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Simultaneous Determination of Antimony(III) and Molybdenum(VI) by Adsorptive Stripping Voltammetry Using Quercetin as Complexing Agent
Author(s) -
Rojas Carlos,
Arancibia Verónica,
Gómez Marisol,
Nagles Edgar
Publication year - 2013
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.201200487
Subject(s) - antimony , chemistry , molybdenum , stripping (fiber) , quercetin , chelation , adsorptive stripping voltammetry , voltammetry , nuclear chemistry , inorganic chemistry , chromatography , electrode , electrochemistry , materials science , organic chemistry , composite material , antioxidant
A sensitive and selective voltammetric method for simultaneous determination of Sb(III) and Mo(VI) using Quercetin (Q) as complexing agent is described. Optimal conditions were found to be: pH 3.7, C Q =6.0 µmol L −1 and E acc =−0.10 V. The LOD (3 σ ) for Sb(III) are 0.076 and 0.040 µg L −1 , whereas for Mo(VI) are 0.086 and 0.048 µg L −1 with t acc of 60 and 120 s, respectively. The method was validated using synthetic sea water (ASTM D665) and was applied to the determination of Sb(III) and Mo(VI) in natural waters with satisfactory results.