辐射研究与辐射工艺学报2025，Vol.43Issue(3)：117-122,6.DOI:10.11889/j.1000-3436.2024-0086
核药厂衰变池废水及周边水样中14C的快速筛查法
A method for rapid screening of 14C in water samples from a nuclear medicine factory's decay pool and surrounding environmental water
摘要
Abstract
In order to quickly screen for the presence of 14C in target water body and provide quantitative measurement results,a rapid and accurate analysis of 14C activity concentration in samples was achieved by optimizing the counting region of the liquid scintillation spectrum and improving counting efficiency with an internal calibration method under quenching effects,resulting in a lower detection limit of 1.8 Bq/L.This method was then applied to determine the 14C activity concentration in the samples from the deday pool of a nuclear medicine factory and the surrounding environmental water.The results showed that the activity concentrations of the three samples were below the lower detection limit,whereas those of the others were within 38‒1 332 Bq/L.The accuracy of this direct analysis method was verified by using self-prepared samples with known activity concentrations,which showed a maximum deviation of 1.1%from the reference values.关键词
14C/计数区域优化/内标法Key words
14C/Counting region optimization/Internal calibration分类
能源科技引用本文复制引用
戈立新,韩刚,赵超..核药厂衰变池废水及周边水样中14C的快速筛查法[J].辐射研究与辐射工艺学报,2025,43(3):117-122,6.基金项目
国家市场监督管理总局青年拔尖人才计划项目(QNBJ202304) Supported by the State Administration for Market Regulation Innovation Talent Program(QNBJ202304) （QNBJ202304）
