Determination of Chromium(VI) by Batch Injection Analysis and Adsorptive Stripping Voltammetry
作者： Christopher M. A. Brett , Olga M. S. Filipe , C. Susanna Neves
DOI: 10.1081/AL-120019255
关键词: Cathodic stripping voltammetry 、 Analytical chemistry 、 Chemistry 、 Cupferron 、 Detection limit 、 Square wave 、 Mercury (element) 、 Electrochemistry 、 Chromium 、 Adsorptive stripping voltammetry 、 Spectroscopy 、 Clinical biochemistry 、 Biochemistry 、 Biochemistry, medical
摘要: Abstract A new sensitive voltammetric method is presented for the determination of trace levels Cr(VI). The based on square wave adsorptive stripping voltammetry (AdSV) in conjunction with electrochemical batch injection analysis technique at mercury thin-film electrodes. chromium made presence cupferron as ligand. Relevant experimental parameters are explored and optimized, such mode, concentration, accumulation potential time, parameters. preconcentration time 20 s at −0.8 V vs. SCE results a detection limit 32 nM. relative standard deviation 12 measurements 0.12 µM was 6.5%. Possible interferences by other metals considered.
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