| ~(14)C-碳酸钠测量方法的改进 |
| |
| 引用本文： | 赵启仁,林汉.~(14)C-碳酸钠测量方法的改进[J].核技术,1985(1). |
| |
| 作者姓名： | 赵启仁 林汉 |
| |
| 作者单位： | 中国医学科学院放射医学研究所
(赵启仁)，中国医学科学院放射医学研究所(林汉) |
| |
| 摘 要： | 本文介绍用液体闪烁技术测量Na_2~(14)CO_3或NaH~(14)CO_3的一种改进方法。在一定量的蒸馏水中加入适量的Na_2CO_3载体和NaOH,再加一定量的待测Na_2~(14)CO_3溶液,制成供测量用的放射性浓度适中的Na_2~(14)CO_3贮备液。在甲苯/Triton X-100闪烁系统(PPO4g,POPOP 0.25g,Triton X-100 165ml,加甲苯至500ml)中加入DL-α-苯乙胺,最后加入Na_2~(14)CO_3贮备液,制备样品。用样品道比法测定效率。每日测量一次,在连续测量的9天中,未发现~(14)C损失,也未发现存在化学发光,探测效率约为83％。
|
| 关 键 词： | 液体闪烁技术 样品道比法 ~(14)C-碳酸钠 ~(14)C-碳酸氢钠 样品制备 |
An improved method for counting the radioactivity of Na_2~(14)CO_3 |
| |
| Zhao Qiren Lin Han.An improved method for counting the radioactivity of Na_2~(14)CO_3[J].Nuclear Techniques,1985(1). |
| |
| Authors: | Zhao Qiren Lin Han |
| |
| Abstract: | In this paper an improved method for counting the radioactivity of Na214CO3 by liquid scintillation technique is reported. Na214CO3 solution was added into toluene/Triton X-100 scintillator which was mixed with CO2 trapping agent, DL-a-phenylethylamine. The radioactivity of Na214CO3 was measured for nine days with no observed radioactivity loss. The radioactivity recovery was about 96-102% and the counting efficiency was about 83%. |
| |
| Keywords: | liquid scintillation technique method of sample chennel ratio 14C-Na2CO3 14C-NaHCO3 sample preparation |
| 本文献已被 CNKI 等数据库收录！ |
