湿度变化对TEOM~1400a系列环境颗粒物监测仪PM_(10)质量浓度观测的影响  

Humidity Variation Influence on TEOM~Series 1400a Ambient Particulate Monitorin PM_(10) Measurement

作　　者：屈文军[1] 张小曳[2] 王丹[1] 赵元茂[3] 王亚强[1] 曹国良[1] 严立文[1] 

机构地区：[1]中国科学院地球环境研究所 [2]中国气象科学研究院,北京100081 [3]云南省气象科学研究所,云南昆明650034

出　　处：《中国粉体技术》2006年第2期1-3,共3页China Powder Science and Technology

基　　金：国家自然科学基金重点项目(编号:901022017);国家基础研究发展规划项目(编号:G2000048703);中国科学院黄土与第四纪地质国家重点实验室开放基金(编号:SKLLQG0526)。

摘　　要：为评价环境湿度变化对TEOM1400a·系列环境颗粒物监测仪进行PM10观测的影响,在2004年1月到2005年1月的观测过程中,获得了30 min平均的大气PM10质量浓度,并观测了地面气象条件及降水过程中仪器的响应.结果表明,湿度变化较大时仪器记录的PM10浓度明显受到滤膜上吸附的水汽含量变化的影响.仪器提供的PM10质量浓度反映出明显的日变化规律,分别在8：00～9：30和18：00～23：00出现峰值而在12：00～15：30出现谷值;此变化规律反映了大气污染物的日变化特征,但也受到空气湿度变化的影响.应用该仪器时对空气湿度的影响应当予以考虑.The 30-minute average atmospheric PM10 concentration was observed during Jul, 2004 to Jan, 2005 to evaluate the air humidity influence on application of TEOM series 1400a ambient particulate monitor in PM10 measurement. The meteorological conditions near the surface, and the response of the monitor during precipitation course were also observed. The results indicated that PM10 mass concentration reported by the monitor was influenced significantly by the change of absorbed moisture content on the filter when ambient humidity varied greatly. The PM10 concentration reported by the monitor shows obviously the daily variability, that is, peak values emerge during 8：00-9：30 and 18：00-23：00, while minimum value emerges during 12：00-15：30. This characteristic is corresponding with daily variability of atmospheric pollutant. The changing pattern of PM10 mass concntration is also influenced by the air humidity which should be considered when using this monitor.

关 键 词：大气颗粒物 PM10质量浓度 湿度 

分 类 号：X513[环境科学与工程—环境工程]