Characterization of crucial fragments during the nucleation and growth of secondary organic aerosol from the high-NO photo-oxidation of α-pinene
Characterization of crucial fragments during the nucleation and growth of secondary organic aerosol from the high-NO photo-oxidation of α-pinene
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α-蒎烯高 NO 光氧化二次有机气溶胶成核和生长过程中关键碎片的表征
DOI：
10.1016/j.atmosenv.2019.05.007
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发表时间：
2019-09
影响因子：
5
通讯作者：
Haixu Zhang
中科院分区：
文献类型：
--
作者：
Peng Zhang;Pengkun Ma;Jinian Shu;Jingyun Huang;Bo Yang;Haixu Zhang
We propose the use of thermal-desorption dichloromethane-induced low-pressure photoionization mass spectrometry (TD-CH2Cl2-induced LPPI-MS) via a laboratory-built krypton vacuum ultraviolet lamp for the real-time analysis of α-pinene secondary organic aerosol (αP-SOA). Using this technology, the peak intensities of the majority of SOA were enhanced by at least two orders of magnitude after doping with 720 ppm dichloromethane. Clear temporal evolutions of the SOA oxidation products with particle formation were also observed. The molecular ion peaks atm/zvalue of 153 and 109 showed a similar sharp increase with particle-number concentration. These two species (i.e. protonated α-campholenic aldehyde or dehydrated protonated pinalic-3-acid) with the fragment atm/z153 and 109 may be critical species to prompt new particle formation. Furthermore, the monomers with the fragment ion peaks atm/zvalue of 69 and 87 (i.e. protonated pinonic acid, pinic acid, oxopinonic acid, and OH-pinonic acid etc.) were found to be intermediate species with high reactivities during SOA growth. The obtained results provide supplementary knowledge regarding the characterization and temporal evolution of the key components that promote αP-SOA formation.
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影响因子：
3.8
作者：
Scott Geddes;Brian R. Nichols;K. Todd;J. Zahardis;G. Petrucci
通讯作者：
Scott Geddes;Brian R. Nichols;K. Todd;J. Zahardis;G. Petrucci
影响因子：
5
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Geoffroy Duporté;M. Riva;J. Parshintsev;Enna Heikkinen;L. Barreira;N. Myllys;L. Heikkinen;K. Hartonen;M. Kulmala;M. Ehn;M. Riekkola
影响因子：
6.3
作者：
Ludovic Muller;M. Reinnig;J. Warnke;T. Hoffmann
通讯作者：
Ludovic Muller;M. Reinnig;J. Warnke;T. Hoffmann
影响因子：
6.3
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通讯作者：
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