Results of sorption experiments on dust samples from ephemeral rivers in Namibia - Time series-100 mg dust

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.972497
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.972497
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 285 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