal: Sensors and Actuators B: Chemical - Volume 169, 5 July 2012, Pages 341-348
نویسندگان
Purvi B. Desai, Ashwini K. Srivastava,