Abstract
Ionic liquid-salt based aqueous biphasic systems (ABS) are examples of ABS of salt–salt combination. In the present study, ABS composed of water soluble ionic liquid (IL) 1-butyl-3-methylimidazolium chloride ([bmim]Cl) and kosmotropic salts K3PO4, K2CO3 were applied in the separation of no-carrier-added (NCA) 195(m,g),197mHg radionuclides from bulk Au target. The 195(m,g),197mHg radionuclides were produced by irradiating gold foil with 23 MeV protons. NCA Hg radionuclides were extracted into the IL phase leaving bulk Au in the salt rich phase. At the optimized condition high separation factors, 3.5 × 104 and 5.5 × 104 were obtained when K3PO4 and K2CO3 were used as salt rich phase.
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