TiO Decorated Low-Molecular Chitosan a Microsized Adsorbent for a Ge/Ga Generator System.

We report column material for a Ge/Ga generator with acid resistance and excellent adsorption and desorption capacity of Ge and Ga, respectively. Despite being a core element of the Ge/Ga generator system, research on this has been insufficient. Therefore, we synthesized a low molecular chitosan-based TiO (LC-TiO) adsorbent via a physical trapping method as a durable Ge/Ga generator column material. The adsorption/desorption studies exhibited a higher separation factor of Ge/Ga in the concentration range of HCl examined (0.01 M to 1.0 M). The prepared LC-TiO adsorbent showed acid resistance capabilities with >93% of Ga elution yield and 1.6 × 10% of Ge breakthrough. In particular, the labeling efficiency of DOTA and NOTA, by using the generator eluted Ga, was quite encouraging and confirmed to be 99.65 and 99.69%, respectively. Accordingly, the resulting behavior of LC-TiO towards Ge/Ga adsorption/desorption capacity and stability with aqueous HCl exhibited a high potential for ion-exchange solid-phase extraction for the Ge/Ga generator column material.