Selective substoichiometric separation of fluoride by solvent extraction into chloroform with triphenyl-tin chloride.
01 January 1984
A unique method has been developed for the selective separation of fluoride from a fifty percent dimethylsulfoxide (DMSO) aqueous phase via substoichiometric replacement reaction with triphenyl- tin chloride and extraction into chloroform. Precise (+-2. 5%) substoichiometric separations of fluoride in the presence of bromide, chloride, iodide, nitrate, thiocyanate, or sulfate has been accomplished. Applicability of the method for radionuclidic separations in activation analysis is demonstrated via the examples of irradiated ammonium fluoride, hydrofluoric acid, and (18)F isotope labeled sodium and magnesium fluorides.