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dc.contributor.authorArnold, William A.  Concept link
dc.contributor.authorLongnecker, Krista  Concept link
dc.contributor.authorKroeger, Kevin D.  Concept link
dc.contributor.authorKujawinski, Elizabeth B.  Concept link
dc.date.accessioned2014-11-25T18:19:46Z
dc.date.available2015-02-01T10:06:00Z
dc.date.issued2014-08
dc.identifier.urihttps://hdl.handle.net/1912/6964
dc.descriptionAuthor Posting. © The Author(s), 2014. This is the author's version of the work. It is posted here by permission of Royal Society of Chemistry for personal use, not for redistribution. The definitive version was published in Environmental Science: Processes & Impacts 16 (2014):2400-2407, doi:10.1039/C4EM00289J.en_US
dc.description.abstractDissolved inorganic and organic nitrogen levels are elevated in aquatic systems due to anthropogenic activities. Dissolved organic nitrogen (DON) arises from various sources, and its impact could be more clearly constrained if specific sources were identified and if the molecular level composition of DON were better understood. In this work, the pharmaceutical carbamazepine was used to identify septic-impacted groundwater in a coastal watershed. Using ultrahigh resolution mass spectrometry data, the nitrogen-containing features of the dissolved organic matter in septic-impacted and non-impacted samples were compared. The septic impacted groundwater samples have a larger abundance of nitrogen-containing formulas. Impacted samples have additional DON features in the regions ascribed as ‘protein-like’ and ‘lipid-like’ in van Krevelen space and have more intense nitrogen-containing features in a specific region of a carbon versus mass plot. These features are potential indicators of dissolved organic nitrogen arising from septic effluents, and this work suggests that ultrahigh resolution mass spectrometry is a valuable tool to identify and characterize sources of DON.en_US
dc.description.sponsorshipThe Deep Ocean Exploration and Coastal Ocean Institutes at WHOI and the University of Minnesota Institute on the Environment are thanked for financial support.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.relation.urihttps://doi.org/10.1039/C4EM00289J
dc.titleMolecular signature of organic nitrogen in septic-impacted groundwateren_US
dc.typePreprinten_US
dc.description.embargo2015-02-01en_US


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