Determination of thorium with organic reagents: uses of some aryl fatty acids

✍ Scribed by Sachindra Kumar Datta; Gurupada Banerjee

• Publisher: Elsevier Science
• Year: 1955
• Tongue: English
• Weight: 680 KB
• Volume: 12
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)87806-x

✦ Synopsis

DETERMINATTON

OF

THORIUM

WITH ORGANIC REAGENTS:

USES OF SOME ARYL FATTY ACIDS

During our investigation on the thorium-precipitating action of a large number of organic acids l-3 and their derivatives, it has been found that some aryl fatty acids produce voluminous precipitate with thorium. The present paper deals with the determination of thorium ancl its separation from artificial mixtures of thorium-cerium, thorium-ccrium-lanthanum and from monazitc sand and other elements, by phcnylacetic-, phcnylpropionicand I-naphthylacctic acids, under different conditions. The principal advantage in using these reagents lies in the separation they afford of thorium from the rare earths. No mention is found in the Iiteraturo regarding the use of the acids of this series for the determination of thoribm.

Phcnylacctic

acid and r-naphthylacetic acid (B.D.H. reagent grade) were purified by recrystallization from hot water. Phcnylpropionic acid was prepared by the reduction of cinnamic acid as followsd: 20 g of cinnamic acid were stirred in 200 ml water contained in a beaker.