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Updated: Jun 27, 2026

Investigations on the Ga(III) Complex of EOB-DTPA and Its 68Ga Radiolabeled Analogue
Published on: August 17, 2016
Studies on controlled potential coulometric determination of gallium in sodium perchlorate and sodium thiocyanate
H S Sharma1, T K Bhardwaj, P C Jain
1Fuel Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
Abstract:
Controlled potential coulometric (CPC) studies were carried out for developing a method to determine gallium at milligram levels, in the mixed supporting electrolyte medium (4M NaClO(4)+0.5M NaSCN), employing stirring mercury as a working electrode. Investigations for optimization of working electrode potentials, quantity of charge, level of background current and electrolysis time for achieving quantitative reduction of Ga(III) to Ga and its oxidation back to Ga(III), were undertaken. Effect of gallium content and interference of zinc in of gallium determination were also studied. The developed methodology was employed for the determination of gallium in pure Ga as well as in synthetic U+Ga mixture solutions. Accuracy and precision values of better than 0.5% were obtained at 1-2mg levels.
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