核设施液态流出物中<sup>90</sup>Sr的自动化放化分析系统

核设施液态流出物中⁹⁰Sr的自动化放化分析系统

摘要: 以固相萃取片富集和纯化Sr，以盖革计数器定量测量片上⁹⁰Sr含量，结合电磁阀、可编程逻辑控制器等，研制了核设施液态流出物中⁹⁰Sr自动化分析系统。该系统实现了取样、⁹⁰Sr富集和纯化、⁹⁰Sr活度测量的全过程自动化。样品分析时间约30 min，探测限低于1 Bq/L，可满足核设施液态流出物中⁹⁰Sr的分析要求。

Abstract: Radiochemical analysis auto-system of ⁹⁰Sr in liquid effluent from nuclear facilities was developed by using solid phase extraction disk to absorb Sr, Geiger counter to measure the activity of ⁹⁰Sr, solenoid valves and programmable controllers and so on. The system realizes the automation of sampling, enrichment, purification and activity measurement. The analysis time is about 30 min and the detection limit is less than 1 Bq/L, which can meet the requirement of ⁹⁰Sr analysis in liquid effluent from nuclear facilities.