Constant current source for automatic coulometric titrations
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Date
1958-03
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Australian Atomic Energy Commission
Abstract
A simple, but versatile constant current source for automatic coulometric titrations is described. The unit is suitable for use with a commercial automatic pH titrimeter and will accommodate wide variations of mains voltage and load resistance. Coulometric titrations may be carried out "fast" or "slow" with a choice of four current ranges (2-37 mA) for titrations up to or near the end point. A slow "1mA" range is available for approaching the end point and the titration of microgram amounts of material. The automatic pH titrimeter provides for automatic change fast to slow generation of reagent and for stopping the titration at selected end points. The utility of the equipment has been demonstrated by the estimation of chromium with electrogenerated ferrous iron. The unit should be suitable for many other coulometric titrations.
Description
Keywords
Titration, Chromium, Automation, Electric potential, Iron compounds
Citation
Palmer, A. R., & Pryor, A. W. (1958). Constant current source for automatic coulometric titrations. (AAEC/E24). Lucas Heights, NSW: Australian Atomic Energy Commission