计量学报2024，Vol.45Issue(2)：279-284,6.DOI:10.3969/j.issn.1000-1158.2024.02.19
全国标准级测氡仪的统一校准及低浓度测量比对
Unified Calibration and Low-Level Concentration Comparison of Standard Radon Monitors in China
摘要
Abstract
To improve the capacity of radon metrology in China,the standard radon monitors from 11 standard laboratories were calibrated uniformly.The low-level concentration comparison was conducted base on the unified calibration.The unified calibration was carried out at 700～3 000 Bq/m3 radon concentration,and the reference value of radon concentration can be traced to the primary standard of radon activity,Urel=1.6％(k=2).The range of response to reference radon atmosphere for standard radon monitors are 0.93～1.02,and the uncertainties range are 2.2％～3.6％(k=2).The low-level concentration comparison was carried out at 100～400 Bq/m3,the most standard radon monitors| En |＜1.By optimizing the strategy,it is feasible for standard radon moniters to transfer above 100 Bq/m3.However,it is necessary to improve the ability of measurement and concentration control for each laboratory to carry out transfer at concentration of 100 Bq/m3 or below.关键词
电离辐射计量/氡体积活度/标准级测氡仪/校准/国内比对Key words
ionizing radiation metrology/radon volume activity/standard radon monitor/calibration/domestic comparison分类
通用工业技术引用本文复制引用
孙昌昊,杨志杰,刘玫玲,刘皓然,张健,梁珺成..全国标准级测氡仪的统一校准及低浓度测量比对[J].计量学报,2024,45(2):279-284,6.基金项目
中国计量科学研究院基本科研业务费重点领域(AKYZD2113,AKYZD2015-1) （AKYZD2113,AKYZD2015-1）
