Knoke Melina melina.knoke1@uni-oldenburg.de 0000-0002-5270-8487 Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Niggemann Jutta jutta.niggemann@uni-oldenburg.de 0000-0003-1237-9233 Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Wagner Sasha wagnes3@rpi.edu Rensselaer Polytechnic Institute RPI https://www.rpi.edu https://ror.org/01rtyzb94 Förster Oliver oliver.foerster1@uol.de Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Leclerc Ahlyia J. leclea@rpi.edu Rensselaer Polytechnic Institute RPI https://www.rpi.edu https://ror.org/01rtyzb94 Ulber Ina Ida ina.ida.ulber@uol.de Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Günther Jana jana_guenther@web.de Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Simon Heike heike.simon@uol.de Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg ICBM https://uol.de/en/icbm https://ror.org/0060pja03 2026 Temperature-dependent changes in dissolved black carbon during heating of marine and terrestrial dissolved organic matter reference materials dataset https://doi.pangaea.de/10.1594/PANGAEA.997430 2026-09-29T10:19:56 Dissolved black carbon (DBC) is a condensed aromatic fraction of dissolved organic matter (DOM) and an important component of the marine carbon cycle. Hydrothermal systems have been suggested as a potential source of DBC to the deep ocean, but the mobilization and origin of DBC in organic-rich hydrothermal sediments remain poorly constrained. This dataset contains data from heating experiments performed to investigate the temperature-dependent mobilization of dissolved black carbon (DBC) from marine and terrestrial dissolved organic matter (DOM) reference materials under controlled aqueous heating conditions. The experiments were conducted with solid-phase extracted (SPE) marine DOM from North Equatorial Pacific Intermediate Water (NEqPIW), sampled and isolated at the Natural Energy Laboratory of Hawaii Authority (NELHA) as described by Green et al. (2014), and Suwannee River Natural Organic Matter (SRNOM), a terrestrial DOM reference material provided by the International Humic Substances Society (IHSS) and fisrt described by Serkiz & Perdue (1990). The reference materials were dissolved in ultrapure water and afterwards subjected to temperature treatments of 25, 80, 100, and 180 °C. DBC was determined using the benzene polycarboxylic acid (BPCA) method after Dittmar et al. (2008) and Wagner et al., (2017). BPCAs were quantified by ultra-performance liquid chromatography (UPLC), and DBC concentrations were calculated from benzene pentacarboxylic acid (B5CA) and benzene hexacarboxylic acid (B6CA) concentrations according to Stubbins et al. (2015). The dataset includes benzene tetracarboxylic acid (B4CA), B5CA, and B6CA concentrations, BPCA ratios, and calculated DBC concentrations for the different temperature treatments. Knoke Melina melina.knoke1@uni-oldenburg.de 0000-0002-5270-8487 Böning Philipp p.boening@icbm.de 0009-0003-7375-4567 Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 Friebe Matthias matthias.friebe@uol.de Gründken Eleonore eleonore.gruendken@uni-oldenburg.de Günther Jana jana_guenther@web.de Klaproth Katrin katrin.klaproth@uol.de Ulber Ina ina.ida.ulber@uni-oldenburg.de Simon Heike heike.simon@uol.de Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 2025 Molecular composition of dissolved organic matter and biogeochemical parameters in porewater of Guaymas Basin (Gulf of California) deep subsurface sediments dataset bundled publication https://doi.org/10.1594/PANGAEA.974052 Knoke Melina melina.knoke1@uni-oldenburg.de 0000-0002-5270-8487 Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 Niggemann Jutta jutta.niggemann@uni-oldenburg.de 0000-0003-1237-9233 Wagner Sasha wagnes3@rpi.edu Förster Oliver oliver.foerster1@uol.de Leclerc Ahlyia J. leclea@rpi.edu Ulber Ina Ida ina.ida.ulber@uol.de Günther Jana jana_guenther@web.de Simon Heike heike.simon@uol.de Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 2026 BPCA-derived dissolved black carbon concentrations in porewater and hot-water Soxhlet extracts of Guaymas Basin deep subsurface sediments dataset https://doi.pangaea.de/10.1594/PANGAEA.997437 Knoke Melina melina.knoke1@uni-oldenburg.de 0000-0002-5270-8487 Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 Niggemann Jutta jutta.niggemann@uni-oldenburg.de 0000-0003-1237-9233 Wagner Sasha