摘要
控制区空气中HTO取样测量是工作场所环境监测的一项重要指标。试验分别用注射器鼓泡法、除湿机冷凝法、液氮冷冻法对控制区空气HTO进行快速取样并进行比较分析。结果表明:注射器鼓泡取样法取样效率未可知,现有条件下不适用;除湿机冷凝法与液氮冷冻法取样测量结果数据可靠且两者无显著差异,可互相替代。但除湿机冷凝法存在交叉污染风险且需外接电源,液氮冷冻法低温操作较危险。建议工艺间使用液氮取样法,实验室采用除湿机取样法。
HTO sampling and measurement in the radiation control area air is an important indicator of workplace environmental monitoring.In this experiment,the HTO in the radiation control area was quickly sampled and compared by syringe bubbling method,dehumidifier condensation method and liquid nitrogen freezing method.The results show that the sampling efficiency of the syringe bubbling sampling method is unknown,and it is not applicable under the existing conditions.The data of the dehumidifier condensation method and the liquid nitrogen freezing method are reliable and there is no significant difference between them,which can replace each other.However,the dehumidifier condensation method has the risk of cross-contamination,and requires external power supply,and the liquid nitrogen freezing method is dangerous and low-temperature operation.It is recommended to use the liquid nitrogen sampling method in the craft room and the laboratory uses the dehumidifier sampling method.
作者
罗雯丹
Luo Wendan(China Institute of Atomic Energy,Jiaxing 314300,China)
出处
《山东化工》
CAS
2024年第7期277-282,共6页
Shandong Chemical Industry
关键词
取样
控制区环境监测
冷凝法
鼓泡法
冷冻法
sampling
environmental monitoring in radiation control area
condensation method
bubbling method
freezing method
