Potentiometric and coulometric titration of 2-thiobarbituric acid.
A new method for the determination of 2-thiobarbituric acid, using its reaction with iodine in an alkaline medium is presented. In the volumetric titration with potentiometric end-point detection, the determinability range is 10-400 micromol (1.4-58 mg). In coulometric titration using the biamperometric end-point detection, 0.1-20 micromol (1.4 x 10(-2)-2.9 mg) of 2-thiobarbituric acid was successfully determined.
Ciesielski
W
W
Department of Instrumental Analysis, University of Łódź, Lindleya 3, Łódź, Poland.
Kowalska
J
J
Zakrzewski
R
R