Publication Date:
2024-02-02
Description:
Molecular analysis of dissolved organic matter in overlying bottom water and porewater was performed on a Solarix FT-ICR-MS equipped with a 15 Tesla superconducting magnet (Bruker Daltonic) using an electrospray ionization source (Bruker Apollo II) in negative ion mode. Molecular formula calculation for all samples was performed using a Matlab (2010) routine that searches, with an error of 〈 0.5 ppm, for all potential combinations of elements including the elements C∞, O∞, H∞, N ≤ 4; S ≤ 2 and P ≤ 1. Combination of elements NSP, N2S, N3S, N4S, N2P, N3P, N4P, NS2, N2S2, N3S2, N4S2, S2P was not allowed. Mass peak intensities are normalized relative to the total molecular formulas in each sample according to previously published rules (Rossel et al., 2015; doi:10.1016/j.marchem.2015.07.002). Additionally, the contribution of molecular formulas with different elemental composition (carbon = C; hydrogen = H; oxygen = O; nitrogen = N; sulfur = S; phosphorus = P) is expressed as a percentage of the total intensity in each sample. Furthermore, in this table,Molecular weight~wa~ was calculated considering the intensity of the mass peak in each sample (i.e. wa stands for intensity weighted-average).
Keywords:
ABYSS; Arctic Ocean; ARK-XXVIII/2; Assessment of bacterial life and matter cycling in deep-sea surface sediments; Date/Time of event; deep sea sediment; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dissolved Organic Matter; EGI; Elevation of event; Event label; Fourier-transform ion cyclotron mass spectrometry; Fram Strait; HAUSGARTEN 2013; HG_I; HG_II; HGI; HGIV; HGIX; HGVI; KH; Latitude of event; Light frame on-sight keyspecies investigation; LOKI; Longitude of event; Maria S. Merian; Mass spectrometer Solarix FT-ICR; Molecular mass; MSM29; MSM29_424-3; MSM29_425-3; MSM29_427-2; MSM29_432-2; MSM29_439-3; MSM29_443-2; MSM29_450-2; MUC; MultiCorer; Multicorer with television; N_4; North Greenland Sea; Number of molecular formulas; Percentage of total formulae; Polarstern; porewater; PS85; PS85/436-1; PS85/441-1; PS85/445-1; PS85/454-3; PS85/454-4; PS85/454-5; PS85/460-4; PS85/463-1; PS85/464-1; PS85/465-4; PS85/468-1; PS85/469-2; PS85/470-3; PS85/473-3; S_1; S_2; S_3; Sample ID; Station label; TVMUC
Type:
Dataset
Format:
text/tab-separated-values, 957 data points
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