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dc.contributor.authorKari, Eetu
dc.contributor.authorMiettinen, Pasi
dc.contributor.authorYli-Pirilä, Pasi
dc.contributor.authorVirtanen, Annele
dc.contributor.authorFaiola, Celia L
dc.date.accessioned2018-05-21T10:47:22Z
dc.date.available2018-05-21T10:47:22Z
dc.date.issued2018
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/6635
dc.description.abstractQuantitative proton-transfer-reaction mass spectrometer (PTR-MS) measurements of ambient volatile organic compounds (VOCs) require proper calibration procedures. In particular, compound product ion distribution and humidity-dependent responses must be characterized. In this study, we generated twelve gas-phase terpenoid standards using a dynamic dilution system to calibrate the PTR-MS with time-of-flight mass spectrometer (PTR-ToF-MS): six monoterpenes, two monoterpene derivatives, and four sesquiterpenes. The humidity-dependent response was characterized for three terpenoid compounds to compare different molecular structures: α-pinene, δ-limonene, and longifolene. We provide the first comprehensive summary of PTR-ToF-MS product ion distributions for twelve common biogenic volatile organic compounds using two different reduced electric field (E/N) values, 80 Td and 130 Td. Results demonstrated that neglecting to correct for individual product ion distributions of different terpenoid isomers can result in an error of up to 26% for reported mixing ratios. δ-Limonene and longifolene exhibited a small humidity-dependent response in the PTR-ToF-MS, but this did not contribute significantly to the overall measurement error. These results will improve quantification of commonly-measured biogenic volatile organic compound emissions and chemistry in the atmosphere.
dc.language.isoenglanti
dc.publisherElsevier BV
dc.relation.ispartofseriesInternational Journal of Mass Spectrometry
dc.relation.urihttp://dx.doi.org/10.1016/j.ijms.2018.05.003
dc.rightsCC BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectPTR-ToF-MS
dc.subjectProduct ion distribution
dc.subjectMonoterpene
dc.subjectSesquiterpene
dc.subjectHumidity-dependence
dc.subjectBVOC
dc.titlePTR-ToF-MS product ion distributions and humidity-dependence of biogenic volatile organic compounds
dc.description.versionpublished version
dc.contributor.departmentDepartment of Applied Physics, activities
dc.contributor.departmentYmpäristö- ja biotieteiden laitos / Toiminta
uef.solecris.id54541971en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© Authors
dc.relation.doi10.1016/j.ijms.2018.05.003
dc.description.reviewstatuspeerReviewed
dc.format.pagerange87-97
dc.relation.issn1387-3806
dc.relation.volume430
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessHybridijulkaisukanavassa ilmestynyt avoin julkaisu


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