原子能科学技术2016，Vol.50Issue(10)：1915-1920,6.DOI:10.7538/yzk.2016.50.10.1915
活性炭吸附-液闪法测量建材氡析出率的研究
Research on Measurement of Radon Exhalation Rate in Building Material Using Active Carbon Adsorption-Liquid Scintillation Method
摘要
Abstract
In order to achieve automatic measurement of radon exhalation rate in build‐ing materials ,an active carbon adsorption‐liquid scintillation method was introduced .By comparing the measurement results of this method with the active carbon absorption‐γenergy spectrum method on the surfaces of the radon exhalation standard device ,urani‐um ore brick and foaming ,the accuracy of this method was verified .The results show that the active carbon adsorption‐liquid scintillation method can ignore the effect of back‐diffusion under certain conditions . Based on the C‐LS‐Rn standard source , the calibration coefficient of this method is 72.36 min-1 ・Bq-1 .The counting efficiency of radon is 120% by this method .The minimum detectable radon exhalation rate is 8.15 × 10-4 Bq/(m2 ・s) when cumulative time is 72 h .The relative deviation of measurement results between these two methods is about 10% ,within the acceptable range .关键词
氡析出率/活性炭/液闪/建材Key words
radon exhalation rate/active carbon/liquid scintillation/builiding material分类
资源环境引用本文复制引用
刘茹佳,唐泉,丘寿康,吴淼,陈颖..活性炭吸附-液闪法测量建材氡析出率的研究[J].原子能科学技术,2016,50(10):1915-1920,6.基金项目
国家自然科学基金资助项目（11275094）；中国科学院战略性先导科技专项资金资助项目 （）
