国际原子能机构γ能谱测量比对

International Atomic Energy AgencyγSpectrum M Ieasurement Comparison

介绍了参加国际原子能机构(IAEA)组织的全球实验室间样品能力验证概况。分析连云港辐射环境监测管理站近3年(2020~2022年)运用无源效率刻度方法分析IAEA样品,模拟出水样、生物、滤膜不同介质的效率曲线,分析样品中^(40)K、^(60)Co、^(75)Se、^(110m)Ag、^(134)Cs、^(137)Cs、^(241)Am等核素的浓度,报送34个数据的准确度和精密度均满足IAEA评估要求。验证无源效率刻度方法分析IAEA样品的实用性和可靠性,为该方法在环境辐射监测中的推广应用提供依据。

This paper introduces the general situation of sample capability verification in the global laboratories organized by the International Atomic Energy Agency(IAEA).In the last three years(2020-2022),this station used the sourceless efficiency calibration method to analyze IAEA samples,simulated the efficiency curves of water samples,organisms and different media of filter membranes,and analyzed the coneentrations of nuclides such as^(40)K,^(60)Co,^(75)Se,^(110m)Ag,^(134)Cs,^(137)Cs and^(241)Am in the samples.The accuracy and precision of 34 data submitted met the requirements of IAEA evaluation.Verify the practicability and reliability of sourceless efficiency calibration method in analyzing IAEA samples,and provide a basis for the popularization and application of this method in environmental radiation monitoring.