三种分离富集气态<sup>14</sup>C流出物方法的效果初步探讨

doi:10.13491/j.issn.1004-714X.2024.04.003

中国辐射卫生

2024, Vol. 33

Issue (4): 364-369 DOI: 10.13491/j.issn.1004-714X.2024.04.003

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三种分离富集气态¹⁴C流出物方法的效果初步探讨

张彦彪, 汪传高, 郭庐阵, 邬蒙蒙, 庞洪超, 骆志平, 陈凌

中国原子能科学研究院, 北京 102413

Preliminary study on the effectiveness of three separation and enrichment methods for gaseous ¹⁴C effluent

ZHANG Yanbiao, WANG Chuangao, GUO Luzhen, WU Mengmeng, PANG Hongchao, LUO Zhiping, CHEN Ling

China Institute of Atomic Energy, Beijing 102413 China

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摘要目的考察膜分离、吸附分离和低温分离3种物理分离气态¹⁴C方法的分离效果，筛选出最佳分离方法，为¹⁴C在线监测中¹⁴CO₂的分离富集提供参考。方法设计实验方案，分别搭建3种分离实验装置进行分离纯化实验，对3种方法分离CO₂的纯度、回收率及分离时间进行分析。结果 3种分离方法对CO₂均有一定分离效果，在一定条件下获得20 mL样品气体，膜分离法需用时0.5 h获得样品纯度为0.0486%～0.0488%VOL的CO₂的气体，回收率仅为2.5%～12.7%；MOF材料吸附分离法需消耗24～30 h，获得样品纯度为20.2%～47.5%VOL的CO₂的气体，回收率为57.3%～63.2%；低温分离法则要消耗3 h，可获得样品纯度为96.0%～99.8%VOL的CO₂的气体，回收率为81.5%～92.5%。结论低温分离法分离得到CO₂纯度和回收率要比膜分离法和MOF材料吸附分离法高，分离时间适中，可为实现气态¹⁴C流出物快速测量中¹⁴C的富集技术提供参考。

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	张彦彪
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	骆志平
	陈凌

关键词 ：分离, 气态¹⁴C, 纯度, 回收率, 时间, 在线监测

收稿日期: 2024-02-01

PACS:

TL75

作者简介: 张彦彪（1989—），男，河南安阳人，工程师，在读博士研究生，现从事辐射防护及环境保护方面研究。E-mail：yanbiaoz@163.com

引用本文:

张彦彪, 汪传高, 郭庐阵, 邬蒙蒙, 庞洪超, 骆志平, 陈凌. 三种分离富集气态¹⁴C流出物方法的效果初步探讨[J]. 中国辐射卫生, 2024, 33(4): 364-369.
ZHANG Yanbiao, WANG Chuangao, GUO Luzhen, WU Mengmeng, PANG Hongchao, LUO Zhiping, CHEN Ling. Preliminary study on the effectiveness of three separation and enrichment methods for gaseous ¹⁴C effluent. Chinese Journal of Radiological Health, 2024, 33(4): 364-369.

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http://www.zgfsws.com/CN/10.13491/j.issn.1004-714X.2024.04.003 或 http://www.zgfsws.com/CN/Y2024/V33/I4/364

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