کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10410966 894535 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sensor for cysteine based on oxovanadium(IV) complex of Salen modified carbon paste electrode
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Sensor for cysteine based on oxovanadium(IV) complex of Salen modified carbon paste electrode
چکیده انگلیسی
The electrochemical behavior of a carbon paste electrode modified (CPEM) with N,N′-ethylenebis(salicylideneiminato)oxovanadium(IV) complex ([VIVO(Salen)]) was investigated as a new sensor for cysteine. Cyclic voltammetry at the modified electrode in 0.1 mol L−1 KCl solution (pH 5.0) showed a single-electron reduction/oxidation of the couple VO3+/VO2+. The CPEM with [VO(Salen)] presented good electrochemical stability in a wide pH range (4.0-10.0) and an ability to electrooxidate cysteine at 0.65 V versus SCE. These results demonstrate the viability of the use of this modified electrode as an amperometric sensor for cysteine determination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 106, Issue 2, 13 May 2005, Pages 619-625
نویسندگان
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