A tin–bismuth alloy electrode for the cathodic stripping voltammetric determination of iron in coastal waters
作者： Mingyue Lin , Dawei Pan , Xueping Hu , Fei Li , Haitao Han
DOI: 10.1039/C5AY00886G
关键词: Stripping (chemistry) 、 Cathodic stripping voltammetry 、 Tin 、 Chemistry 、 Working electrode 、 Analytical chemistry 、 Inorganic chemistry 、 Bismuth 、 Cathodic protection 、 Detection limit 、 Buffer solution
摘要: We employed a home-made tin–bismuth alloy electrode (SnBiE) as the working with 1-(2-piridylazo)-2-naphthol (PAN) complexing ligand to detect trace iron. This method is based on cathodic reduction of Fe(III)–PAN complex Fe(II)–PAN at SnBiE by using adsorptive stripping voltammetry. The experimental parameters, such pH value, concentration buffer solution, accumulation potential, time and concentrations PAN, were optimized, interference other ions was investigated in detail. response Fe(III) linear range 1 nM 900 detection limit 0.2 (after 60 s accumulation, s/n = 3). can also be applied determination iron coastal rivers seawater satisfactory results.
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