DIC concentration and isotopic composition in sedimentay 13C-labeling incubation of sediment core HE483/25-2


DIC measurement: an aliquot of the slurry was filtered with a 0.2-µm filter to remove cells and other particles. After filtration, 1 mL of samples were acidified with 100 μL 45% phosphoric acid overnight in an Exetainer® vial pre-purged with CO2-free air before analysis. All samples were measured with a Delta Ray Isotope Ratio Infrared Spectrometer (IRIS) with URI Connect and autosampler (Thermo Fisher Scientific, Germany) with an analytical error of ±1‰. All isotopic values are reported in the delta notation as δ13C relative to the Vienna PeeDee Belemnite (VPDB) standard. Deviations of triplicate isotopic measurement of sample DIC were between ± 1‰ and ± 1,000‰ (for DIC with label uptake of >10,000‰). DIC concentration was calculated from the released amount of CO2 by calibration with sodium hydrogen carbonate solution.

DOI https://doi.org/10.1594/PANGAEA.962952
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.962952
Creator Zhu, Qing-Zeng (ORCID: 0000-0003-0434-441X); Yin, Xiuran ORCID logo; Taubner, Heidi; Wendt, Jenny; Friedrich, Michael W ORCID logo; Elvert, Marcus ORCID logo; Hinrichs, Kai-Uwe ORCID logo; Middelburg, Jack J 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; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 560 data points
Discipline Earth System Research
Spatial Coverage (7.966 LON, 54.050 LAT); North Sea