کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1244573 | 969689 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Amperometric l-ascorbic acid biosensors equipped with enzyme micelle membrane
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
Ascorbate oxidase (ASOD) bound to polymaleimidostyrene (PMS) forms stable ASOD micelle structure in polystyrene (PS) membrane. The oxygen permeable hydrophobic ASOD micelle membrane were coated on both aminated glassy carbon electrode (AGCE) and gold electrode (AuE) for the amperometric detections of l-ascorbic acid (AsA) based on the consumption of oxygen. These AsA sensors have good sensitivities with short response time (within 1 min.). A good linear relationship was observed in the concentration range of 5 μM to 0.4 mM when AGCE was used and the applied potential was â0.5 V vs. Ag/AgCl. Interferences from the reducing agents can be avoided because the detections were conducted at cathodic potential.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 74, Issue 5, 15 February 2008, Pages 1681-1685
Journal: Talanta - Volume 74, Issue 5, 15 February 2008, Pages 1681-1685
نویسندگان
Xiuyun Wang, Hiroaki Watanabe, Shunichi Uchiyama,