Liquid-liquid extraction of thorium from malonate solution with liquid anion-exchangers.
Thorium is quantitatively extracted with 4% Amberlite LA-1 or LA-2 in xylene, from 0.01M malonic acid medium at pH 3.0 and stripped from the organic phase with 1M hydrochloric acid, then determined spectrophotometrically at 545 nm as its complex with thoron. It is separated from other elements by selective extraction and stripping.
Sawant
M A
MA
Department of Chemistry, Indian Institute of Technology, Bombay 400 076, India.
Khopkar
S M
SM