北京2009-2010年冬,春季PM2.5污染特征

doi:10.3969/j.issn.1000-6923.2016.09.003

CORC > 北京大学 > 环境科学与工程学院

	北京2009-2010年冬,春季PM2.5污染特征; Characteristics of PM2.5 pollutionin winter and spring of Beijing during 2009~2010
	顾芳婷 ; 胡敏 ; 王渝 ; 李梦仁 ; 郭庆丰 ; 吴志军
刊名	中国环境科学
	2016
关键词	北京冬季春季化学组分 PM2.5 Beijing PM2.5 winter spring chemical composition
DOI	10.3969/j.issn.1000-6923.2016.09.003
英文摘要	针对北京地区冬季和春季PM2.5污染特征进行研究.于2009年12月~2010年5月在城市点采集24h 大气颗粒物样品，进行颗粒物主要化学组分分析.冬季和春季颗粒物的平均质量浓度分别为(84.97±68.98)μg/m3和(65.25±45.76)μg/m3.冬季和春季颗粒物中二次组分(SNA+SOA)有重要贡献，二次组分分别占颗粒物质量浓度的49%和47%.冬春季重污染时期较强的源排放和低温、低风速、高相对湿度等不利的气象特征使得颗粒物中二次无机离子SNA (NH4+、NO3?、SO42?)的比重较干净天明显上升，其中硝酸盐贡献的增强最为显著.同时冬春季有机物中二次有机组分贡献显著.而受一次源的影响，冬春季重污染时期一次有机物的增强.; A comprehensive measurement was conducted to investigate thecharacteristics of particulate matter (PM) pollution in winter and spring of Beijing. 24-hour particle samples were collected from December to May, 2009~2010, and the chemical compositions of PM2.5 were analyzed. The average PM2.5 massconcentrations were (84.97±68.98)μg/m3 and (65.25±45.76) μg/m3 in winter and spring, respectively. Secondary inorganic aerosols, i.e. sulfate, nitrate, andammonium (SNA), and secondary organic aerosols (SOA) were dominant theparticulate matter, with the total fraction (SNA+SOA) of 49% and 47% in winter and spring, respectively. Due to the largesource emissionand unfavorable meteorological conditions such as low temperature, low wind speed, and high relative humidity; the contributions of secondary inorganic aerosols (NH4+、NO3-、SO42-) were enhanced during thepolluted days, and the nitratewas more enhanced on polluted days. The SOA was always the most importantorganic aerosolcomponentcontributedto PM2.5 in winter and spring. The contribution ofprimary organicaerosolsalso increased due tothe stagnant meteorological condition on polluted days.; 国家自然科学基金; 中国科学院战略性先导科技专项; EI; 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 9; 2578-2584; 36
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/450016]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	顾芳婷,胡敏,王渝,等. 北京2009-2010年冬,春季PM2.5污染特征, Characteristics of PM2.5 pollutionin winter and spring of Beijing during 2009~2010[J]. 中国环境科学,2016.
APA	顾芳婷,胡敏,王渝,李梦仁,郭庆丰,&吴志军.(2016).北京2009-2010年冬,春季PM2.5污染特征.中国环境科学.
MLA	顾芳婷,et al."北京2009-2010年冬,春季PM2.5污染特征".中国环境科学 (2016).