title: [Study on transformation mechanism of SOA from biogenic VOC under UV-B condition].
abstract: A laboratory study was carried out to investigate the biogenic volatile organic compounds (BVOC) in a lab-made glass chamber. The secondary organic aerosol (SOA) products can be detected under the UV photooxidation of BVOC. Pelargonium x Citrenella was chosen as the target plant in this research because it can release a large amount of BVOCs. The predominant 7 alkene and ketol compounds were detected by using solid phase microextraction (SPME) sampling and gas chromatography/mass spectrometry (GC/MS) analysis. The photochemical experiment indicated that these BVOC can be rapidly oxidized into SOA under UV-B irradiation. A tandem differential mobility analyzer (TDMA) was used to measure the size distribution and the hygroscopicity of the SOA. The particle diameter was in the range of 50 nm to 320 nm. The high hygroscopicity of SOA was also obtained and the size increased from 1.05 to 1.11 during the wet experiment.
authors.affiliation: Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. lyyforward@gmail.com
authors.forename: Ying-Ying
authors.initials: YY
authors.lastname: Li
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.forename: Jian-Min
authors.initials: JM
authors.lastname: Chen
mesh_terms: D000336:Aerosols / Q000737:chemistry*; D000393:Air Pollutants / Q000032:analysis / Q000378:metabolism*; D000475:Alkenes / Q000032:analysis; D004784:Environmental Monitoring; D031316:Pelargonium / Q000254:growth & development / Q000378:metabolism; D063245:Plant Development; D010944:Plants / Q000378:metabolism*; D014466:Ultraviolet Rays; D055549:Volatile Organic Compounds / Q000378:metabolism* / Q000528:radiation effects
chemical_list: D000336:Aerosols; D000393:Air Pollutants; D000475:Alkenes; D055549:Volatile Organic Compounds