Marine organic carbon and radiocarbon – present and future challenges

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dc.contributor.author Druffel, Ellen R. M.
dc.contributor.author Beaupre, Steven R.
dc.contributor.author Grotheer, Hendrik
dc.contributor.author Lewis, Christian B.
dc.contributor.author McNichol, Ann P.
dc.contributor.author Mollenhauer, Gesine
dc.contributor.author Walker, Brett D.
dc.date.accessioned 2022-03-22T16:55:52Z
dc.date.available 2022-03-22T16:55:52Z
dc.date.issued 2022-01-25
dc.description © The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Druffel, E., Beaupre, S., Grotheer, H., Lewis, C., McNichol, A., Mollenhauer, G., & Walker, B. Marine organic carbon and radiocarbon – present and future challenges. Radiocarbon, (2022): 1-17, https://doi.org/10.1017/RDC.2021.105. en_US
dc.description.abstract We discuss present and developing techniques for studying radiocarbon in marine organic carbon (C). Bulk DOC (dissolved organic C) Δ14C measurements reveal information about the cycling time and sources of DOC in the ocean, yet they are time consuming and need to be streamlined. To further elucidate the cycling of DOC, various fractions have been separated from bulk DOC, through solid phase extraction of DOC, and ultrafiltration of high and low molecular weight DOC. Research using 14C of DOC and particulate organic C separated into organic fractions revealed that the acid insoluble fraction is similar in 14C signature to that of the lipid fraction. Plans for utilizing this methodology are described. Studies using compound specific radiocarbon analyses to study the origin of biomarkers in the marine environment are reviewed and plans for the future are outlined. Development of ramped pyrolysis oxidation methods are discussed and scientific questions addressed. A modified elemental analysis (EA) combustion reactor is described that allows high particulate organic C sample throughput by direct coupling with the MIniCArbonDAtingSystem. en_US
dc.identifier.citation Druffel, E., Beaupre, S., Grotheer, H., Lewis, C., McNichol, A., Mollenhauer, G., & Walker, B. (2022). Marine organic carbon and radiocarbon – present and future challenges. Radiocarbon, 1-17. en_US
dc.identifier.doi 10.1017/RDC.2021.105
dc.identifier.uri https://hdl.handle.net/1912/28229
dc.publisher Cambridge University Press en_US
dc.relation.uri https://doi.org/10.1017/RDC.2021.105
dc.rights Attribution 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ *
dc.subject CSRA en_US
dc.subject Dissolved organic carbon en_US
dc.subject Methodology en_US
dc.subject Organic carbon en_US
dc.subject Radiocarbon en_US
dc.title Marine organic carbon and radiocarbon – present and future challenges en_US
dc.type Article en_US
dspace.entity.type Publication
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