PANGAEA_987318 Size-fractionated particulate total mercury and monomethylmercury concentrations in the Southern Ocean during the PS133/1 expedition (22 October – 9 November 2022) Pérez-Rodríguez, Marta; Biester, Harald Size-fractionated particulate total mercury and monomethylmercury concentrations in the Southern Ocean during the PS133/1 expedition (22 October – 9 November 2022) 2026-01-07 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.987318 Investigator Marta Pérez-Rodríguez m.perez-rodriguez@tu-braunschweig.de Earth Science Event label DATE/TIME LATITUDE LONGITUDE DEPTH, water Mercury, particulate Monomethylmercury, particulate Mercury, particulate Monomethylmercury, particulate geoscientificInformation In situ pump in-situ pumps Mercury Methylmercury particle PS133/1 PS133/1_15-2 PS133/1_16-2 PS133/1_17-4 PS133/1_6-15 PS133/1_9-17 South Sandwich Islands Thermal decomposition amalgamation - atomic absorption spectrometer (TDA AAS), Milestone, DMA EVO Gas chromatograph - cold vapor atomic fluorescence spectrometery (GC-CVAFS), Brooks Rand, Methylmercury Manual System Polarstern 2022-10-22 2022-11-09 Complete -56.26666 -51.28914 -39.99797 -24.84127 25.0 m (DEPTH, water) 350.0 m (DEPTH, water) GEOTRACES Global marine biogeochemical cycles of trace elements and their isotopes unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 186 data points text/tab-separated-values Biester, Harald Uwe; Pérez-Rodríguez, Marta; Calean, Adelina; Sindlev, Marco B; Pakhomov, Evgeny A; Lüskow, Florian; Stimac, Ingrid; Trimborn, Scarlett; Dufour, Aurélie; Torres-Rodriguez, Natalia; Heimbürger-Boavida, Lars-Eric; Wenzhöfer, Frank; Glud, Ronnie N (2026): Dissolved and Particulate Methylated Mercury in a Highly Productive Area of the Southern Ocean. Global Biogeochemical Cycles, 40(1), e2025GB008767, https://doi.org/10.1029/2025GB008767 Bishop, James K B; Lam, Phoebe J; Wood, Todd J (2012): Getting good particles: Accurate sampling of particles by large volume in-situ filtration. Limnology and Oceanography-Methods, 10(9), 681-710, https://doi.org/10.4319/lom.2012.10.681

Concentrations of particulate total mercury (Hg) and monomethylmercury (MMHg) were determined in size-fractionated suspended particles collected in the Southern Ocean between 22 October and 9 November 2022 during the PS133/1 expedition. Particles were collected using battery-powered in situ large-volume pumps (McLane Research Laboratories, Inc. and Challenger Oceanic's Stand-Alone Pumping System, SAPS) equipped with 142 mm diameter filter holders (MULVFS style; Bishop et al., 2012). Pumps were deployed at depths ranging from 25 to 350 m. Each filter holder contained two filters for size fractionation: a 51 μm Sefar Petex screen (SEFAR GmbH)—acid-leached prior to the cruise—mounted above a pre-combusted QMA filter (nominal pore size ~2.2 μm), separating particle size classes of 2.2–51 μm and >51 μm. Particulate total mercury was quantified by thermal decomposition, amalgamation, and atomic absorption spectrophotometry (TDA–AAS) using a DMA-EVO Direct Mercury Analyzer (Milestone). MMHg concentrations were determined by gas chromatography–cold vapor atomic fluorescence spectrometry (GC–CVAFS) using a Brooks Rand methylmercury analysis system following acid digestion. Data are reported both as mass-specific concentrations (ng g⁻¹ of suspended particulate matter) and as volume-normalized concentrations (pmol L⁻¹), corrected for the volume of water filtered. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.987318"!

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.1029/2025GB008767 Dissolved and Particulate Methylated Mercury in a Highly Productive Area of the Southern Ocean https://doi.org/10.17815/jlsrf-3-163 Polarstern https://doi.org/10.4319/lom.2012.10.681 Getting good particles: Accurate sampling of particles by large volume in-situ filtration https://www.geotraces.org/ GEOTRACES DIF 9.4 2026-01-07 2026-04-29