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dc.contributor.authorFahrni, S. M.
dc.contributor.authorRuff, M.
dc.contributor.authorWacker, L.
dc.contributor.authorPerron, N.
dc.contributor.authorGäggeler, H. W.
dc.contributor.authorSzidat, S.
dc.date.accessioned2021-02-11T21:22:26Z
dc.date.available2021-02-11T21:22:26Z
dc.date.issued2010-01-01
dc.identifier.citationFahrni, S. M., Ruff, M., Wacker, L., Perron, N., Gäggeler, H. W., & Szidat, S. (2010). A preparative 2D-chromatography method for compound-specific radiocarbon analysis of dicarboxylic acids in aerosols. Radiocarbon, 52(2), 752-760.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200045768
dc.identifier.urihttp://hdl.handle.net/10150/654119
dc.descriptionFrom the 20th International Radiocarbon Conference held in Kona, Hawaii, USA, May 31-June 3, 2009.
dc.description.abstractThere is a great scientific demand for an assessment of the sources and formation processes of atmospheric carbonaceous aerosols since they strongly influence the global radiation balance and affect public health. Much attention in atmospheric studies has been paid to dicarboxylic acids (DCAs) due to their abundance at substantially different sites and their potential influence on cloud formation processes. Nevertheless, sources of oxalic acid (HOOCCOOH) and other DCAs are not well understood yet. In order to quantify contributions of fossil and non-fossil sources, a method for the preparative separation of oxalic acid and other DCAs from aerosols for compound-specific radiocarbon analysis (CSRA) has been developed. This method consists of a water extraction of aerosols collected on quartz-fiber filters followed by 2 consecutive liquid chromatography (LC) steps on different chromatography columns (2D-chromatography). Through the use of aqueous, completely non-organic eluents and single injections into liquid chromatography, low blank levels are achieved with total oxalic acid recoveries of up to 66%. Upon separation, 14C measurements of small samples (containing typically 10-20 g carbon) are conducted at the gas ion source of the 200kV accelerator mass spectrometry facility MICADAS. The method is verified with processed reference materials, artificial mixtures of oxalic acid with typical matrix components, and a standard addition of ambient aerosols. Two exemplary field samples show dominant non-fossil sources of oxalic acid.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleA Preparative 2D-Chromatography Method for Compound-Specific Radiocarbon Analysis of Dicarboxylic Acids in Aerosols
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume52
dc.source.issue2
dc.source.beginpage752
dc.source.endpage760
refterms.dateFOA2021-02-11T21:22:26Z


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