Separation of small amounts of thorium from the cerite earths of monazite and other elements. Use of cinnamic acid

Abstract
Cinnamic acid has been found to be a suitable reagent for the estimation and separation of small amounts of thorium from the cerite earths of monazite. The latter in concentration upto 2000 fold may be conveniently separated in a single precipitation. Using this reagent a separation from other common elements may also be effected. The presence of a little nitric acid (about N/100) in the wash liquid is found useful in giving separations described particularly when dealing with relatively large amounts of the cerite earths.

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