Abstract
Abstract No carrier added 204,206Bi radioisotopes were produced by alpha induced reaction on Tl2CO3 target. Liquid liquid extraction method using 18-crown-6 dissolved in nitrobenzene and HClO4 was developed for the separation of NCA 204,206Bi from bulk Tl target. Bulk Tl was observed to be extracted by the organic phase at higher HClO4 concentrations leaving NCA Bi radioisotopes in the aqueous phase. At 0.01 M 18-crown-6 concentration with 2 M HClO4, separation factor (S Tl/Bi) as high as 3.7 × 103 was achieved. The separation experiment was repeated with stable isotopes of Bi and Tl. The extent of separation was monitored by ICP-OES and the results corroborated with radiometric methods.
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