Distribution Characteristics of Aromatic Acids in Fine Aerosol Particles in Beijing, China
Aerosol particles were collected by using a versatile air pollutants sampler (URG-300K) in Beijing in the four seasons from July 2008 to June 2009. A gas chromatography-mass spectrometry method was developed which is able to characterized 20 aromatic acids in the fine aerosol particles. By the application of this method it was found that 19 aromatic acids were detected in the fine aerosol particles in Beijing. The results indicated that the aromatics had the similar distribution pattern in the four seasons, but the daily average values of the concentrations of each aromatic acid showed seasonal variations due to the combined influences of the source emission characteristics, the chemical transformation mechanism and the meteorological factors. In each season, 1, 4-Benzenedicarboxylic acid had the highest concentrations within the 7 groups of aromatic acids; 1, 2-Benzenedicarboxylic acid had close relationship with ozone and sulfate. Further investigation is needed to clarify whether the close relationship between 1, 2- Benzenedicarboxylic acid with ozone and sulfate is caused by new particle formation process or by the secondary formation process.
Fine aerosol particles Aromatic acids Distribution characteristics Beijing
Hong Li Fahe Chai Xinming Wang Liqun Deng Runxiang Ni Xiaoxiu Lun Yizhen Chen
Chinese Research Academy of Environmental Science,Beijing 100012,China Guangzhou Institute of Geochemistry,Guangzhou 510640,China Beijing Forestry University,Beijing 100083,China China University of Mining and Technology,Beijing 100083,China
国际会议
西安
英文
125-128
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）