武汉中心城区可吸入颗粒物连续在线观测分析研究  

Continuous Online Observation Analysis of the Inhalable Particulate Matters in Central of Wuhan City

作　　者：曹新光[1] 胡红兵[1] 

机构地区：[1]黄冈师范学院旅游文化与地理学院,湖北省黄冈市438000

出　　处：《曲阜师范大学学报（自然科学版）》2015年第2期79-83,共5页Journal of Qufu Normal University(Natural Science)

摘　　要：利用2012年11月20日-2013年1月20日武汉市环保部门监测的ρ(PM10)和ρ(PM2.5)数据,对观测期内可吸入颗粒物的统计特征进行了分析,并结合同期气象资料,分析了几种典型天气条件下ρ(PM10)和ρ(PM2.5)的日变化特征及与风速、风向的关系.结果表明:在观测期内,ρ(PM10)日均值有24d超过《国家环境空气质量标准》(GB 3095-2012)二级标准最高限值;ρ(PM2.5)有35d超过标准最高限值,超标率高达62.5%;在不同天气情况下,ρ(PM2.5)和ρ(PM10)一般在雾霾天气条件下出现高值,有降水过程时出现低值;PM2.5和PM2.5-10主要分布在风速小于4m/s范围内;ρ(PM10),ρ(PM2.5)和ρ(PM2.5-10)未出现周末效应.The statistical characteristics of inhalable particles were determined based on mass concen-tration data of PM10 and PM2.5 released in the environmental protection department in Wuhan city from No-vember 20,2012 to January 20,2013.Several typical weather conditionsρ（PM10 ）andρ（PM2.5 ）daily vari-ation characteris-tics and the relationship of mass concentration of different sized particulate matter with the wind speed and direction were analyzed separately combined with meteo-rological data during the same period.The results show that the daily average ofρ（PM10 ）was above the second standard of the national air quality standards for 24 days during the observation period.ρ（PM2.5 ）was above the standard for 35 days,accounting for 62.5% of the time.Diurnal variations ofρ（PM10 ）andρ（PM2.5 ）were obviously differ-ent among different weather conditions：it was the largest in the Dust-haze condition,and lowest in the precipitation condition.The mass concentrations of PM10 and PM2.5 mainly accumulated when the wind speed was less than 4 m/s.Observation results don’t show the weekend effect.

关 键 词：PM2.5 PM10 日变化 周末效应 

分 类 号：X513[环境科学与工程—环境工程]