Abstract:
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
