A dissolved organic carbon (DOC) analyzer capable of detecting sub-μM DOC differences in natural fresh waters: A proof of concept study

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dc.contributor.authorJennings, Meredith
dc.contributor.authorAbdulla, Hussain
dc.contributor.authorStubbins, Aron
dc.contributor.authorSun, Luni
dc.contributor.authorWang, Rui
dc.contributor.authorMopper, Kenneth
dc.creator.orcidhttp://orcid.org/0000-0003-1382-3834en_US
dc.creator.orcidhttp://orcid.org/0000-0003-2632-9421en_US
dc.creator.orcidhttp://orcid.org/0000-0001-8089-6019en_US
dc.creator.orcidhttps://orcid.org/0000-0003-1382-3834
dc.creator.orcidhttps://orcid.org/0000-0003-2632-9421
dc.creator.orcidhttps://orcid.org/0000-0001-8089-6019
dc.creator.orcidhttps://orcid.org/0000-0003-1382-3834
dc.creator.orcidhttps://orcid.org/0000-0003-2632-9421
dc.creator.orcidhttps://orcid.org/0000-0001-8089-6019http://orcid.org/0000-0003-1382-3834
dc.creator.orcidhttp://orcid.org/0000-0003-2632-9421
dc.creator.orcidhttp://orcid.org/0000-0001-8089-6019
dc.date.accessioned2022-03-21T20:42:32Z
dc.date.available2022-03-21T20:42:32Z
dc.date.issued2018-05-11
dc.description.abstracthis study reports the development of a new type of organic carbon (OC) analyzer that combines flow through analysis and ultraviolet-wet chemical oxidation (UV-WCO). Total or dissolved OC (TOC or DOC, respectively) is determined through detection of CO2 as the oxidation product using a vibration insensitive nondispersive infrared (NDIR) gas analyzer. Aided by heat and UV, OC is oxidized by continuously pumping the liquid sample in-line with a carbon-free acidic persulfate reagent at a constant flow rate through the system. The CO2 produced from oxidation of OC is sparged from solution at a precise flow rate and is continuously detected, producing a stable signal plateau with high signal-to-noise ratio. A low carbon blank/baseline for the analysis is achieved by recycling persulfate reagent alone through the system until minimal CO2 is detected. We show progress in the optimization of this novel instrument that, unlike standard high temperature combustion (HTC) instrumentation that is subject to high blank variability and micromolar resolution (typical coefficient of variation (CV) ∼ 1–2%), has potential applications for studies of DOC net production and consumption by various mechanisms that typically require sub-micromolar precision.en_US
dc.identifier.citationJennings, M., Abdulla, H., Stubbins, A., Sun, L., Wang, R. and Mopper, K., 2018. A dissolved organic carbon (DOC) analyzer capable of detecting sub‐μM DOC differences in natural fresh waters: A proof of concept study. Limnology and Oceanography: Methods, 16(5), pp.309-321.en_US
dc.identifier.doihttps://doi.org/10.1002/lom3.10249
dc.identifier.urihttps://hdl.handle.net/1969.6/90291
dc.language.isoen_USen_US
dc.publisherASLOen_US
dc.subjectnatural fresh watersen_US
dc.subjectconcept studyen_US
dc.titleA dissolved organic carbon (DOC) analyzer capable of detecting sub-μM DOC differences in natural fresh waters: A proof of concept studyen_US
dc.typeArticleen_US

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