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    Molecular signature of organic nitrogen in septic-impacted groundwater

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    Arnold WA 2014 EnvSci_ProcImp for WHOAS.pdf (3.190Mb)
    Date
    2014-08
    Author
    Arnold, William A.  Concept link
    Longnecker, Krista  Concept link
    Kroeger, Kevin D.  Concept link
    Kujawinski, Elizabeth B.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/6964
    As published
    https://doi.org/10.1039/C4EM00289J
    Abstract
    Dissolved 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.
    Description
    Author 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.
    Collections
    • Environmental Geoscience
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Preprint: Arnold, William A., Longnecker, Krista, Kroeger, Kevin D., Kujawinski, Elizabeth B., "Molecular signature of organic nitrogen in septic-impacted groundwater", 2014-08, https://doi.org/10.1039/C4EM00289J, https://hdl.handle.net/1912/6964
     
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