Characterization of trace aerosol compositions produced during the OH radical-initiated photooxidation of beta-pinene

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	Characterization of trace aerosol compositions produced during the OH radical-initiated photooxidation of beta-pinene
	Zhang, Peng ; Huang, Jingyun ; Shu, Jinian ; Ma, Pengkun ; Yang, Bo
刊名	ATMOSPHERIC ENVIRONMENT
	2019-08-15
卷号	211 页码:1-5
关键词	beta-Pinene Photooxidation Secondary organic aerosol Chemical composition Organic nitrate
ISSN号	1352-2310
英文摘要	The detailed molecular composition of laboratory-generated secondary organic aerosols (SOA) during the high-NO photooxidation of beta-pinene (beta P) was investigated using a novel thermal desorption dichloromethane-assisted low-pressure photoionization mass spectrometry (TD-CH2Cl2-assisted LPPI-MS) technique. We found that protonated norpinone gave the highest signal intensity, which supported that assumption that this compound was the key oxidation species responsible for promoting beta P-SOA formation. In addition to the previously identified monomers (i.e., 2,2-dimethylcyclobutyl-1,3-dicarboxaldehyde (m/z 140), pinene aldehyde (m/z 150), myrtenol (m/z 152), (2,2-dimethyl-3-acetyl)-cyclobutylformate (m/z 156), pinene acid (m/z 166), and isomers of pinalic-3-acid (m/z 170)), two additional nitrogen-containing species (i.e., C-10 hydroxy nitrate and C-10 carbonyl nitrate) were also observed at m/z values of 214 and 216 in the mass spectrum of beta P-SOA. Furthermore, the losses of 18 (H2O), 46 (NO2), and 64 (H2O + NO2) were attributed to the typical fragmentation pathways of the two nitrogen-containing species. Overall, these results not only contribute to an improved understanding of beta P-SOA formation, but they also indicate that TD-CH2Cl2-assisted LPPI-MS can be used as a novel detection means to study SOA formation.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43131]
专题	生态环境研究中心_大气环境科学实验室
作者单位	1.Chinese Acad Sci, State Key Lab Environm Simulat & Pollut Control, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Natl Engn Lab VOCs Pollut Control Mat & Technol, Beijing 101408, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Peng,Huang, Jingyun,Shu, Jinian,et al. Characterization of trace aerosol compositions produced during the OH radical-initiated photooxidation of beta-pinene[J]. ATMOSPHERIC ENVIRONMENT,2019,211:1-5.
APA	Zhang, Peng,Huang, Jingyun,Shu, Jinian,Ma, Pengkun,&Yang, Bo.(2019).Characterization of trace aerosol compositions produced during the OH radical-initiated photooxidation of beta-pinene.ATMOSPHERIC ENVIRONMENT,211,1-5.
MLA	Zhang, Peng,et al."Characterization of trace aerosol compositions produced during the OH radical-initiated photooxidation of beta-pinene".ATMOSPHERIC ENVIRONMENT 211(2019):1-5.