Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5161339 | Organic Geochemistry | 2017 | 15 Pages |
Abstract
We have analyzed the dissolved organic carbon, OC, in ocean basement fluids using Fourier Transform-Ion Cyclotron Resonance-Mass Spectrometry (FT-ICR-MS). The compounds identified at the two sites, near the Juan de Fuca and Mid-Atlantic Ridges (North Pond), differ substantially from each other and from seawater. Compared to Juan de Fuca, North Pond organics had a lower average molecular weight (349 vs. 372Â g/mol), 50% more identifiable compounds (2181 vs. 1482), and demonstrably lower average nominal oxidation state of carbon (â0.70 vs. â0.56). The North Pond fluids were also found to have many more N- and S-bearing compounds. Based on our data, the marine subsurface can alter the types of dissolved OC, DOC, compounds in seawater.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Douglas E. LaRowe, Boris P. Koch, Alberto Robador, Matthias Witt, Kerstin Ksionzek, Jan P. Amend,