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Adsorptive Cathodic Stripping Voltammetric Method for Determination of Gallium Using an In Situ Plated Lead Film Electrode
Author(s) -
Grabarczyk Malgorzata,
Wasąg Joanna
Publication year - 2015
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.201500235
Subject(s) - stripping (fiber) , gallium , electrode , electrolyte , anodic stripping voltammetry , detection limit , supporting electrolyte , cathodic protection , materials science , certified reference materials , analytical chemistry (journal) , adsorptive stripping voltammetry , chemistry , voltammetry , electrochemistry , chromatography , metallurgy , composite material
The in situ plated lead film electrode was proposed for the first time for adsorptive stripping voltammetric determination of gallium in water samples. The method was based on simultaneous lead film formation and Ga(III)‐cupferron complex preconcentration at −0.7 V and its cathodic stripping during the potential scan. The composition of the supporting electrolyte, cupferron concentration, conditions of lead film formation, potential and time of accumulation were studied in detail. Under optimum conditions the limit of detection was 3.8×10 −9 mol L −1 . The proposed procedure was validated in the course of Ga(III) determination in waste water certified reference materials.