首页 | 本学科首页   官方微博 | 高级检索  
     检索      

2009年8~9月成都市颗粒物污染及其与气象条件的关系
引用本文:邓利群,钱骏,廖瑞雪,佟洪金.2009年8~9月成都市颗粒物污染及其与气象条件的关系[J].中国环境科学,2012,32(8):1433-1438.
作者姓名:邓利群  钱骏  廖瑞雪  佟洪金
作者单位:四川省环境保护科学研究院,四川成都,610041
基金项目:成渝经济区重点产业发展战略环境评价
摘    要:对成都市3个不同点位PM2.5和PM10进行了为期30d的连续观测,研究了大气颗粒物浓度的时空分布特征,及其与气象条件的关系.研究表明,观测期间成都市大气颗粒物PM2.5和PM10质量浓度日均值分别为66,94μg/m3,两者浓度变化范围较大,但变化趋势相同.从空间分布来看,大气颗粒物浓度均是熊猫基地>草堂寺>丽都花园,即下风向污染状况最严重,商业繁华地段次之,生活居住区最好;从时间分布来看,大气颗粒物污染最严重出现在9月17~19日,9月5~9日2个时间段,不利的气象因素和污染物的累积是造成该时间段大气颗粒物污染加重的主要原因.PM2.5与PM10质量浓度的相关性为0.93,PM2.5对PM10的贡献较大,两者质量浓度的比值达0.69.气温对大气颗粒物浓度变化没有显著影响;降水以及风速对颗粒物浓度影响较大,主要是对颗粒物的湿清除和促进扩散作用;在一定相对湿度范围内,高湿度条件容易造成大气颗粒物的较重污染.能见度与大气颗粒物浓度呈明显负相关性,且与PM2.5的相关系数大于与PM10的相关系数.

关 键 词:成都市  大气颗粒物  污染特征  气象条件  能见度  
收稿时间:2011-12-30;

Pollution characteristics of atmospheric particulates in chengdu from August to September in 2009 and their relationship with meteorological conditions
DENG Li-qun , QIAN Jun , LIAO Rui-xue , TONG Hong-jin.Pollution characteristics of atmospheric particulates in chengdu from August to September in 2009 and their relationship with meteorological conditions[J].China Environmental Science,2012,32(8):1433-1438.
Authors:DENG Li-qun  QIAN Jun  LIAO Rui-xue  TONG Hong-jin
Institution:(Sichuan Research Institute of Environmental Protection, Chengdu 610041, China)
Abstract:Daily samples of PM2.5,PM10 were collected at three sites in Chengdu from August to September in 2009 in order to study the temporal and spatial distribution characteristics of atmospheric particulate,and their relationship with meteorological conditions.Average daily mass concentrations of PM2.5and PM10were 66 μg/m3and 94μg/m3respectively,and both had a wide concentration variation range and the same change trend during the sampling period.The mass concentrations had a spatial distribution characteristics as Panda Base > Caotang Temple > Lidu Garden,which meant that the pollution at the downwind area was most serious,followed by the commercial area and the residential area.In the viewpoint of time distribution characteristics,the atmospheric particulate pollution was most serious in the two periods of September 17th ~ 19th and September 5th ~ 9th with adverse weather conditions and pollutants accumulation being the main reasons.Correlation analysis showed that the correlation coefficient of daily mass concentrations of PM2.5 and PM10 was 0.93,and the ratio of PM2.5/PM10 was 0.69 revealing a significant contribution of PM2.5 to PM10.Temperature had no significant influence on the variation characteristics of the mass concentrations of atmospheric particulate,while precipitation and wind speed had great influence on it mainly through wet clearing and promoting diffusion.Within certain range of relative humidity,high humidity tended to cause severe pollution of atmospheric particulate pollution.A significantly negative correlation existed between the visibility and the concentration of atmospheric particulate,and the correlation coefficient between the visibility and concentration of PM2.5was greater than that of PM10.
Keywords:Chengdu  atmospheric particulate  pollution characteristics  meteorology condition  visibility  
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《中国环境科学》浏览原始摘要信息
点击此处可从《中国环境科学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号