کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6605073 | 1424099 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A selective and sensitive monitoring of the OH radical using flavonoid-modified electrodes
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
In the present work, three flavonoids (Fls) namely, quercetin (quer), morin (mor), and primuletin (prim) as well as their metal; (Cu(II) and Fe(III)) complexes (M-Fls) were deposited on APTES-FTO ((3-aminopropyl)triethoxysilane-fluorine doped tin oxide) electrodes. The formation of the (M-)Fls-APTES-FTO surface was verified and characterized through AT-FTIR. These surfaces were found to detect the OH radical at a concentration as low as 2Â nM using cyclic and square wave voltammetry and the decrease in the anodic peak currents of (M-)Fls-APTES-FTO working electrodes could be taken as a measure of the OH radical concentration in the sample. Furthermore, a comparison of the decrease in the peak currents of (M-)Fls-APTES-FTO caused by OH to the decrease noted in the presence of 100-fold higher concentrations of other reactive oxygen species (ROS including superoxide anion, alkylperoxide anion, singlet oxygen, chlorine monoxide, and hydrogen peroxide), confirmed a high selectivity and rather insignificant interference by other ROS of no more than 4%. Thus, this method provides significant selectivity in the electrochemical detection of the OH radical. Among the (M-)Fls tested for hydroxyl radical detection, the most sensitive ones were Fe-quer, Cu-quer and Fe-mor deposited on APTES-FTO.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 258, 20 December 2017, Pages 228-235
Journal: Electrochimica Acta - Volume 258, 20 December 2017, Pages 228-235
نویسندگان
Erum Jabeen, Naveed Kausar Janjua, Safeer Ahmed, Enrique DomÃnguez-Álvarez, Claus Jacob,