کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1788483 | 1524162 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyaniline-based microelectrodes for sensing ascorbic acid in beverages
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Polyaniline-based microelectrodes for sensing ascorbic acid in beverages Polyaniline-based microelectrodes for sensing ascorbic acid in beverages](/preview/png/1788483.png)
چکیده انگلیسی
Thin films of polyaniline containing the dopant ions polyvinylsulfonate (PVS) and polystyrenesulfonate (PSS) have been prepared on 25 μm Pt disk microelectrodes and tested for ascorbic acid oxidation in various buffers and in wine and orange juice containing solutions. A potential of 0.1 V (SCE) was found to be most suited for the amperometric determination of ascorbic acid in beverages diluted with a neutral pH buffer, with minimal interference from other oxidisable compounds. However, unknown wine and juice components lessen the ascorbic acid oxidation current through their interaction with the polyaniline layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 8, Issues 3â4, May 2008, Pages 320-323
Journal: Current Applied Physics - Volume 8, Issues 3â4, May 2008, Pages 320-323
نویسندگان
Paul A. Kilmartin, A. Martinez, P.N. Bartlett,