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Cathodic Stripping Determination of Water in Organic Solvents
Author(s) -
Xiao Changlong,
Weremfo Alexander,
Wan Chenyang,
Zhao Chuan
Publication year - 2014
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.201300471
Subject(s) - cathodic protection , stripping (fiber) , acetone , chemistry , acetonitrile , acetic acid , cathodic stripping voltammetry , tetrahydrofuran , anodic stripping voltammetry , inorganic chemistry , anode , electrochemistry , electrode , solvent , materials science , chromatography , organic chemistry , composite material
A cathodic stripping voltammetry (CSV) method has been developed to determine water content in organic solvents based on electrooxidation of a gold electrode in the presence of water to form gold oxides upon anodic polarizations. Following cathodic potential scan, a sharp reductive stripping peak of gold oxides is generated and the magnitude of the peak current is related to the water content in the organic solvents. The method has been applied for determination of water in four commonly used water miscible organic solvents, acetonitrile, tetrahydrofuran, acetone and glacial acetic acid, with limits of detection of 60, 10, 40 and 10 ppm, respectively.