/* DATA DESCRIPTION:
Citation:	Pérez-Rodríguez, Marta; Biester, Harald (2026): Size-fractionated particulate total mercury and monomethylmercury concentrations in the Southern Ocean during the PS133/1 expedition (22 October – 9 November 2022) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.987318
Abstract:	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.
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:	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
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: -54.175900 * MEDIAN LONGITUDE: -28.171426 * SOUTH-BOUND LATITUDE: -56.266660 * WEST-BOUND LONGITUDE: -39.997970 * NORTH-BOUND LATITUDE: -51.289140 * EAST-BOUND LONGITUDE: -24.841270
	DATE/TIME START: 2022-10-22T15:51:21 * DATE/TIME END: 2022-11-09T11:26:24
	MINIMUM DEPTH, water: 25 m * MAXIMUM DEPTH, water: 350 m
Event(s):	PS133/1_6-15 * LATITUDE START: -52.327150 * LONGITUDE START: -24.922770 * LATITUDE END: -52.327510 * LONGITUDE END: -24.881250 * DATE/TIME START: 2022-10-22T15:51:21 * DATE/TIME END: 2022-10-22T18:57:32 * ELEVATION START: -3963.5 m * ELEVATION END: -4435.5 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/3173 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: In situ pump (ISP) * COMMENT: Deployment depth: 410 m
	PS133/1_9-17 * LATITUDE START: -51.289140 * LONGITUDE START: -39.997970 * LATITUDE END: -51.288850 * LONGITUDE END: -40.000360 * DATE/TIME START: 2022-11-03T07:17:43 * DATE/TIME END: 2022-11-03T10:57:18 * ELEVATION START: -3789.3 m * ELEVATION END: -3785.1 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/3173 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: In situ pump (ISP) * COMMENT: Deployment depth: 400 m
	PS133/1_15-2 * LATITUDE START: -55.213330 * LONGITUDE START: -26.170210 * LATITUDE END: -55.215400 * LONGITUDE END: -26.162500 * DATE/TIME START: 2022-11-07T14:01:10 * DATE/TIME END: 2022-11-07T16:54:09 * ELEVATION START: -7798.9 m * ELEVATION END: -7801.0 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/3173 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: In situ pump (ISP) * COMMENT: Deployment depth: 400 m
	PS133/1_16-2 * LATITUDE START: -55.783220 * LONGITUDE START: -24.841270 * LATITUDE END: -55.799330 * LONGITUDE END: -24.840110 * DATE/TIME START: 2022-11-08T12:41:14 * DATE/TIME END: 2022-11-08T15:43:36 * ELEVATION START: -4000.9 m * ELEVATION END: -4857.5 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/3173 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: In situ pump (ISP) * COMMENT: Deployment depth: 400 m
	PS133/1_17-4 * LATITUDE START: -56.266660 * LONGITUDE START: -24.924910 * LATITUDE END: -56.330410 * LONGITUDE END: -24.862570 * DATE/TIME START: 2022-11-09T11:26:24 * DATE/TIME END: 2022-11-09T15:17:18 * ELEVATION START: -7816.6 m * ELEVATION END: -7724.9 m * O2A REGISTRY URI: https://registry.o2a-data.de/items/3173 * CAMPAIGN: PS133/1 (Island Impact) * BASIS: Polarstern (URI: https://doi.org/10.17815/jlsrf-3-163) * METHOD/DEVICE: In situ pump (ISP) * COMMENT: Deployment depth: 400 m
Parameter(s):	Event label (Event) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de)
	DATE/TIME (Date/Time) * GEOCODE * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de)
	LATITUDE (Latitude) * GEOCODE * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de)
	LONGITUDE (Longitude) * GEOCODE * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de)
	DEPTH, water [m] (Depth water) * GEOCODE * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de)
	Mercury, particulate [ng/g] (Hg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Thermal decomposition amalgamation - atomic absorption spectrometer (TDA AAS), Milestone, DMA EVO * COMMENT: 2.2–51 µm
	Monomethylmercury, particulate [ng/g] (MMHg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Gas chromatograph - cold vapor atomic fluorescence spectrometery (GC-CVAFS), Brooks Rand, Methylmercury Manual System * COMMENT: 2.2–51 µm
	Mercury, particulate [pmol/l] (Hg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Thermal decomposition amalgamation - atomic absorption spectrometer (TDA AAS), Milestone, DMA EVO * COMMENT: 2.2–51 µm; per litre of water
	Monomethylmercury, particulate [pmol/l] (MMHg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Gas chromatograph - cold vapor atomic fluorescence spectrometery (GC-CVAFS), Brooks Rand, Methylmercury Manual System * COMMENT: 2.2–51 µm; per litre of water
	Mercury, particulate [ng/g] (Hg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Thermal decomposition amalgamation - atomic absorption spectrometer (TDA AAS), Milestone, DMA EVO * COMMENT: >51 µm
	Monomethylmercury, particulate [ng/g] (MMHg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Gas chromatograph - cold vapor atomic fluorescence spectrometery (GC-CVAFS), Brooks Rand, Methylmercury Manual System * COMMENT: >51 µm
	Mercury, particulate [pmol/l] (Hg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Thermal decomposition amalgamation - atomic absorption spectrometer (TDA AAS), Milestone, DMA EVO * COMMENT: >51 µm; per litre of water
	Monomethylmercury, particulate [pmol/l] (MMHg part) * PI: Pérez-Rodríguez, Marta (https://orcid.org/0000-0001-7139-3049, m.perez-rodriguez@tu-braunschweig.de) * METHOD/DEVICE: Gas chromatograph - cold vapor atomic fluorescence spectrometery (GC-CVAFS), Brooks Rand, Methylmercury Manual System * COMMENT: >51 µm; per litre of water
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:	186 data points
*/
Event	Date/Time	Latitude	Longitude	Depth water [m]	Hg part [ng/g] (2.2–51 µm, Thermal decomposit...)	MMHg part [ng/g] (2.2–51 µm, Gas chromatograph ...)	Hg part [pmol/l] (2.2–51 µm; per litre of water...)	MMHg part [pmol/l] (2.2–51 µm; per litre of water...)	Hg part [ng/g] (>51 µm, Thermal decomposition...)	MMHg part [ng/g] (>51 µm, Gas chromatograph - c...)	Hg part [pmol/l] (>51 µm; per litre of water, T...)	MMHg part [pmol/l] (>51 µm; per litre of water, G...)
