Structures and reactivity of peroxy radicals and dimeric products revealed by online tandem mass spectrometry

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dc.contributor University of Helsinki, INAR Physics en
dc.contributor University of Helsinki, Institute for Atmospheric and Earth System Research (INAR) en
dc.contributor.author Tomaz, Sophie
dc.contributor.author Wang, Dongyu
dc.contributor.author Zabalegui, Nicolas
dc.contributor.author Li, Dandan
dc.contributor.author Lamkaddam, Houssni
dc.contributor.author Bachmeier, Franziska
dc.contributor.author Vogel, Alexander
dc.contributor.author Eugenia Monge, Maria
dc.contributor.author Perrier, Sebastien
dc.contributor.author Baltensperger, Urs
dc.contributor.author George, Christian
dc.contributor.author Rissanen, Matti
dc.contributor.author Ehn, Mikael
dc.contributor.author Haddad, Imad El
dc.contributor.author Riva, Matthieu
dc.date.accessioned 2021-07-28T08:33:01Z
dc.date.available 2021-07-28T08:33:01Z
dc.date.issued 2021-01-12
dc.identifier.citation Tomaz , S , Wang , D , Zabalegui , N , Li , D , Lamkaddam , H , Bachmeier , F , Vogel , A , Eugenia Monge , M , Perrier , S , Baltensperger , U , George , C , Rissanen , M , Ehn , M , Haddad , I E & Riva , M 2021 , ' Structures and reactivity of peroxy radicals and dimeric products revealed by online tandem mass spectrometry ' , Nature Communications , vol. 12 , no. 1 , 300 . https://doi.org/10.1038/s41467-020-20532-2 en
dc.identifier.issn 2041-1723
dc.identifier.other PURE: 166968179
dc.identifier.other PURE UUID: d2a6fb86-db48-492b-ae38-659bbb4e5723
dc.identifier.other WOS: 000662810100004
dc.identifier.other Scopus: 85099202577
dc.identifier.other ORCID: /0000-0003-0463-8098/work/97707322
dc.identifier.uri http://hdl.handle.net/10138/332640
dc.description.abstract Organic peroxy radicals (RO2) play a pivotal role in the degradation of hydrocarbons. The autoxidation of atmospheric RO2 radicals produces highly oxygenated organic molecules (HOMs), including low-volatility ROOR dimers formed by bimolecular RO2 + RO2 reactions. HOMs can initiate and greatly contribute to the formation and growth of atmospheric particles. As a result, HOMs have far-reaching health and climate implications. Nevertheless, the structures and formation mechanism of RO2 radicals and HOMs remain elusive. Here, we present the in-situ characterization of RO2 and dimer structure in the gas-phase, using online tandem mass spectrometry analyses. In this study, we constrain the structures and formation pathway of several HOM-RO2 radicals and dimers produced from monoterpene ozonolysis, a prominent atmospheric oxidation process. In addition to providing insights into atmospheric HOM chemistry, this study debuts online tandem MS analyses as a unique approach for the chemical characterization of reactive compounds, e.g., organic radicals. en
dc.format.extent 9
dc.language.iso eng
dc.relation.ispartof Nature Communications
dc.rights en
dc.subject 114 Physical sciences en
dc.title Structures and reactivity of peroxy radicals and dimeric products revealed by online tandem mass spectrometry en
dc.type Article
dc.description.version Peer reviewed
dc.identifier.doi https://doi.org/10.1038/s41467-020-20532-2
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion
dc.contributor.pbl
dc.contributor.pbl

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