Henkel, Susann; Kasten, Sabine; Hartmann, Jan; Silva Busso, A; Staubwasser, Michael (2018): Pore water geochemistry of sediment core Potter_Cove_STA04 [dataset]. Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, PANGAEA, https://doi.org/10.1594/PANGAEA.890308, In supplement to: Henkel, S et al. (2018): Iron cycling and stable Fe isotope fractionation in Antarctic shelf sediments, King George Island. Geochimica et Cosmochimica Acta, https://doi.org/10.1016/j.gca.2018.06.042
Always quote citation above when using data! You can download the citation in several formats below.
Further details:
Lohan, Maeve C; Aguilar-Islas, Ana M; Franks, Robert P; Bruland, Kenneth W (2005): Determination of iron and copper in seawater at pH 1.7 with a new commercially available chelating resin, NTA Superflow. Analytica Chimica Acta, 530(1), 121-129, https://doi.org/10.1016/j.aca.2004.09.005
Schoenberg, Ronny; von Blanckenburg, Friedhelm (2005): An assessment of the accuracy of stable Fe isotope ratio measurements on samples with organic and inorganic matrices by high-resolution multicollector ICP-MS. International Journal of Mass Spectrometry, 242(2-3), 257-272, https://doi.org/10.1016/j.ijms.2004.11.025
Seeberg-Elverfeldt, Jens; Schlüter, Michael; Feseker, Tomas; Kölling, Martin (2005): Rhizon sampling of pore waters near the sediment/water interface of aquatic systems. Limnology and Oceanography: Methods, 3, 361-371, https://doi.org/10.4319/lom.2005.3.361
Stookey, Lawrence L (1970): Ferrozine - A new spectrophotometric reagent for iron. Analytical Chemistry, 42, 779-781, https://doi.org/10.1021/ac60289a016
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Coverage:
Latitude: -62.231000 * Longitude: -58.649190
Date/Time Start: 2012-01-30T00:00:00 * Date/Time End: 2012-01-30T00:00:00
Minimum DEPTH, sediment/rock: -0.01 m * Maximum DEPTH, sediment/rock: 0.20 m
Event(s):
Comment:
Methods:
Sampling:
• Rhizon technique (Seeberg-Elverfeldt et al. 2005)
SO42-:
• Ion chromatography (Metrohm IC Net 2.3)
Fe2+:
• Ferrozine method (Stookey 1970)
NH4+:
• conductometrically
Alkalinity:
• Titration with HCl
δ56Fe(pw):
• Removal of salt matrix by column chromatography (NTA Superflow columns, Qiagen) (Lohan et al. 2005)
• Column separation using the Dowex 1X8 resin
• Isotope analysis on a ThermoFinnigan Neptune Multicollector-ICP-MS (ESI Apex-Q desolvator, standard-sample bracketing method with IRMM-014) (Schoenberg and von Blanckenburg 2005)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Core | Core | Henkel, Susann | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Henkel, Susann | Geocode | |
| 3 | Sulfate | [SO4]2- | mmol/l | Henkel, Susann | Ion chromatography (Metrohm IC Net 2.3) | |
| 4 | Iron 2+ | Fe2+ | µmol/l | Henkel, Susann | Iron, colorimetric, Ferrozine (Stookey, 1970) | |
| 5 | Alkalinity, total | AT | mmol(eq)/l | Henkel, Susann | Titration with HCl | |
| 6 | Ammonium | [NH4]+ | µmol/l | Henkel, Susann | Conductometry | |
| 7 | Comment | Comment | Henkel, Susann | |||
| 8 | δ56/54Fe | δ56/54Fe | ‰ | Henkel, Susann | MC-ICP-MS Thermo-Finnigan Neptune | δ56Fe(pore water) [‰], relative to IRMM-014 |
| 9 | δ56/54Fe, standard deviation | δ56/54Fe std dev | ± | Henkel, Susann | MC-ICP-MS Thermo-Finnigan Neptune | δ56Fe(pore water) [‰], relative to IRMM-014 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
103 data points
Data
| 1 Core | 2 Depth sed [m] | 3 [SO4]2- [mmol/l] | 4 Fe2+ [µmol/l] | 5 AT [mmol(eq)/l] | 6 [NH4]+ [µmol/l] | 7 Comment | 8 δ56/54Fe [‰] | 9 δ56/54Fe std dev [±] |
|---|---|---|---|---|---|---|---|---|
| A | -0.01 | 22.89 | 0.9 | 2.01 | 173.2 | bottom water | ||
| A | 0.01 | 26.25 | 4.6 | 3.04 | 62.2 | |||
| A | 0.02 | 26.18 | 57.6 | 3.58 | 69.6 | |||
| A | 0.03 | 106.1 | 3.93 | 111.5 | ||||
| A | 0.04 | 25.11 | 111.6 | 146.1 | ||||
| A | 0.05 | 24.85 | 78.2 | 5.14 | 197.9 | |||
| A | 0.06 | 24.38 | 32.4 | 5.93 | 249.7 | |||
| A | 0.07 | 24.00 | 27.2 | 286.7 | ||||
| A | 0.08 | 21.6 | 6.80 | 326.2 | ||||
| A | 0.09 | 22.64 | 12.9 | 8.69 | 397.8 | |||
| A | 0.10 | 22.20 | 9.4 | 10.03 | 460.5 | |||
| A | 0.11 | 22.03 | 10.3 | 473.1 | ||||
| A | 0.13 | 20.79 | 7.6 | 13.80 | 580.3 | |||
| A | 0.15 | 20.04 | 4.8 | 14.76 | 649.7 | |||
| A | 0.17 | 18.81 | 4.4 | 18.84 | 731.6 | |||
| A | 0.20 | 16.32 | 2.3 | 20.48 | 971.2 | |||
| B | 0.02 | -2.36 | 0.11 | |||||
| B | 0.03 | -1.84 | 0.08 | |||||
| B | 0.04 | -1.59 | 0.09 | |||||
| B | 0.05 | -1.35 | 0.09 | |||||
| B | 0.06 | -1.54 | 0.09 | |||||
| B | 0.07 | -1.35 | 0.08 | |||||
| B | 0.08 | -1.40 | 0.08 | |||||
| B | 0.09 | -0.83 | 0.08 | |||||
| B | 0.10 | -1.40 | 0.10 |