[Studies on the liquid-liquid extraction behaviour of Co(II) and Ni(II) without organic solvents].
In PEG-Eriochrome cyanine R-(NH4)2SO4 system the liquid-liquid extraction behaviour of Co(II) and Ni(II) without organic solvents was investigated. We found that Ni(II) was almost extracted by PEG phase while Co(II) was not extracted in the water solutions of NaAc-HAc (pH=5) and (NH4)2SO4. Thus Co(II) was quantitatively separated from mixed solutions of Ni(II) and Co(II) ions.
Zhang
Z
Z
Department of Chemistry, Huaibei Teacher's College of Coal Industry, 235000 Huaibei.
Deng
F
F
Shi
Y
Y