wagnes3@rpi.edu Förster Oliver oliver.foerster1@uol.de Leclerc Ahlyia J. leclea@rpi.edu Ulber Ina Ida ina.ida.ulber@uol.de Günther Jana jana_guenther@web.de Simon Heike heike.simon@uol.de Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 2026 Stable carbon isotope composition (δ¹³C) of dissolved black carbon in hot-water Soxhlet extracts [MS1.1] of Guaymas Basin deep subsurface sediments dataset https://doi.pangaea.de/10.1594/PANGAEA.997438 Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 2008 The molecular level determination of black carbon in marine dissolved organic matter journal article Organic Geochemistry 39(4) https://doi.org/10.1016/j.orggeochem.2008.01.015 396-407 Green Nelson W Perdue E Michael Aiken George R Butler Kenna D Chen Hongmei hongmei.chen@uni-leipzig.de Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 Niggemann Jutta jutta.niggemann@uni-oldenburg.de 0000-0003-1237-9233 Stubbins Aron aron.stubbins@skio.uga.edu 0000-0002-3994-1946 2014 An intercomparison of three methods for the large-scale isolation of oceanic dissolved organic matter journal article Marine Chemistry 161 https://doi.org/10.1016/j.marchem.2014.01.012 14-19 Kohler Kevin E Gill Shaun M 2006 Coral Point Count with Excel extensions (CPCe): A Visual Basic program for the determination of coral and substrate coverage using random point count methodology journal article Computers & Geosciences 32(9) https://doi.org/10.1016/j.cageo.2005.11.009 1259-1269 Serkiz Steven M Perdue E Michael 1990 Isolation of dissolved organic matter from the suwannee river using reverse osmosis journal article Water Research 24(7) https://doi.org/10.1016/0043-1354(90)90142-S 911-916 Stubbins Aron aron.stubbins@skio.uga.edu 0000-0002-3994-1946 Spencer Robert G M 0000-0003-0777-0748 Mann Paul James paul.mann@northumbria.ac.uk 0000-0002-6221-3533 Holmes R Max 0000-0002-6413-9154 McClelland James W 0000-0001-9619-8194 Niggemann Jutta jutta.niggemann@uni-oldenburg.de 0000-0003-1237-9233 Dittmar Thorsten thorsten.dittmar@uol.de 0000-0002-3462-0107 2015 Utilizing colored dissolved organic matter to derive dissolved black carbon export by arctic rivers journal article Frontiers in Earth Science 3 https://doi.org/10.3389/feart.2015.00063 Wagner Sasha wagnes3@rpi.edu Brandes Jay jay.brandes@skio.uga.edu Goranov Aleksandar I Drake Travis W 0000-0002-7564-974X Spencer Robert G M 0000-0003-0777-0748 Stubbins Aron aron.stubbins@skio.uga.edu 0000-0002-3994-1946 2017 Online quantification and compound‐specific stable isotopic analysis of black carbon in environmental matrices via liquid chromatography‐isotope ratio mass spectrometry journal article Limnology and Oceanography-Methods 15(12) https://doi.org/10.1002/lom3.10219 995-1006 -156.0667 8.167196 19.7333 53.152839 -75.998381 36.61159075 2009-09-24T00:00:00 2025-09-18T00:00:00 -674.0 -674.0 Deutsche Forschungsgemeinschaft, Bonn DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 447583997 IODP GUAYMAS BASIN - The biogeochemistry of dissolved organic matter in hydrothermal Guaymas Basin sediments https://uol.de/en/icbm/marine-geochemistry/research/dom-at-interfaces/iodp-guaymas-basin BPCA_NEqPIW_heating_exp 53.152839 8.167196 Oldenburg, Germany 2025-09-12T00:00:00 2025-09-18T00:00:00 Laboratory experiment Experimental analysis at the Institute for Chemistry and Biology of the Marine Environment (ICBM), School of Mathematics and Science, Carl von Ossietzky Universität Oldenburg, Ammerländer Heerstraße 114-118, 26129 Oldenburg, Germany BPCA_SRNOM_heating_exp 42.728919 -73.67974 Troy, New York, USA 2024-01-08T00:00:00 2024-04-24T00:00:00 Laboratory experiment Experimental analysis at the Department of Earth and Environmental Sciences, Rensselaer Polytechnic Institute, Troy, New York, USA NELHA_NEqPIW_2009 North Equatorial Pacific Intermediate Water 19.7333 -156.0667 Kailua‑Kona, Hawaii, USA -674.0 2009-09-24T00:00:00 Solid‑phase extracted (SPE) of filtered seawater according to Green et al. 2014 https://doi.org/10.1016/j.marchem.2014.01.012 SRNOM_2012 Suwannee River Natural Organic Matter 30.831305 -82.41428 Suwannee River, Georgia, USA 2012-05-03T00:00:00 2012-05-15T00:00:00 Reverse osmosis isolation of filtered river water (IHSS protocol) according to Serkiz and Perdue (1990) https://doi.org/10.1016/0043-1354(90)90142-S 585 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Event