HE Yao1, 2 ， HUANG Rujin1 ， WANG Qiyuan1 ， WANG Yichen1, 2 ， CAO Junji1
（1. Key Laboratory of Aerosol Chemistry and Physics， State Key Laboratory of Loess and Quaterbary Geology， Institute of Earth Environment， Chinese Academy of Science， Xi’an 710061 China； 2. College of resources and environment， University of Chinese Academy of Sciences， Beijing 100049， China）
Abstract：Field observations based on aerosol mass spectrometers in Beijing-Tianjin-Hebei region, Yangtze River Delta and Pearl River Delta s were summarized in this study, and the temporal and spatial variation of chemical composition and source of submicron aerosols was discussed. The results show that the average mass concentration of NR-PM1 in the three regions range between 15.3and 67.9 μg/m3, the highest is in Beijing-Tianjin-Hebei region and the lowest is in Pearl River Delta. Organic aerosol is the major component of NR-PM1 in each region, accounting for 24%~58%.In the Pearl River Delta, the mass fraction of sulfate is significantly higher than that in the other two regions, and that of nitrate is significantly lower. In general, the concentrations of NR-PM1 in autumn and winter are higher than those in spring and summer, mainly due to the increase of organic (BBOA, CCOA) and inorganic (chlorinated) components from combustion emissions. It is also found that HOA and SOA are widespread in all sites of the three regions, while COA is generally found in urban sites. BBOA is widely distributed in Yangtze River Delta and Pearl River Delta, CCOA, however, only existed in Beijing-Tianjin-Hebei region.
Keywords: NR-PM1; source appointment; temporal and spatial distribution
文章编号：1008-5548（2017）03-0001-10
DOI：10.13732/j.issn.1008-5548.2017.03.001
收稿日期：2017-03-28， 修回日期：2017-05-15，在线出版时间：2017-06-28。
基金项目：国家自然科学基金项目，编号：21661132005。
第一作者简介：何瑶（1992—），女，硕士研究生，研究方向为气溶胶来源解析。E-mail：heyao@ieecas.cn。
通信作者简介：
黄汝锦（1979—），男，博士，研究员，博士生导师，研究方向为气溶胶来源解析。E-mail：rujin.huang@ieecas.cn；
曹军骥（1971—），男，博士，研究员，博士生导师，研究方向为气溶胶与环境。E-mail：cao@loess.llqg.ac.cn。
