/* DATA DESCRIPTION: Citation: Pérez-Rodríguez, Marta; Biester, Harald (2026): Dissolved total mercury and methylmercury concentrations in the Southern Ocean during the PS133/1 expedition (22 October – 9 November 2022) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.987320 Abstract: Water samples for total mercury (Hg) and methylmercury (MeHg) were collected in the Southern Ocean between 22 October and 9 November 2022 during the PS133/1 expedition, covering depths from 20 to 7000 m. Sampling was conducted using an ultraclean Titan rosette system (SBE-911Plus, Seabird) equipped with 24 × 12 L Ocean Test Equipment (OTE) bottles and a metal-free winch with a synthetic reinforced Vectran cable. After recovery, the clean CTD rosette was covered with clean plastic caps and transferred by trolley to an ISO Class 5 clean laboratory container. Each bottle was introduced through a clean airlock, rinsed externally with Milli-Q water from the container's integrated water treatment system, and subsampled following GEOTRACES ultraclean protocols. Samples for total Hg were collected unfiltered into pre-cleaned 60 mL glass vials to minimize contamination. Samples for MeHg were collected unfiltered into 250 mL HDPE Nalgene bottles and acidified to 0.4 % v/v with ultrapure trace-metal-grade HCl. Total Hg concentrations were determined using a custom single gold-trap purge and trap system following US EPA Method 1631. Dissolved MeHg concentrations were quantified by gas chromatography coupled to sector field inductively coupled plasma mass spectrometry (GC–SF–ICP–MS) with isotopic dilution calibration. Keyword(s): in-situ pumps; Mercury; Methylmercury; particle; South Sandwich Islands Supplement to: 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 References: Method 1631, Revision E: Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Absorption Fluorescence Spectrometry (2002). U.S. Environmental Protection Agency, Office of Water, 38 p. Project(s): Global marine biogeochemical cycles of trace elements and their isotopes (GEOTRACES) (URI: https://www.geotraces.org/) Funding: Danish National Research Foundation (DG) (URI: http://dg.dk/en/), grant/award no. DNRF145: Danish Center for Hadal Research, HADAL German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. 528941462: Controls of Primary Production on Southern Ocean Mercury Cycling (COPPSOM) (URI: https://gepris.dfg.de/gepris/projekt/528941462) German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. GPF 20-1_053: Island Impact: Understanding the Regional Impact of South Georgia on Southern ACC Biogeochemistry and Ecosystem Function German Research Foundation (DFG) (URI: http://www.dfg.de/en/), grant/award no. GPF 20-2_024: South Polar Carbon: Benthic Carbon Mineralization and Preservation in Southern Ocean Bathyal, Abyssal and Hadal Sediments Coverage: MEDIAN LATITUDE: -52.933683 * MEDIAN LONGITUDE: -33.612897 * SOUTH-BOUND LATITUDE: -56.289450 * WEST-BOUND LONGITUDE: -40.001890 * NORTH-BOUND LATITUDE: -51.288110 * EAST-BOUND LONGITUDE: -24.946160 DATE/TIME START: 2022-10-22T02:01:02 * DATE/TIME END: 2022-11-09T19:36:26 MINIMUM DEPTH, water: 20 m * MAXIMUM DEPTH, water: 7000 m Event(s): PS133/1_6-3 * LATITUDE START: -52.330470 * LONGITUDE START: -24.991190 * LATITUDE END: -52.330362 * LONGITUDE END: -24.995204 * DATE/TIME START: 2022-10-22T02:01:02 * DATE/TIME END: 2022-10-22T02:50:18 * ELEVATION START: -4325.9 m * ELEVATION END: -4325.9 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/7911 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette, trace metal clean (CTD-TM) * COMMENT: Deployment depth: 1000 m PS133/1_9-6 * LATITUDE START: -51.288110 * LONGITUDE START: -40.001890 * LATITUDE END: -51.288853 * LONGITUDE END: -40.000586 * DATE/TIME START: 2022-11-02T20:37:44 * DATE/TIME END: 2022-11-02T22:20:45 * ELEVATION START: -3784.9 m * ELEVATION END: -3781.2 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/7911 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette, trace metal clean (CTD-TM) * COMMENT: Deployment depth: 3726 m PS133/1_10-5 * LATITUDE START: -51.635980 * LONGITUDE START: -39.244280 * LATITUDE END: -51.635704 * LONGITUDE END: -39.244545 * DATE/TIME START: 2022-11-04T05:01:45 * DATE/TIME END: 2022-11-04T05:32:45 * ELEVATION START: -3720.1 m * ELEVATION END: -3719.6 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/7911 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette, trace metal clean (CTD-TM) * COMMENT: Deployment depth: 300 m PS133/1_13-1 * LATITUDE START: -52.213940 * LONGITUDE START: -38.368090 * LATITUDE END: -52.215432 * LONGITUDE END: -38.365150 * DATE/TIME START: 2022-11-04T17:18:45 * DATE/TIME END: 2022-11-04T18:24:06 * ELEVATION START: -3521.5 m * ELEVATION END: -3517.3 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/7911 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette, trace metal clean (CTD-TM) * COMMENT: Deployment depth: 1000 m PS133/1_14-12 * LATITUDE START: -54.195110 * LONGITUDE START: -35.907540 * LATITUDE END: -54.194171 * LONGITUDE END: -35.910249 * DATE/TIME START: 2022-11-05T23:11:36 * DATE/TIME END: 2022-11-05T23:47:50 * ELEVATION START: -243.7 m * ELEVATION END: -246.6 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/7911 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette, trace metal clean (CTD-TM) * COMMENT: Deployment depth: 227 m PS133/1_17-7 * LATITUDE START: -56.289450 * LONGITUDE START: -24.946160 * LATITUDE END: -56.329122 * LONGITUDE END: -24.923839 * DATE/TIME START: 2022-11-09T19:36:26 * DATE/TIME END: 2022-11-09T22:29:21 * ELEVATION START: -7300.9 m * ELEVATION END: -7307.4 