van Kaam, Rianne J M (2025): Results of sorption experiments on dust samples from ephemeral rivers in Namibia - Time series-5 mg dust [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.972484, In: van Kaam, RJM (2025): Sorption experiments with dissolved organic carbon and characterized dust samples from ephemeral rivers in Namibia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.972507
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Published: 2025-07-24 • DOI registered: 2025-08-22
Keyword(s):
Related to:
van Kaam, Rianne J M; Kölling, Martin; Elvert, Marcus; Hinrichs, Kai-Uwe; Zabel, Matthias (2025): Dust deposition directly affects the concentration of dissolved organic carbon in the ocean. Marine Chemistry, 271, 104531, https://doi.org/10.1016/j.marchem.2025.104531
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 390741603: EXC 2077: The Ocean Floor – Earth's Uncharted Interface
Coverage:
Median Latitude: -22.876067 * Median Longitude: 14.727100 * South-bound Latitude: -23.562900 * West-bound Longitude: 14.508400 * North-bound Latitude: -21.899000 * East-bound Longitude: 15.039400
Date/Time Start: 2023-04-22T00:00:00 * Date/Time End: 2023-04-23T00:00:00
Event(s):
1-Kuiseb * Latitude: -23.562900 * Longitude: 15.039400 * Date/Time: 2023-04-22T00:00:00 * Location: Kuiseb, Gobabeb, Namibia * Method/Device: Dust sample (DUST)
Comment:
Different amounts of dust (5 mg and 100 mg) were added to a mixture (30 mL) of artificial seawater and 13C-labeled Spirulina extract (~500 µM). Water samples were taken at multiple time points (0, 10, 24, 48, 72, 120, and 168 hours) and analyzed for DOC using a carbon analyzer (multiN/C 2100s, Analytik Jena). Dust samples were analyzed for TOC and δ13C-TOC before and after the experiments using isotope ratio mass spectrometry (IRMS) (Delta V Plus, Thermo Scientific, with a ConFlo IV interface to an elemental analyzer), calibrated against the Vienna Pee Dee Belemnite (VPDB) standard with a precision of ±0.35‰. After 72 hours, water samples were also analyzed for δ13C-DIC using isotope ratio infrared spectrometry (IRIS) with a universal reference interface (URI) (Delta Ray, Thermo Scientific), calibrated to the VPDB standard with a precision of ±0.05‰.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | van Kaam, Rianne J M | |||
| 2 | Type of study | Study type | van Kaam, Rianne J M | |||
| 3 | Sample code/label | Sample label | van Kaam, Rianne J M | |||
| 4 | Dust, added | Dust add | mg | van Kaam, Rianne J M | ||
| 5 | Time in hours | Time h | h | van Kaam, Rianne J M | ||
| 6 | Carbon, organic, dissolved | DOC | µmol/l | van Kaam, Rianne J M | Multi N/C 2100S analyzer (Analytik Jena) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
285 data points