Patent Number: 056195451
Section: claims

1. A process for purifying cyclotron produced .sup.123 I which comprises: (a) passing a recovered solution of a cyclotron produced iodide over an anion exchange resin;  (b) washing the ion exchange resin in (a) with a weak solution comprising NaOH;  (c) washing the ion exchange resin in (a) with a stronger solution of NaOH than used in (b); and  (d) recovering the wash solution of (c).  (a) passing a recovered solution of a cyclotron produced iodide over an anion exchange resin;  (b) washing the ion exchange resin in (a) with about a 0.002N solution of NaOH;  (c) washing the ion exchange resin in (a) with about a 0.02N solution of NaOH; and  (d) recovering the wash solution of (c).  (a) passing a recovered solution comprising iodide over an anion exchange resin;  (b) washing the ion exchange resin in (a) with a solution comprising from about 0.0005N to about 0.005N of a weak base;  (c) washing the ion exchange resin in (a) with a solution comprising from about 0.01N to about 1N of a weak base; and  (d) recovering the wash solution of (c). 2. The process of claim 1 in which the NaOH solution of (b) is from about 0.0005N to about 0.005N. 3. The process of claim 1 in which the NaOH solution of (c) is from about 0.005N to about 1.0N. 4. A process for purifying cyclotron produced .sup.123 I which comprises: 5. A process for purifying cyclotron produced radioiodides selected from the group consisting of .sup.121 I, .sup.123 I, .sup.124 I, .sup.125 I, and .sup.126 I which comprises: