کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
744150 894381 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct oxidation of methionine at screen printed graphite macroelectrodes: Towards rapid sensing platforms
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Direct oxidation of methionine at screen printed graphite macroelectrodes: Towards rapid sensing platforms
چکیده انگلیسی

The direct electrochemical oxidation of methionine has been achieved at bare carbon based electrodes and for the first time at screen printed graphite electrodes in aqueous solutions. Due to scales of economy and intended use as a potential point-of-care sensor, the quantification of methionine was explored at screen printed electrodes, allowing linear ranges over the range 0.05–5.0 mM with a detection limit of 95 × 10−6 mol L−1 possible in model solutions. Application of this sensor was used for the determination of methionine in a pharmaceutical product containing a complex mixture of vitamins, amino acids, chelated minerals and additional factors with the results agreeing with manufacturers’ specification suggesting that this sensing platform holds promise as a rapid, sensitive and disposable sensor for methionine determination.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 155, Issue 2, 20 July 2011, Pages 831–836
نویسندگان
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