Abstract
A simple, high yield method for the separation of 111Ag by liquid/liquid extraction from irradiated natural palladium for nuclear-medical purposes is described. In a first step 111Ag is extracted almost quantitatively, together with a small amount of palladium, from an aqueous solution into toluene by complexation with triphenylphosphine. Using the different chemical and physical properties of the two elements 111Ag is subsequently re-extracted selectively into a convenient buffer solution. The overall yields of 111Ag are better than 70% and palladium is depleted by a factor of up to 27,000. The procedure takes about 2–3 h.
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Schedule a callMore From: International Journal of Radiation Applications & Instrumentation. Part A, Applied Radiation & Isotopes
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