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On July 21, 2026, 1:31:26 PM UTC,
-
Moved Dissolved Fe (DFe) and Fe-binding dissolved organic ligands were analysed during two GEOTRACES cruises in the Mediterranean Sea in May and August 2013 - data from https://doi.nioz.nl/dataset/dissolved-fe- to https://doi.nioz.nl/dataset/dissolved-fe-dfe-and-fe-binding-dissolved-organic-ligands-were-analysed-during-two-geotraces-cruises
| f | 1 | { | f | 1 | { |
| 2 | "author": "Loes Gerringa (Royal Netherlands Institute for Sea | 2 | "author": "Loes Gerringa (Royal Netherlands Institute for Sea | ||
| 3 | Research)", | 3 | Research)", | ||
| 4 | "author_email": "rdm@nioz.nl", | 4 | "author_email": "rdm@nioz.nl", | ||
| 5 | "code": "7b.b.fj", | 5 | "code": "7b.b.fj", | ||
| 6 | "contributor": "Royal Netherlands Institute for Sea Research | 6 | "contributor": "Royal Netherlands Institute for Sea Research | ||
| 7 | (NIOZ)", | 7 | (NIOZ)", | ||
| 8 | "creator_user_id": "361616e8-28f6-4ce6-a725-1c633ee38d9e", | 8 | "creator_user_id": "361616e8-28f6-4ce6-a725-1c633ee38d9e", | ||
| 9 | "creators": | 9 | "creators": | ||
| 10 | \"Gerringa\",\"orcid\":\"0000-0002-3139-8352\",\"affiliation\":\"Royal | 10 | \"Gerringa\",\"orcid\":\"0000-0002-3139-8352\",\"affiliation\":\"Royal | ||
| 11 | Netherlands Institute for Sea | 11 | Netherlands Institute for Sea | ||
| 12 | or\":true,\"contactemailaddress\":\"rdm@nioz.nl\",\"formatted\":\"Loes | 12 | or\":true,\"contactemailaddress\":\"rdm@nioz.nl\",\"formatted\":\"Loes | ||
| 13 | Gerringa - Royal Netherlands Institute for Sea Research - ORCID: | 13 | Gerringa - Royal Netherlands Institute for Sea Research - ORCID: | ||
| 14 | 0000-0002-3139-8352 - Corresponding Author - | 14 | 0000-0002-3139-8352 - Corresponding Author - | ||
| 15 | :\"Slagter\",\"orcid\":\"0000-0002-4243-9869\",\"affiliation\":\"Royal | 15 | :\"Slagter\",\"orcid\":\"0000-0002-4243-9869\",\"affiliation\":\"Royal | ||
| 16 | Netherlands Institute for Sea | 16 | Netherlands Institute for Sea | ||
| 17 | pondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Hans | 17 | pondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Hans | ||
| 18 | Slagter - Royal Netherlands Institute for Sea Research - ORCID: | 18 | Slagter - Royal Netherlands Institute for Sea Research - ORCID: | ||
| 19 | Rijkenberg\",\"orcid\":\"0000-0002-1069-868X\",\"affiliation\":\"Royal | 19 | Rijkenberg\",\"orcid\":\"0000-0002-1069-868X\",\"affiliation\":\"Royal | ||
| 20 | Netherlands Institute for Sea | 20 | Netherlands Institute for Sea | ||
| 21 | ondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Micha | 21 | ondingauthor\":null,\"contactemailaddress\":null,\"formatted\":\"Micha | ||
| 22 | Rijkenberg - Royal Netherlands Institute for Sea Research - ORCID: | 22 | Rijkenberg - Royal Netherlands Institute for Sea Research - ORCID: | ||
| 23 | 0000-0002-1069-868X\"}]", | 23 | 0000-0002-1069-868X\"}]", | ||
| 24 | "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.fj", | 24 | "dataset_persistent_id": "DOI:10.25850/nioz/7b.b.fj", | ||
| 25 | "dates": "[{\"datefrom\":\"2013-05-14 | 25 | "dates": "[{\"datefrom\":\"2013-05-14 | ||
