Total organic carbon and stable carbon isotopes of dust samples from ephemeral rivers in Namibia analyzed after the sorption experiment

DOI

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‰.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.972505
Related Identifier IsPartOf https://doi.pangaea.de/10.1594/PANGAEA.972507
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.972505
Provenance
Creator van Kaam, Rianne ORCID logo
Publisher PANGAEA
Publication Year 2024
Funding Reference German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID 390741603 https://gepris.dfg.de/gepris/projekt/390741603 EXC 2077: The Ocean Floor – Earth's Uncharted Interface
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 90 data points
Discipline Earth System Research
Spatial Coverage (14.508W, -23.563S, 15.039E, -21.899N); Kuiseb, Gobabeb, Namibia; Kuiseb, Rooibank, Namibia; Omaruru, Namibia
Temporal Coverage Begin 2023-04-22T00:00:00Z
Temporal Coverage End 2023-04-23T00:00:00Z