Abstract
We have developed sampling methods and an analytical system to determine the concentration of dissolved organic C (DOC) in marine pore waters. Our analytical approach is a modification of recently developed high‐temperature, Pt‐catalyzed oxidation methods; it uses chromatographic trapping of the DOC‐derived CO2, followed by reduction to CH4 and flame ionization detection. Sampling experiments with nearshore sediments indicate that pore‐water separation by whole‐core squeezing causes artificially elevated DOC concentrations, while pore‐water recovery by sectioning and centrifugation does not appear to introduce DOC artifacts. Results from a set of northwestern Atlantic continental slope cores suggest that net DOC production accounts for > 50% of the organic C that is recycled at the sediment‐water interface.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
