M. Kyrs et J. Alexova, EXTRACTION SEPARATION OF SR2-POLYETHYLENE -NITROBENZENE-CCL4-CYCLOHEXANEDIAMINETETRAACETATE( FROM BA2+ IN THE SYSTEM COBALT DICARBOLLIDE), Journal of radioanalytical and nuclear chemistry, 187(4), 1994, pp. 285-297
The kinetics of Sr and Ba distribution both for extraction and back-ex
traction processes has been investigated. The influence of the equilib
rium pH, the CDTA concentration and the Na/Li ratio on the distributio
n of the metals to be separated was established. Separation factors be
ta(Ba/Sr) achieved were not altered by replacing PEG 400 as the synerg
ic agent by the cheaper technical product Slovafol 909. Practical hint
s for carrying out the separation for analytical purposes are given.