用β吸收法测定空气中粉尘质量的实验研究  

Beta-Absorption-Method Based Experimental Study on Dust Mass Measurement

作　　者：李静[1] 韩旻晨[1] 

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《辐射防护通讯》2001年第2期14-17,共4页Radiation Protection Bulletin

摘　　要：研究了大气中的普通粉尘质量与 β射线的吸收关系。对两组共 2 0个样品的测量结果进行分析表明 ,收集在滤纸上的粉尘质量与 β射线吸收实验之间存在着一定的比例关系 ,其相关系数为 0 .96。本工作为利用 β吸收法自动测定空气中的粉尘质量浓度提供了数据。另外 ,对于空气湿度以及滤纸均匀性对测量结果的影响也进行了实验和讨论。With the aim of developing on line and real time dust mass monitoring, a number of experiments have been done to establish the relationships between the aerosol particles collected onto a small area and the ratio of beta to radiation absorption. A total of 20 samplers, which divided into two groups, were collected, with 14 C as beta radiation source. The results of analyses indicate that a logarithm function relationship is in existence. The correlation coefficients are greater 0.96. Besides, the influence on measuring results of air humidity and sampler filter uniformity has been tested and discussed.

关 键 词：β吸收法 气溶胶粒子浓度 连续测量 空气 粉尘质量 大气污染 环境监测 

分 类 号：X831[环境科学与工程—环境工程]