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@ARTICLE{Schramm:857256,
author = {Schramm, Sébastien and Zannoni, Nora and Gros, Valérie
and Tillmann, Ralf and Kiendler-Scharr, Astrid and
Sarda-Estève, Roland and Bridoux, Maxime},
title = {{N}ew application of direct analysis in real time
high-resolution mass spectrometry for the untargeted
analysis of fresh and aged secondary organic aerosols
generated from monoterpenes},
journal = {Rapid communications in mass spectrometry},
volume = {33},
number = {S1},
issn = {0951-4198},
address = {New York, NY},
publisher = {Wiley Interscience},
reportid = {FZJ-2018-06485},
pages = {50-59},
year = {2019},
abstract = {RationaleSecondary organic aerosols (SOAs) represent a
significant portion of total atmospheric aerosols. They are
generated by the oxidation of volatile organic compounds
(VOCs), and particularly biogenic VOCs (BVOCs). The analysis
of such samples is usually performed by targeted methods
that often require time‐consuming preparation steps that
can induce loss of compounds and/or sample
contaminations.MethodsRecently, untargeted methods using
high‐resolution mass spectrometry (HRMS) have been
successfully employed for a broad characterization of
chemicals in SOAs. Herein we propose a new application of
the direct analysis in real time (DART) ionization method
combined with HRMS to quickly detect several hundred
chemicals in SOAs collected on a quartz filter without
sample preparation or separation techniques.ResultsThe
reproducibility of measurements was good, with several
hundred elemental compositions common to three different
replicates. The relative standard deviations of the
intensities of the chemical families ranged from $6\%$ to
$35\%,$ with sufficient sensitivity to allow the unambiguous
detection of 4 ng/mm2 of pinic acid. The presence of
oligomers and specific tracers was highlighted by MSn
(n ≤ 4) experiments, an achievement that is difficult
to attain with other ultrahigh‐resolution mass
spectrometers. Contributions of this untargeted DART‐HRMS
method were illustrated by the analysis of fresh and aged
SOAs from different gaseous precursors such as limonene, a
β‐pinene/limonene mixture or scots pines
emissions.ConclusionsThe results show that it is possible to
use DART‐HRMS for the identification of tracers of
specific aging reactions, or for the identification of
aerosols from specific biogenic precursors.},
cin = {IEK-8},
ddc = {530},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {243 - Tropospheric trace substances and their
transformation processes (POF3-243)},
pid = {G:(DE-HGF)POF3-243},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29971833},
UT = {WOS:000478091100008},
doi = {10.1002/rcm.8228},
url = {https://juser.fz-juelich.de/record/857256},
}