摘要
以Ф 0.5mm×3.0mm碳棒为载体,氯化钯为前体,103Pd为放射性示踪剂,水合肼为还原剂,研究了化学沉积103Pd工艺。结果表明,化学沉积103Pd的优化条件为:2g/L PdCl2、65g/L Na2EDTA、700mL/L 25%NH3·H2O、100mL/L 5%H4N2·H2O,pH=10,时间90min,温度50℃。化学沉积103Pd溶液稳定性好,反应易进行;有95%的103 Pd沉积到载体棒上,碳棒对103 Pd的吸收仅约为12%,103Pd利用率高;沉积层呈灰白色,表面平整;化学沉积103Pd批内均匀性好,重复性好。化学沉积103Pd技术可用于制备103Pd粒子和新型103Pd-125I复合粒子。
Using φ0.5 mm×3.0 mm carbon rod as substrate, PdClz as precursor, l03Pd as radioactive tracer, and hydrazine as reductant, the process of electroless l03Pd-plating was studied. The results show that the optimum conditions of electroless l03Pd-plating are 2 g/L PdC12, 65 g/L Na2EDTA, 700 mL/L 25%NH3 · H2O, 100 mL/L 5%H4N2 · H20, pH=10, t=90 rain, and the temperature of 50 ℃. The solution has good stability. The electroless 103Pal-plating is easy to carry out. About 95% 103Pd is deposited and 12% activity is shielded by the carbon rod. The utilization rate of 103Pd in the chemical adsorption reaction is high. 103Pd-coating is grey and smooth, 103Pd-coating on each substrate of carbon rod is uniform, and the reaction can be repeated well. The technology of electroless 103Pd-plating can be applied in preparation of 103Pd seed and 103pd 125Ⅰ hybrid seed which is a new member of brachytherapy.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2013年第9期1508-1513,共6页
Atomic Energy Science and Technology