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/7911 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: CTD/Rosette, trace metal clean (CTD-TM) * COMMENT: Deployment depth: 7000 m Parameter(s): Event label (Event) * PI: Tippenhauer, Sandra (https://orcid.org/0000-0003-3405-6275, sandra.tippenhauer@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/sandra-tippenhauer.html) DATE/TIME (Date/Time) * GEOCODE * PI: Tippenhauer, Sandra (https://orcid.org/0000-0003-3405-6275, sandra.tippenhauer@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/sandra-tippenhauer.html) LATITUDE (Latitude) * GEOCODE * PI: Tippenhauer, Sandra (https://orcid.org/0000-0003-3405-6275, sandra.tippenhauer@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/sandra-tippenhauer.html) LONGITUDE (Longitude) * GEOCODE * PI: Tippenhauer, Sandra (https://orcid.org/0000-0003-3405-6275, sandra.tippenhauer@awi.de, https://www.awi.de/en/about-us/organisation/staff/single-view/sandra-tippenhauer.html) DEPTH, water [m] (Depth water) * GEOCODE * PI: Trimborn, Scarlett (https://orcid.org/0000-0003-1434-9927, scarlett.trimborn@awi.de) Mercury [pmol/l] (Hg) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Cold vapor atomic fluorescence spectrometer (CV-AFS), Brooks Rand * COMMENT: total, unfiltered Methylmercury [pmol/l] (MeHg) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Sector field inductively coupled plasma mass spectrometer (SF-ICP-MS), Thermo Fisher Scientific, Element XR * COMMENT: total (monomethylmercury + dimethylmercury), unfiltered License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Enhanced curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 100 data points */ Event Date/Time Latitude Longitude Depth water [m] Hg [pmol/l] MeHg [pmol/l] PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 1000 0.6200 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 500 0.9600 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 300 0.4100 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 200 0.2535 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 150 0.3900 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 100 0.2300 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 80 0.1900 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 60 0.7000 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 40 0.8200 PS133/1_6-3 2022-10-22T02:01:02 -52.33047 -24.99119 20 0.4200 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 3700 0.6600 0.375 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 3500 0.6300 0.542 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 3000 0.6500 0.585 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 2000 0.7400 0.612 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 1000 0.7400 0.484 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 500 0.4700 0.493 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 300 0.6000 0.521 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 200 0.5800 0.452 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 150 0.6300 0.436 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 100 0.2300 0.168 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 80 0.3000 0.072 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 60 0.3200 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 40 0.6700 0.033 PS133/1_9-6 2022-11-02T20:37:44 -51.28811 -40.00189 20 0.3800 0.050 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 300 0.3000 0.523 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 200 0.3300 0.480 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 150 0.3600 0.219 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 100 1.1600 0.497 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 100 0.3700 0.076 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 80 0.2400 0.140 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 60 0.3000 0.075 PS133/1_10-5 2022-11-04T05:01:45 -51.63698 -39.24428 20 0.3900 0.107 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 1000 0.6800 0.345 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 500 0.4100 0.377 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 300 0.4400 0.334 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 150 0.9500 0.261 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 100 0.6000 0.130 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 60 0.1400 0.103 PS133/1_13-1 2022-11-04T17:18:45 -52.21394 -38.36809 20 0.3000 0.089 PS133/1_14-12 2022-11-05T23:11:36 -54.19511 -35.90754 231 0.4800 0.471 PS133/1_14-12 2022-11-05T23:11:36 -54.19511 -35.90754 200 0.2800 0.421 PS133/1_14-12 2022-11-05T23:11:36 -54.19511 -35.90754 150 0.4100 0.386 PS133/1_14-12 2022-11-05T23:11:36 -54.19511 -35.90754 100 0.3700 0.224 PS133/1_14-12 2022-11-05T23:11:36 -54.19511 -35.90754 60 0.2400 0.162 PS133/1_14-12 2022-11-05T23:11:36 -54.19511 -35.90754 20 0.3700 0.159 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 7000 0.9300 0.441 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 6000 0.5900 0.636 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 5000 0.4700 0.531 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 4000 0.6300 0.369 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 3000 0.6900 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 1000 0.6200 0.558 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 500 0.4500 0.364 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 150 0.6100 0.401 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 100 0.5700 0.176 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 60 0.5000 0.282 PS133/1_17-7 2022-11-09T19:36:26 -56.28945 -24.94616 20 0.3300 0.200