Automated method for determination of uranium in kerosene-amine sulphate extracts

An automated method is described for the determination of uranium(VI) that has been extracted into a trialkylamine in kerosene or similar diluent from sulphuric acid leach liquor. The method uses the continuous segmented-flow technique and can be set up with the use of commercial components. Discrimination against interference from other ions, especially sulphate, should be adequate for most purposes. 0.5 to 5 g uranium per litre of extract can be determined at a rate of 60 samples per hour. Minor modifications permit extension of this range to lower concentrations. (author)