title: A rapid automatic method for the determination of oxygen in organic substances, using coulometry at controlled potential.
abstract: An Unterzaucher apparatus for the determination of oxygen in organic compounds is used. The iodine vapour formed in the anhydroiodic acid tube is led by a stream of nitrogen to the cathodic chamber of an electrolysis cell. Here the iodine is reduced at controlled potential at a rotating Pt-eiectrode. The amount of electricity used is determined by an electronic integrator and read from a digital voltmeter. For weights of samples in the range 0.5-6 mg the standard deviation is about 0.08% oxygen.
authors.affiliation: Department of Analytical Chemistry University of Lund P.O.B. 740, S-220 07 Lund 7, Sweden.
authors.forename: K J
authors.initials: KJ
authors.lastname: Karrman
authors.forename: R
authors.initials: R
authors.lastname: Karlsson