A Radiochemical Method for Selective Determination of Traces of Lead

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Abstract
A very simple and rapid radiochemical method for the determination of 0.01—1 mcg of lead has been developed. It consists of adding carrier-free 2 1 2 Pb to the analysed sample, followed by shaking with a standard lead diethyldithiocarbamate solution in carbon tetrachloride. The amount of non-active lead in the sample is determined from activities of the organic and aqueous phases. A 10-fold excess of bismuth and more than 50–100-fold excess of other metals extractable as diethyldithiocarbamates do not interfere in the determination.

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