Pore water geochemistry of arctic deep sea sediments measured at station MSM16/2_809-1 (Sample 16,Reference) ...

• Main Authors: Felden, Janine, Boetius, Antje
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: DEPTH, sediment/rock; Sulfide; Sulfate; Carbon, inorganic, dissolved; Alkalinity, total; Silicate; Phosphate; Ammonium; Nitrate; Nitrite; MultiCorer; Photometer, methylene blue Cline, 1969; Ion chromatography; Flow injection analysis Hall and Aller 1992; Two-point titration Edmond 1970; Seawater analysis after Grasshoff et al., 1983 Verlag Chemie GmbH Weinheim; MSM16/2; Maria S. Merian; European Seafloor Observatory Network ESONET; Hotspot Ecosystem Research and Mans Impact On European Seas HERMIONE; Arctic
• Online Access: https://dx.doi.org/10.1594/pangaea.810910; https://doi.pangaea.de/10.1594/PANGAEA.810910

Pore water and turnover rates were determined for surface sediment cores obtained in 2009 and 2010. The pore water was extracted with Rhizons (Rhizon CSS: length 5 cm, pore diameter 0.15 µm; Rhizosphere Research Products, Wageningen, Netherlands) in 1 cm-resolution and immediately fixed in 5% zinc acetate (ZnAc) solution for sulfate, and sulfide analyses. The samples were diluted, filtered and the concentrations measured with non-suppressed anion exchange chromatography (Waters IC-Pak anion exchange column, waters 430 conductivity detector). The total sulfide concentrations (H2S + HS- + S**2-) were determined using the diamine complexation method (doi:10.4319/lo.1969.14.3.0454). Samples for dissolved inorganic carbon (DIC) and alkalinity measurements were preserved by adding 2 µl saturated mercury chloride (HgCl2) solution and stored headspace-free in gas-tight glass vials. DIC and alkalinity were measured using the flow injection method (detector VWR scientific model 1054) (doi:10.4319/lo.1992.37.5.1113). ...