Solvent extraction separation of cobalt(II) from nickel and other metals with cyanex 272.
Cobalt(II) was quantitatively extracted at pH 8.0 with 5 x 10(-3)M Cyanex 272 [Bis(2,4,4 trimethyl pentyl) phosphoric acid] in chloroform. Cobalt(II) was stripped with 0.5M nitric acid and was determined by atomic absorption spectrometry as well as by spectrophotometry of the complex with nitroso R salt. Cobalt(II) was separated from vanadium, chromium, nickel, manganese, iron and zinc. Mixtures having different ratios of iron, cobalt and nickel were separated by proposed method.
Gandhi
M N
MN
Department of Chemistry, Indian Institute of Technology, Bombay-400 076, India.
Deorkar
N V
NV
Khopkar
S M
SM