Abstract
A procedure for the recovery of toluene, and the fluors 2,5-diphenyloxazole, and 1,4-bis-2-(5 phenyloxazolyl)-benzene from used scintillation fluid is described. Toluene is recovered by distillation, and the accumulated residue containing the fluors is dried, and subjected to vacuum distillation and recrystallization. The recovery of the two fluors is 75 and 70%, respectively. The method is relatively simple and could be used in many endocrine laboratories for economy and to reduce volumes of radioactive waste.
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