Type of study Study type type Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Study type Sample code/label Sample label Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Sample label Batch Batch Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Batch Treatment: temperature T:temp °C treatment Temperature Θ http://dbpedia.org/resource/Temperature Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Experimental temperature T:temp [°C] Replicate Repl Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Repl Sample source Sample source Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Dissolved organic matter reference material: North Equatorial Pacific Intermediate Water (NEqPIW) ist one of the oldest water masses in the ocean. Its sampling and processing were describend in Green et al. (2014). The second DOM sample Suwannee River Natural Organic Matter (SRNOM) was obtained as a powder from the International Humic Substances Society (IHSS) its sampling and processing were described in detail by Serkiz & Perdue (1990) Sample source Benzenehexacarboxylic acid B6CA µmol/l Molar Concentration Benzene polycarboxylic acid method (BPCA); measured with Ultra Performance Liquid Chromatograph (UPLC), Waters Corporation, ACQUITY Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 quantified after nitric acid oxidation according to Dittmar (2008) B6CA [µmol/l] Benzenepentacarboxylic acid B5CA µmol/l Molar Concentration Benzene polycarboxylic acid method (BPCA); measured with Ultra Performance Liquid Chromatograph (UPLC), Waters Corporation, ACQUITY Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 quantified after nitric acid oxidation according to Dittmar (2008) B5CA [µmol/l] Benzenetetracarboxylic acid B4CA µmol/l Molar Concentration Benzene polycarboxylic acid method (BPCA); measured with Ultra Performance Liquid Chromatograph (UPLC), Waters Corporation, ACQUITY Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 quantified after nitric acid oxidation according to Dittmar (2008) B4CA [µmol/l] Black carbon, dissolved DBC µmol/l black carbon https://en.wikipedia.org/wiki/Black_carbon dissolved http://purl.obolibrary.org/obo/PATO_0001986 Molar Concentration Calculated according to Stubbins et al. (2015) Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 calculated from B5CA and B6CA concentrations DBC [µmol/l] Black carbon, dissolved DBC mg/l black carbon https://en.wikipedia.org/wiki/Black_carbon dissolved http://purl.obolibrary.org/obo/PATO_0001986 Density http://dbpedia.org/resource/Density Calculated according to Stubbins et al. (2015) Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 calculated from B5CA and B6CA concentrations DBC [mg/l] Benzenepentacarboxylic acid/Benzenehexacarboxylic acid ratio B6CA/B5CA ratio Calculated Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Molar ratio of B6CA to B5CA B6CA/B5CA Benzenepentacarboxylic acid/Benzenetetracarboxylic acid ratio B5CA/B4CA ratio Calculated Seidel Michael m.seidel@uol.de 0000-0003-0934-1939 Molar ratio of B6CA to B5CA B5CA/B4CA CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels Dissolved Black Carbon Dissolved Organic Matter Guaymas Basin hydrothermal mobilization IODP Laboratory experiment porewater author100500 author101522 author101580 author108860 author108861 author108862 author109456 author119059 author119060 author119061 author119076 author119077 author119201 author119207 author28319 author32411 author37338 author42808 author42809 author46053 author53674 author53785 author54503 author62897 author63589 author63595 author68043 author69917 author79349 author83898 author97063 award3467 curlevel30 event3507930 event3507931 event3507932 event3507933 funder213 geocode1599 geocode1600 geocode1601 geocode8128 inst22987 inst461 journal10609 journal10808 journal12339 journal16185 journal16812 journal3907 license21 method19614 method19615 method19618 method19619 method50 method8239 param105163 param119291 param129269 param185520 param190305 param190309 param513560 param532711 param577525 param577526 param577527 param577528 param790 pi53785 ref137389 ref141708 ref141766 ref141768 ref141771 ref37338 refds974052 refds997437 refds997438 term1073493 term2663825 term33323 term38841 term40462 term41013 term43792 term43972 term44030 term48527 term49036 term492 term49506 term51513 term76960 term78587 term78591 term78592 term78593