Valk, Ole; Rutgers van der Loeff, Michiel M; Geibert, Walter (2018): Thorium isotopes in the water column at station PS70/260 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.893862, In supplement to: Valk, Ole; Rutgers van der Loeff, Michiel M; Geibert, Walter; Gdaniec, Sandra; Rijkenberg, Micha J A; Moran, S Bradley; Lepore, Kate; Edwards, Ross L; Lu, Y; Puigcorbé, Viena (2018): Importance of hydrothermal vents in scavenging removal of 230Th in the Nansen Basin. Geophysical Research Letters, 45, https://doi.org/10.1029/2018GL079829
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Further details:
Shen, Chuan-Chou; Cheng, Hai; Edwards, R Lawrence; Moran, S Bradley; Edmonds, H N; Hoff, J A; Thomas, Rebecca B (2003): Measurement of Attogram Quantities of 231Pa in Dissolved and Particulate Fractions of Seawater by Isotope Dilution Thermal Ionization Mass Spectroscopy. Analytical Chemistry, 75(5), 1075-1079, https://doi.org/10.1021/ac026247r
Project(s):
Marine Geochemistry @ AWI (AWI_MarGeoChem)
Coverage:
Latitude: 84.489700 * Longitude: 36.138100
Date/Time Start: 2007-08-07T09:51:00 * Date/Time End: 2007-08-07T09:51:00
Minimum DEPTH, water: 50 m * Maximum DEPTH, water: 4000 m
Event(s):
PS70/260-2 * Latitude: 84.489700 * Longitude: 36.138100 * Date/Time: 2007-08-07T09:51:00 * Elevation: -4056.0 m * Location: Arctic Ocean * Campaign: ARK-XXII/2 (PS70 SPACE DAMOCLES) * Basis: Polarstern * Method/Device: CTD/Rosette, ultra clean (CTD-UC)
Comment:
Dissolved samples were filtered directly from the 24 L CTD-Niskin® bottles into cubitainers (LDPE) using 0.45 µm pore size Acropaks®. Samples were collected in volumes of 1 L, 2 L, and 10 L and acidified with concentrated ultraclean HNO3. Seawater for the analysis of total 230Th was sampled without filtration. The analyses were done at the University of Minnesota, Minneapolis, following methods described by Shen et al., 2003. The concentrations were measured using Inductively Coupled Plasma Mass Spectrometry (ICP-MS, Thermo Finnigan, Neptune) equipped with an secondary electron multiplier (SEM) and a Retarding Potential Quadrupole (RPQ) energy filter.
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Version comment:
2019-12-17: Add Thorium 232, dissolved
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, water | Depth water | m | Valk, Ole | Geocode | |
| 2 | Thorium-230, dissolved | 230Th diss | fg/kg | Valk, Ole | ICP-MS, Thermo Scientific Neptune | |
| 3 | Thorium-230, dissolved, standard deviation | 230Th diss std dev | ± | Valk, Ole | ICP-MS, Thermo Scientific Neptune | |
| 4 | Thorium-232, dissolved | 232Th diss | pmol/kg | Valk, Ole | ICP-MS, Thermo Scientific Neptune | |
| 5 | Thorium-232, dissolved, standard deviation | 232Th diss std dev | ± | Valk, Ole | ICP-MS, Thermo Scientific Neptune | |
| 6 | Thorium-230 | 230Th | fg/kg | Valk, Ole | ICP-MS, Thermo Scientific Neptune | Total |
| 7 | Thorium-230, standard deviation | 230Th std dev | ± | Valk, Ole | ICP-MS, Thermo Scientific Neptune | Total |
Change history:
2020-01-28T14:44:31 – Add Thorium 232, dissolved
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
36 data points