Adsorption and Purification of Radiogallium in Hydrochloric Acid and Metal Chloride Solutions by Non-ionic Resin of Macro-reticular Type

Abstract

Adsorption behavior of radiogallium (⁶⁷Ga, ⁶⁸Ga) on non-ionic MR resin (XAD-7) from hydrochloric acid, lithium chloride and other metal chloride solutions, and purification of ⁶⁸Ga by this resin were studied.
Radiogallium was adsorbed on XAD-7 rapidly and quantitatively from the solution of higher chloride concentration than 6M. The adsorption behavior is similar to that obtained with ⁵⁹Fe and ¹⁹⁵Au previously.
Based on adsorption data, elimination of trace amount of ⁶⁸Ge commonly contained in ⁶⁸Ga milked from a ⁶⁸Ge/⁸⁸Ga generator was tried. When ⁶⁸Ga-6M hydrochloric acid solution containing ⁶⁸Ge was passed through a XAD-7 column, all the activity was transferred on the column. After eliminating ⁶⁸Ge fraction with 3M hydrochloric acid, ⁶⁸Ga was obtained in high purity by eluting with 0.1M hydrochloric acid.