PS133/1_6-15	2022-10-22T15:51:21	-52.32715	-24.92277	25	32.04	3.380	0.123	0.012	31.92	8.720	0.025	0.007
PS133/1_6-15	2022-10-22T15:51:21	-52.32715	-24.92277	50	34.46	4.970	0.131	0.018	48.00	14.310	0.036	0.011
PS133/1_6-15	2022-10-22T15:51:21	-52.32715	-24.92277	75	15.11	0.670			10.20	0.240		
PS133/1_6-15	2022-10-22T15:51:21	-52.32715	-24.92277	100	35.37	6.110	0.174	0.030	43.37	9.730	0.020	0.004
PS133/1_6-15	2022-10-22T15:51:21	-52.32715	-24.92277	150	32.00	5.380	0.115	0.019	32.67	6.040	0.007	0.001
PS133/1_6-15	2022-10-22T15:51:21	-52.32715	-24.92277	350	19.91	0.480	0.045	0.001				
PS133/1_9-17	2022-11-03T07:17:43	-51.28914	-39.99797	25	41.91	2.960	0.136	0.009	101.58	8.110	0.066	0.005
PS133/1_9-17	2022-11-03T07:17:43	-51.28914	-39.99797	50	43.65	1.635	0.174	0.006	67.58	50.340	0.041	0.030
PS133/1_9-17	2022-11-03T07:17:43	-51.28914	-39.99797	75	21.97	0.380	0.070	0.001	34.78	12.165	0.011	0.004
PS133/1_9-17	2022-11-03T07:17:43	-51.28914	-39.99797	100	36.29	5.415	0.557	0.074	18.89	3.750	0.019	0.004
PS133/1_9-17	2022-11-03T07:17:43	-51.28914	-39.99797	150	25.30	0.405			9.33	0.730		
PS133/1_9-17	2022-11-03T07:17:43	-51.28914	-39.99797	350	10.29	0.373	0.049	0.002				
PS133/1_15-2	2022-11-07T14:01:10	-55.21333	-26.17021	25	55.94	10.000	0.135	0.024	21.46	5.200	0.005	0.001
PS133/1_15-2	2022-11-07T14:01:10	-55.21333	-26.17021	50	45.24	2.110	0.210	0.010	19.10	1.610	0.004	0.000
PS133/1_15-2	2022-11-07T14:01:10	-55.21333	-26.17021	75	24.57	1.080			23.64	1.140		
PS133/1_15-2	2022-11-07T14:01:10	-55.21333	-26.17021	100	34.39	10.130	0.206	0.061	33.33	5.740	0.010	0.002
PS133/1_15-2	2022-11-07T14:01:10	-55.21333	-26.17021	150	8.52	0.070						
PS133/1_15-2	2022-11-07T14:01:10	-55.21333	-26.17021	350	17.75	0.210	0.049	0.001				
PS133/1_16-2	2022-11-08T12:41:14	-55.78322	-24.84127	25	37.35	7.260	0.126	0.024	45.44	2.320	0.008	0.000
PS133/1_16-2	2022-11-08T12:41:14	-55.78322	-24.84127	50	6.68	3.490	0.195	0.101	29.84	0.860	0.039	0.001
PS133/1_16-2	2022-11-08T12:41:14	-55.78322	-24.84127	75	21.53	4.310			27.26	0.630		
PS133/1_16-2	2022-11-08T12:41:14	-55.78322	-24.84127	100	28.22	3.250	0.519	0.059				
PS133/1_16-2	2022-11-08T12:41:14	-55.78322	-24.84127	150	11.32	0.250	0.239	0.005				
PS133/1_16-2	2022-11-08T12:41:14	-55.78322	-24.84127	350	11.69	0.700	0.048	0.003				
PS133/1_17-4	2022-11-09T11:26:24	-56.26666	-24.92491	25	49.18	8.590	0.118	0.018	35.50	17.590	0.005	0.002
PS133/1_17-4	2022-11-09T11:26:24	-56.26666	-24.92491	50	38.94	11.130	0.137	0.034	18.57	1.525	0.004	0.000
PS133/1_17-4	2022-11-09T11:26:24	-56.26666	-24.92491	75	28.06	1.030	0.263	0.011	10.00	0.390	0.009	0.000
PS133/1_17-4	2022-11-09T11:26:24	-56.26666	-24.92491	100	40.70	1.210	0.122	0.004	20.93	2.310	0.005	0.001
PS133/1_17-4	2022-11-09T11:26:24	-56.26666	-24.92491	150	6.85	0.090	0.088	0.001				
PS133/1_17-4	2022-11-09T11:26:24	-56.26666	-24.92491	350	14.04	0.150	0.044	0.000