Use of vitreous carbon as a working electrode in coulometric titration of potassium hydrogen phthalate.
The use of a vitreous carbon electrode as a cathode in the amperostatic coulometric titration of aqueous potassium hydrogen phthalate solution is described. It is shown that 10 mg of the phthalate can be titrated with a precision better than 0.5%. Current-voltage curves for platinum and vitreous carbon cathodes show that there is an overpotential on the latter relative to the former.
Jennings
V J
VJ
Department of Chemistry and Metallurgy Lanchester Polytechnic Coventry, U.K.
Dodson
A
A
Tedds
G
G