کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
191542 459723 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical tolazoline sensor based on gold nanoparticles and imprinted poly-o-aminothiophenol film
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrochemical tolazoline sensor based on gold nanoparticles and imprinted poly-o-aminothiophenol film
چکیده انگلیسی

Amperometric detection of tolazoline (TL) was carried out on a gold nanoparticles (AuNPs)/poly-o-aminothiophenol (PoAT)-modified electrode by a molecular imprinting technique and electropolymerization method. The modification procedure was characterized via electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The recognition between the imprinted sensor and target molecule was observed by measuring the variation of amperometric response of the oxidation-reduction probe, K3Fe(CN)6 on electrode. Under the optimal experimental conditions, the peak currents were proportional to the concentrations of tolazoline in two ranges of 0.05–5.0 μg mL−1 and 5.0–240 μg mL−1 with the detection limit of 0.016 μg mL−1. Meanwhile the prepared sensor showed sensitive and selective binding sites for tolazoline. The enhancement of sensitivity was attributed to the presence of AuNPs which decreased the electron-transfer impedance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 55, Issue 12, 30 April 2010, Pages 4039–4044
نویسندگان
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