玛辐射对AG MP-50阴离子交换树脂和硫化活性炭对木-213分离的影响
Hongshan Zhu1,2,3, Stephan Heinitz1, Samuel Eyley4
1Belgian Nuclear Research Centre (SCK CEN), Institute for Nuclear Materials Science Boeretang 200, Mol B-2400 Belgium thomas.cardinaels@sckcen.be.
RSC advances
|October 26, 2023
概括
医疗放射性核化物发生器中吸附剂的辐射损伤是令人担忧的. 硫化活性炭 (SAC) 显示出比225Ac/213Bi发电机的AG MP-50阴离子交换树脂更好的放射性稳定性.
科学领域:
- 放射化学 放射化学是指辐射化学.
- 材料科学 材料科学 材料科学
- 核医学是一种核医学.
背景情况:
- 医疗放射性核酸生成器,特别是225Ac/213Bi系统,对于局部癌症治疗至关重要.
- 吸附剂材料的辐射诱导降解是影响发电机性能和寿命的重大挑战.
研究的目的:
- 调查玛辐射对AG MP-50阴离子交换树脂和硫活性炭 (SAC) 的影响.
- 评估辐射对材料形态,功能组和La3+/Bi3+吸附能力的影响.
- 根据放射性稳定性,评估AG MP-50和SAC适用于225Ac/213Bi放射性核化物发生器的适用性.
主要方法:
- AG MP-50和SAC暴露在高达11MGy的马辐射中.
- 使用SEM和XRD分析形态变化.
- 功能组的表征和表面化学.
- 在不同pH值下评估La3+和Bi3+吸附性能.
主要成果:
- AG MP-50表现出硫酸组的严重降解和变化的粒子形态,导致La3+/Bi3+吸附显著减少.
- 在辐射后,SAC没有明显的形态变化.
- 经辐射的SAC由于氧化而增加了表面氧含量,在pH1和pH2时La3+/Bi3+吸附性能基本不变.
结论:
- 与AG MP-50阴离子交换树脂相比,硫化活性炭 (SAC) 的放射性稳定性优越.
- 由于其抗辐射性能,SAC是225Ac/213Bi放射性核化物发生器实际实施的有希望的材料.
- 这些发现支持使用AG MP-50和SAC,SAC在225Ac/213Bi发电机应用中提供了更好的耐用性.
相关概念视频
01:17Ion Exchange
600
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
600
01:25Imaging Studies II: Positron Emission Tomography and Scintigraphy
130
Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET
Fundamental Principles of PET
130