Gutenberg Open Science: Varying chiral ratio of pinic acid enantiomers above the Amazon rainforest

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-8933

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DC Field	Value	Language
dc.contributor.author	Leppla, Denis	-
dc.contributor.author	Zannoni, Nora	-
dc.contributor.author	Kremper, Leslie	-
dc.contributor.author	Williams, Jonathan	-
dc.contributor.author	Pöhlker, Christoph	-
dc.contributor.author	Sá, Marta	-
dc.contributor.author	Solci, Maria Christina	-
dc.contributor.author	Hoffmann, Thorsten	-
dc.date.accessioned	2023-04-19T11:54:52Z	-
dc.date.available	2023-04-19T11:54:52Z	-
dc.date.issued	2023	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/8949	-
dc.description.abstract	Chiral chemodiversity plays a crucial role in biochemical processes such as insect and plant communication. However, the vast majority of organic aerosol studies do not distinguish between enantiomeric compounds in the particle phase. Here we report chirally specified measurements of secondary organic aerosol (SOA) at the Amazon Tall Tower Observatory (ATTO) at different altitudes during three measurement campaigns at different seasons. Analysis of filter samples by liquid chromatography coupled to mass spectrometry (LC-MS) has shown that the chiral ratio of pinic acid (C9H14O4) varies with increasing height above the canopy. A similar trend was recently observed for the gas-phase precursor α-pinene but more pronounced. Nevertheless, the measurements indicate that neither the oxidation of (+/−)-α-pinene nor the incorporation of the products into the particulate phase proceeds with stereo preference and that the chiral information of the precursor molecule is merely transferred to the low-volatility product. The observation of the weaker height gradient of the present enantiomers in the particle phase at the observation site can be explained by the significant differences in the atmospheric lifetimes of reactant and product. Therefore, it is suggested that the chiral ratio of pinic acid is mainly determined by large-scale emission processes of the two precursors, while meteorological, chemical, or physicochemical processes do not play a particular role. Characteristic emissions of the chiral aerosol precursors from different forest ecosystems, in some cases even with contributions from forest-related fauna, could thus provide large-scale information on the different contributions to biogenic secondary aerosols via the analytics of the chiral particle-bound degradation products.	en_GB
dc.language.iso	eng	de
dc.rights	CC BY	*
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/	*
dc.subject.ddc	540 Chemie	de_DE
dc.subject.ddc	540 Chemistry and allied sciences	en_GB
dc.title	Varying chiral ratio of pinic acid enantiomers above the Amazon rainforest	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-8933	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Published version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 09 Chemie, Pharmazie u. Geowissensch.	de
jgu.organisation.number	7950	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Atmospheric Chemistry and Physics	de
jgu.journal.volume	23	de
jgu.journal.issue	2	de
jgu.pages.start	809	de
jgu.pages.end	820	de
jgu.publisher.year	2023	-
jgu.publisher.name	Copernicus GmbH EGU	de
jgu.publisher.place	Katlenburg-Lindau	de
jgu.publisher.issn	1680-7324	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	540	de
jgu.publisher.doi	10.5194/acp-23-809-2023	de
jgu.organisation.ror	https://ror.org/023b0x485	-
jgu.subject.dfg	Naturwissenschaften	de
Appears in collections:	DFG-491381577-G

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