کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7149059 | 1462117 | 2012 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polypyrrole microfibres synthesized with Quillaja Saponin for sensing of catechol
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Polypyrrole microfibres synthesized with Quillaja Saponin for sensing of catechol Polypyrrole microfibres synthesized with Quillaja Saponin for sensing of catechol](/preview/png/7149059.png)
چکیده انگلیسی
The polypyrrole microfibres were synthesized potentiodynamically on platinum electrodes using the natural surfactant Quillaja Saponin. Employing amperometric and impedimetric techniques, the suitability of these electrodes as biosensors for catechol is investigated, in the presence of the enzyme Tyrosinase. The amperometric measurements reveal the linear concentration regime from 1 μM to 400 μM while the upper limit of detection using impedance studies is estimated as 200 μM. The fitting of the Nyquist and Bode' plots is carried to deduce the system parameters. The low magnitude of Michaelis-Menten constant (103 μM) suggests the high activity of the Tyrosinase enzyme. The temporal stability of the electrode has been estimated and the effect of interference from phenol, resorcinol and ascorbic acid is also investigated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 173, October 2012, Pages 40-51
Journal: Sensors and Actuators B: Chemical - Volume 173, October 2012, Pages 40-51
نویسندگان
R. Ramya, M.V. Sangaranarayanan,