Contribution of formulae and elemental ratios of solid phase extracted dissolved organic matter (SPE-DOM) from POLARSTERN cruise ARK-XXVII/3 (IceArc) in 2012


Molecular formulae were additionally associated with different molecular categories because less than 6% of the DOM has been identified on a molecular level.Molecular categories are defined as follow: 1) dissolved black carbon (BC), with an AImod >= 0.67 (Koch and Dittmar, 2006; doi:10.1002/rcm.2386) was separated in 3 different subgroups, either <15 (BC-<15C), or =15C) C atoms both without heteroatoms, or containing heteroelements (BC-CHOx); 2) polyphenols (poly), with an AImod >0.5 but <0.67; 3) highly unsaturated formulae, with an AImod <0.5, H/C <1.5; 4) formulae of unsaturated aliphatics, with an 1.5< H/C <2, O/C 2, O/C 0.9 and with either no (sugars) or with heteroatoms (sugars-CHOx) and 7) peptide molecular formulae, with 1.5 < H/C <2, O/C 0. Additionally, poly, highly unsaturated and unsaturated aliphatics were further separated in oxygen rich (O-rich) and oxygen poor (O-poor) if the element ratio O/C was > 0.5 or < 0.5 respectively.

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Creator Rossel, Pamela E ORCID logo; Bienhold, Christina ORCID logo; Boetius, Antje ORCID logo; Dittmar, Thorsten ORCID logo
Publisher PANGAEA
Publication Year 2015
Funding Reference Seventh Framework Programme Crossref Funder ID 294757 Assessment of bacterial life and matter cycling in deep-sea surface sediments
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 1084 data points
Discipline Earth System Research
Spatial Coverage (17.805W, 82.891S, 129.913E, 88.820N); Arctic Ocean
Temporal Coverage Begin 2012-08-15T10:38:00Z
Temporal Coverage End 2012-09-29T13:21:00Z