Analysis of tritium activity concentrations in urine and internal dose assessment for nuclear power plant workers
Analysis of tritium activity concentrations in urine and internal dose assessment for nuclear power plant workers作者机构：National Center for Occupational Safety and HealthNational Health CommissionBeijing102308China
出 版 物：《Radiation Medicine and Protection》 (放射医学与防护（英文）)
年 卷 期：2021年第2卷第1期
页 面：1-4页
学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学]
基 金：This work was supported by Environmental Radioactivity Research Network Center(Japan,Grant Number:I-20-15) the Key Program of Tianjin Municipal Natural Science Foundation(China,Grant Number:19JCZDJC40500)
主 题：Tritium Occupational exposure Urine Internal dose Nuclear power plant
摘 要：Objective:To investigate the activity concentration of tritium in urine of nuclear power plant(NPP)workers,in order to evaluate the occupational exposure ***:Three chosen NPPs were respectively located in southern,southeastern and northeastern *** involved in operating,service,nuclear cleaning,chemical analysis,health physics,technical support,among others were randomly selected as the research targets,and 69 urine samples of no less than 50 mL were *** oxidative distillation method was used to pretreat the urine samples,and the activity concentration of tritium in distillate was then measured using liquid scintillation *** formula for the committed effective dose was also applied used to estimate the internal ***:The highest tritium activity concentrations in urine samples from three NPPs were 2412.7,6351.4,and 478.7 Bq/L,***,the internal doses due to tritium intake were 1.8,4.8 and 0.4μSv,***:The urine tritium activity concentration of workers varied greatly dependent on their job *** values for urine tritium radioactivity concentrations of workers involved in health care,nuclear cleaning and maintenance were generally higher than those for other job *** difference in urine tritium activity concentration mainly came from the different exposure time and tritium *** the dose assessment results,the internal dose caused by tritium intake did not exceed the public annual effective dose limit.
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