Total mercury, monomethylmercury, and total carbon in sediments from the Southern Ocean and South Sandwich Trench during the PS133/1 expedition (3 – 9 November 2022)

DOI

Sediment cores for total mercury (Hg), monomethylmercury (MMHg), and total carbon (TC) were collected in the Southern Ocean and the South Sandwich Trench between 3 and 9 November 2022 during the PS133/1 expedition. Sampling depths ranged from approximately 3700 to 8000 m, using a multicorer (MUC) system. Total Hg concentrations were determined by thermal decomposition, amalgamation, and atomic absorption spectrophotometry (TDA–AAS) using a DMA-80 Direct Mercury Analyzer (Milestone). Monomethylmercury (MMHg) was analyzed by gas chromatography–cold vapor atomic fluorescence spectrometry (GC–CVAFS) following ethylation with sodium tetraethylborate on a KOH-digested aliquot, using a Brooks Rand manual system. Total carbon (TC) was measured using an elemental analyzer Euro EA 3000 (HEKAtech GmbH).

Identifier
DOI https://doi.org/10.1594/PANGAEA.987321
Related Identifier References https://doi.org/10.22541/essoar.175242157.79186301/v1
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.987321
Provenance
Creator Pérez-Rodríguez, Marta ORCID logo; Biester, Harald; Wenzhöfer, Frank; Glud, Ronnie N (ORCID: 0000-0002-7069-893X)
Publisher PANGAEA
Publication Year 2026
Funding Reference Danish National Research Foundation https://doi.org/10.13039/501100001732 Crossref Funder ID DNRF145 Danish Center for Hadal Research, HADAL; German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID 528941462 https://gepris.dfg.de/gepris/projekt/528941462 Controls of Primary Production on Southern Ocean Mercury Cycling (COPPSOM); German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID GPF 20-1_053 Island Impact: Understanding the Regional Impact of South Georgia on Southern ACC Biogeochemistry and Ecosystem Function; German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID GPF 20-2_024 South Polar Carbon: Benthic Carbon Mineralization and Preservation in Southern Ocean Bathyal, Abyssal and Hadal Sediments
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 339 data points
Discipline Earth System Research
Spatial Coverage (-39.925W, -56.241S, -24.839E, -51.301N)
Temporal Coverage Begin 2022-11-03T17:46:18Z
Temporal Coverage End 2022-11-09T04:52:09Z