Radiation effects on ion-exchange resins. Part III. Alpha irradiation of Dowex 50W

Gamma radiation effects on AG MP-50 cation exchange resin and sulfonated activated carbon for bismuth-213 separation

“…4,22,23 As previously reported, the decrease in sorption capacity of Dowex 50W-X4 (an analog of AG MP-50) towards yttrium was larger aer exposure to alpha radiation compared to the same dose of gamma radiation. 4,22,23 The radiation-induced damage could be primarily due to the ionizing radiation absorbed by the sorbents (direct effects) or reactions between radiolysis products in solution and the sorbents (indirect effects). 24 There might be no signicant difference in the indirect effects of either alpha or gamma irradiation, as opposed to direct effects.…”

“…24 There might be no signicant difference in the indirect effects of either alpha or gamma irradiation, as opposed to direct effects. 22 While gamma irradiation may not fully reect the real situation of 225 Ac irradiation, the ndings presented in this study can provide essential preliminary information for further research. Moreover, this research can also yield useful insights for other elds, such as surface modications of materials by gamma irradiation.…”

“…4,22,23 It should be noted, however, that alpha irradiation typically causes larger damage to the sorbents compared to gamma irradiation. 4,22,23 As previously reported, the decrease in sorption capacity of Dowex 50W-X4 (an analog of AG MP-50) towards yttrium was larger aer exposure to alpha radiation compared to the same dose of gamma radiation. 4,22,23 The radiation-induced damage could be primarily due to the ionizing radiation absorbed by the sorbents (direct effects) or reactions between radiolysis products in solution and the sorbents (indirect effects).…”

“…21 Furthermore, compared to alpha and beta irradiation, gamma irradiation can be carried out without the risk of contaminating the irradiated materials. 4,22,23 It should be noted, however, that alpha irradiation typically causes larger damage to the sorbents compared to gamma irradiation. 4,22,23 As previously reported, the decrease in sorption capacity of Dowex 50W-X4 (an analog of AG MP-50) towards yttrium was larger aer exposure to alpha radiation compared to the same dose of gamma radiation.…”

225Ac/213Bi radionuclide generators for the separation of 213Bi towards clinical demands

“…As most of the adsorbents are prone to radiolytic damage, a safe and sustainable operation to obtain high-activity 213 Bi for medical applications is compromised. 48,109,[132][133][134] 4.3.2 Two-column direct 225 Ac/ 213 Bi generators. A twocolumn direct 225 Ac/ 213 Bi generator system is used to increase the purity and concentration of 213 Bi eluates.…”