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@ARTICLE{Mller:23105,
author = {Müller, L. and Reinnig, M.C. and Naumann, K.H. and
Saathoff, H. and Mentel, T.F. and Donahue, N.M. and
Hoffmann, T.},
title = {{F}ormation of 3-methyl-1,2,3-butanetricarboxylic acid via
gas phase oxidation of pinonic acid - a mass spectrometric
study of {SOA} aging},
journal = {Atmospheric chemistry and physics},
volume = {12},
issn = {1680-7316},
address = {Katlenburg-Lindau},
publisher = {EGU},
reportid = {PreJuSER-23105},
pages = {1483 - 1496},
year = {2012},
note = {We thank the AIDA team at KIT for their effective support
during the measurement campaign and the EUROCHAMP-2 project
within the EC 7th framework programme for financial
support.},
abstract = {This paper presents the results of mass spectrometric
investigations of the OH-initiated oxidative aging of
alpha-pinene SOA under simulated tropospheric conditions at
the large aerosol chamber facility AIDA, Karlsruhe Institute
of Technology. In particular, the OH-initiated oxidation of
pure pinic and pinonic acid, two well-known oxidation
products of alpha-pinene, was investigated. Two
complementary analytical techniques were used, on-line
atmospheric pressure chemical ionization/mass spectrometry
(APCI/MS) and filter sampling followed by liquid
chromatography/mass spectrometry (LC/ESI-MS). The results
show that 3-methyl-1,2,3-butanetricarboxylic acid (MBTCA), a
very low volatile alpha-pinene SOA product and a tracer
compound for terpene SOA, is formed from the oxidation of
pinonic acid and that this oxidation takes place in the gas
phase. This finding is confirmed by temperature-dependent
aging experiments on whole SOA formed from alpha-pinene, in
which the yield of MBTCA scales with the pinonic acid
fraction in the gas phase. Based on the results, several
feasible gas-phase radical mechanisms are discussed to
explain the formation of MBTCA from OH-initiated pinonic
acid oxidation.},
keywords = {J (WoSType)},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK491},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000300656500016},
doi = {10.5194/acp-12-1483-2012},
url = {https://juser.fz-juelich.de/record/23105},
}