气体中颗粒物质量浓度测量方法的比较研究  

Comparative study on measurement methods of particle mass concentration in gases

作　　者：胡雪花 郝敏钗 王丽佳 鲁军 李建朝 HU Xuehua;HAO Minchai;WANG Lijia;LU Jun;LI Jianchao(Intelligent Manufacturing College,Hebei Vocational and Technical University,Shijiazhuang 050091,China)

机构地区：[1]河北工业职业技术大学智能制造学院,河北石家庄050091

出　　处：《工业计量》2023年第4期18-22,26,共6页Industrial Metrology

基　　金：河北省冶金工业过程数字化控制技术创新中心(SG2021185);中央引导地方科技发展资金项目(216Z1004G);河北工业职业技术大学科研平台项目(kp202202)。

摘　　要：含颗粒物气体污染是大气污染的主要问题之一,准确快速测量污染气体颗粒物质量浓度对降低污染物排放和保护生态环境具有重要意义。文章针对现有的几种测量气体中颗粒物质量浓度方法:传统称重法、β射线滤膜质量检测法、β射线电离室法,在实际应用中的问题进行了分析。考虑到空气对β射线的衰减作用,提出一种更精确的基于β射线理论的测量气体中颗粒物质量浓度理论方法,将气体和固体颗粒物对β射线的衰减量分离计算,排除气体对颗粒物质量浓度测量值的影响。该方法具有测量精准度高、简单易操作的显著优越性,且能实时动态测算颗粒物质量浓度值,对气体颗粒物质量浓度测量技术的发展具有重要的理论指导意义。Gas containing particulate matter pollution is one of the main problems of atmospheric pollu⁃tion.It is of great significance to measure the mass concentration of particulate matter in polluted gases accurately and rapidly for reducing pollutant emissions and protecting ecological environment.In this arti⁃cle,several methods,such as weighing method,β⁃ray filter membrane quality testing method andβ⁃ray ionization chamber method,is compared in the scene of practical application.Considering the impact of air onβ⁃ray,a more accurate method is proposed.The attenuation effect of gas and solid onβ⁃ray is cal⁃culated respectively,so that the influence of gas on the measurement value is excluded.This method has significant advantages of high measurement accuracy,simplicity and ease of operation,and can dynami⁃cally calculate the mass concentration value of particulate matter in real⁃time.It has important theoretical guidance significance for the development of technology which is used to measure the mass concentration of particulate matter in gases.

关 键 词：气体颗粒物质量浓度测量 Β射线 直读法 重量法 

分 类 号：X831[环境科学与工程—环境工程]