空气自动监测中PM_(2.5)与PM_(10)“倒挂”现象特征及原因  

The Characteristic and Reason about the Reversal Between PM_(2.5) and PM_(10) in Ambient Air Quality Automatic Monitoring

作　　者：潘本锋[1] 郑皓皓[1] 李莉娜[1] 汪巍[1] 

机构地区：[1]中国环境监测总站,国家环境保护环境监测质量控制重点实验室,北京100012

出　　处：《中国环境监测》2014年第5期90-95,共6页Environmental Monitoring in China

基　　金：中国工程院2013年咨询研究项目"我国环境空气PM2.5例行监测技术体系与研究性监测技术体系研究"(2013-ZD-2-5-1)

摘　　要：采用不同原理的自动监测仪器在不同季节同时测定PM2.5与PM10,对所得数据中的PM2.5与PM10"倒挂"现象进行分析。结果表明,当PM10采用振荡天平法时,PM2.5与PM10的"倒挂"率较高;冬季和夏季"倒挂"现象发生率明显高于其他季节;造成PM2.5与PM10"倒挂"的原因主要有监测过程中的随机误差,PM2.5与PM10的监测方法原理不同,监测方法之间存在显著差异等。Monitored PM using some different kinds of monitoring devices simultaneously in different seasons,analysised the revesal phenomenon between PM2. 5and PM10,result showed that when use a tapered element oscillating microbalance（ TEOM）device to monitor PM10,could get more reverse data between PM2. 5and PM10 than using a beta attenuation monitor,in different seasons,the probability of reversal was higher in summer and winter. Analysed the monitoring principle and method about PM2. 5and PM10,and the structure of all kinds of monitoring instruments,we could come to the conclusion that the main reason cause the reversal between PM2. 5and PM10,included that stochastic error,difference among all kinds of monitoring methods,and so on.

关 键 词：PM2.5 PM10 环境空气自动监测 “倒挂”现象 

分 类 号：X830.3[环境科学与工程—环境工程]