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A Batch Injection Analysis System with Square‐wave Voltammetric Detection for Fast and Simultaneous Determination of Zinc and Ascorbic Acid
Author(s) -
Ribeiro Michelle M. A. C.,
Rocha Raquel G.,
Munoz Rodrigo A. A.,
Richter Eduardo M.
Publication year - 2021
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.202060078
Subject(s) - ascorbic acid , zinc , detection limit , square wave , voltammetry , chemistry , supporting electrolyte , electrolyte , electrode , buffer solution , analytical chemistry (journal) , anodic stripping voltammetry , stripping (fiber) , inorganic chemistry , chromatography , electrochemistry , materials science , organic chemistry , food science , voltage , physics , quantum mechanics , composite material
Abstract The determination of organic and inorganic compounds in a single run is still a great challenge. In this paper, we developed a method for fast simultaneous determination of ascorbic acid (AA) and zinc ions (Zn) using batch injection analysis with detection by square‐wave anodic stripping voltammetry (BIA‐SWASV). Britton‐Robinson (BR) buffer solution (pH=6.0) as the supporting electrolyte and boron doped diamond (BDD) as the working electrode. The method presented favorable analytical characteristics such as fast response (67 injections h −1 ), low detection limits (0.2 and 5.4 μmol L −1 for Zn ions and AA, respectively) and recovery values of 99±3%.