Characterization and Intercomparisons of Fully Automated Atmospheric Radon Monitoring Instrument

德雷克塞尔大学为直接分析偏远海洋大气中的大气氡而开发的自动氡监测仪已在百慕大投入使用一年多。拟议项目的目的是在实验室和实地开展一系列研究，充分确定影响实地测氡仪总体分析效率的仪器和采样属性，以验证方法和分析结果。特性研究的目的是提供：1.评估氡采样的效率及其对工作温度的依赖。2.校准百慕大仪器中已投入使用的六个卢卡斯电池的计数效率。3.使用双盲标准加法校准百慕大仪器和第二个新仪器。4.利用独立裁判，将两台德雷克塞尔仪器的现场分析和实验室分析与能源部环境测量实验室、澳大利亚核技术组织和法国国家核研究中心的环境测量实验室的仪器进行对比。//

An automated radon monitoring instrument developed at Drexel University for the direct analysis of atmospheric radon in the remote marine atmosphere has been in operation in Bermuda for more than a year. The purpose of the proposed project is to perform a series of studies in the laboratory and in the field to characterize fully the instrumental and sampling attributes affecting the overall analytical efficiency of the field radon instrument in order to validate the methodology and the analytical results. The characterization studies are designed to provide: 1. Assessment of the efficiency of radon sampling and its dependency upon operating temperatures. 2. Calibration of the counting efficiency of each of the six Lucas cells which have been operational in the Bermuda instrument. 3. Calibration of the Bermuda instrument and a second new instrument using double blind standard additions. 4. Intercomparison, using an independent referee, of both field and laboratory analyses by the two Drexel instruments with instruments of the Environmental Measurements Laboratory of the Department of Energy, the Australia Nuclear and Technology Organization, and the Centre des Faibles Radioactivities, CNRS, France. //