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Application of Anodic Stripping Differential Alternative Pulses Voltammetry for Simultaneous Species Quantification
Author(s) -
Zlatev Roumen,
Stoytcheva Margarita,
Valdez Benjamín
Publication year - 2018
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201800291
Subject(s) - stripping (fiber) , anodic stripping voltammetry , voltammetry , analytical chemistry (journal) , waveform , chemistry , supporting electrolyte , electrolyte , signal (programming language) , resolution (logic) , anode , electrode , electrochemistry , chromatography , materials science , voltage , physics , computer science , quantum mechanics , artificial intelligence , composite material , programming language
The second order voltammetric technique Differential Alternative Pulses Voltammetry (DAPV) was applied in anodic stripping mode for simultaneous quantification of traces of species having close E 1/2 . The potential‐time waveform and the signal processing allowing the DAPV application in stripping mode are presented. The pulses widths and amplitudes were optimized to obtain maximal sensitivity and resolution at traces of In 3+ and Cd 2+ (having E 1/2 difference of 45 mV) simultaneous quantification in presence of excess of Pb 2+ . Precise results for both species concentrations were obtained up to In 3+ to Cd 2+ concentration ratio as high as 1 to 10 without any sample pre‐treatment in purified industrial waste waters using 0.1 mol L −1 HCl as supporting electrolyte.