title: Separation of (203)Pb by ion-exchange chromatography on chelex 100 after production of (203)Pb by the Pb(p, xn)(203)Bi--> EC.beta+ (203)Pb nuclear reaction.
abstract: Bismuth radioisotopes, produced by 50-MeV proton bombardment of a lead target in a cyclotron, are separated from the lead target material by ion-exchange chromatography on a column containing 5.0 ml of Chelex 100. After a decay period of 24 hr, the (203)Pb formed in situ is eluted from the column and then separated from (200)Tl and (201)Tl on a second ion-exchange column containing 0.5 ml of Chelex 100. Separations are sharp and carrier-free (203)Pb is obtained.
authors.affiliation: Department of Chemistry, Rand Afrikaans University, P.O. Box 524, Johannesburg 2000, Republic of South Africa.
authors.forename: T N
authors.initials: TN
authors.lastname: van der Walt
authors.forename: P P
authors.initials: PP
authors.lastname: Coetzee