西安市高分辨率PM_(2.5)质量浓度变化特征分析  

Analysis of PM_(2.5) Mass Concentrations Variation with High Resolution in Xi'an City

作　　者：陶李[1] 张承中[1] 周变红[1] 张碧云[1] 刘立忠[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《环境科技》2011年第A01期63-64,67,共3页Environmental Science and Technology

基　　金：国家支撑计划项目(2008BAC46B0);上海市科技支撑计划(09dz1204402);国家本科生创新基金项目

摘　　要：利用美国R&P公司1400a锥形震荡天平(TEOM)自动在线监测仪获取了200903～201002西安市PM2.5质量浓度实时连续监测值,并进行分析。结果表明,PM2.5小时质量浓度变化起伏较大,全年PM2.5小时质量浓度最大值为630.4μg/m3,节日的烟花燃放能造成瞬间的PM2.5严重污染。四季PM2.5浓度日循环变化规律明显,大致均呈现双峰模式,高峰值点出现在10:00～11:00左右和21:00～22:00左右,低峰值点出现在4:00～5:00和17:00～18:00左右。The dates of real time hourly PM2.5 mass eoncentrations was obtained and analyzed during Mar, 2009 to Feb, 2010 in Xi＇an with the instrument of R ＆ P TEOM？ Series 1400. The results shows that the variation of hourly PM2.5 mass eoneentrations is more obvious. The maximum of PM2.5 mass eoneentrations is 630.4 μg/m3 in the year. Fireworks in festivals ean cause serious pollution of PMzs. Pronounced diurnal eyele in PMz5 concentrations is evident in four seasons, and display a hi-modal pattern with signifieant high peaks between 10：00 to 11：00 and 21：00 to 22：00, and with low peaks between 17： 00 to 18：00.

关 键 词：PM2.5 锥形震荡天平 日变化特征 

分 类 号：X8[环境科学与工程—环境工程]