کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1245550 969725 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Parameters affecting the determination of mercury by anodic stripping voltammetry using a gold electrode
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Parameters affecting the determination of mercury by anodic stripping voltammetry using a gold electrode
چکیده انگلیسی

The electrochemical determination of aqueous Hg(II) by anodic stripping voltammetry (ASV) at a solid gold electrode is described. The aim of this work is to optimise all factors that can influence this determination. Potential wave forms (linear sweep, differential pulse, square wave), potential scan parameters, deposition time, deposition potential and surface cleaning procedures were examined for their effect on the mercury peak shape and intensity. Five supporting electrolytes were tested. The best responses were obtained with square wave potential wave form and diluted HCl as supporting electrolyte. Electrochemical and mechanical surface cleaning, aimed at removing the amount of mercury deposited onto the gold surface, were necessary for obtaining a good performance of the electrode. Response linearity, repeatability, accuracy and detection limit were also evaluated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 75, Issue 1, 15 March 2008, Pages 266–273
نویسندگان
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