| 26 | 00:00:00.000\",\"dateto\":\"2013-06-05 | 26 | 00:00:00.000\",\"dateto\":\"2013-06-05 | ||
| 27 | ,\"type\":\"collected\",\"information\":null,\"formatted\":\"collected | 27 | ,\"type\":\"collected\",\"information\":null,\"formatted\":\"collected | ||
| 28 | from: 14/05/2013 to: 05/06/2013 \"},{\"datefrom\":\"2013-07-25 | 28 | from: 14/05/2013 to: 05/06/2013 \"},{\"datefrom\":\"2013-07-25 | ||
| 29 | 00:00:00.000\",\"dateto\":\"2013-08-11 | 29 | 00:00:00.000\",\"dateto\":\"2013-08-11 | ||
| 30 | ,\"type\":\"collected\",\"information\":null,\"formatted\":\"collected | 30 | ,\"type\":\"collected\",\"information\":null,\"formatted\":\"collected | ||
| 31 | from: 25/07/2013 to: 11/08/2013 \"}]", | 31 | from: 25/07/2013 to: 11/08/2013 \"}]", | ||
| 32 | "deposit_date": "2025-03-11", | 32 | "deposit_date": "2025-03-11", | ||
| 33 | "depositor": "loes gerringa (loes.gerringa@nioz.nl)", | 33 | "depositor": "loes gerringa (loes.gerringa@nioz.nl)", | ||
| 34 | "distribution_date": "2025-03-11", | 34 | "distribution_date": "2025-03-11", | ||
| 35 | "distributor": "Research Data Management(NIOZ Royal Netherlands | 35 | "distributor": "Research Data Management(NIOZ Royal Netherlands | ||
| 36 | Institute for Sea Research)", | 36 | Institute for Sea Research)", | ||
| 37 | "doi_date_published": "2025-03-11T10:08:06.8962839", | 37 | "doi_date_published": "2025-03-11T10:08:06.8962839", | ||
| 38 | "funding_references": | 38 | "funding_references": | ||
| 39 | mber\":\"822.01.015\",\"awardtitle\":\"Geotraces\",\"formatted\":\"NWO | 39 | mber\":\"822.01.015\",\"awardtitle\":\"Geotraces\",\"formatted\":\"NWO | ||
| 40 | - 822.01.015 - | 40 | - 822.01.015 - | ||
| 41 | ,{\"name\":\"NWO\",\"awardnumber\":\"822.01.018\",\"awardtitle\":\"PhD | 41 | ,{\"name\":\"NWO\",\"awardnumber\":\"822.01.018\",\"awardtitle\":\"PhD | ||
| 42 | - HS\",\"formatted\":\"NWO - 822.01.018 - PhD - HS\"}]", | 42 | - HS\",\"formatted\":\"NWO - 822.01.018 - PhD - HS\"}]", | ||
| 43 | "geographic_coverage": | 43 | "geographic_coverage": | ||
| 44 | itude_2\":\"-14.1665\",\"longitude_1\":\"31.94044\",\"formatted\":\"N: | 44 | itude_2\":\"-14.1665\",\"longitude_1\":\"31.94044\",\"formatted\":\"N: | ||
| 45 | 40.96124 S: 33.8426 E: 31.94044 W: -14.1665\"}]", | 45 | 40.96124 S: 33.8426 E: 31.94044 W: -14.1665\"}]", | ||
| 46 | "groups": [], | 46 | "groups": [], | ||
| 47 | "id": "1e058c9f-cf05-4dbe-aa2b-a2cbaeae2a47", | 47 | "id": "1e058c9f-cf05-4dbe-aa2b-a2cbaeae2a47", | ||
| 48 | "isopen": false, | 48 | "isopen": false, | ||
| 49 | "license_title": null, | 49 | "license_title": null, | ||
| 50 | "maintainer": "loes", | 50 | "maintainer": "loes", | ||
| 51 | "maintainer_email": "loes.gerringa@nioz.nl", | 51 | "maintainer_email": "loes.gerringa@nioz.nl", | ||
| 52 | "metadata_created": "2025-03-11T08:52:53.248006", | 52 | "metadata_created": "2025-03-11T08:52:53.248006", | ||
| n | 53 | "metadata_modified": "2025-03-11T09:13:24.423157", | n | 53 | "metadata_modified": "2026-07-21T13:31:26.662320", |
| 54 | "name": "dissolved-fe-", | 54 | "name": | ||
| 55 | dissolved-organic-ligands-were-analysed-during-two-geotraces-cruises", | ||||
| 55 | "notes": "Method: Competing ligand exchange adsorptive cathodic | 56 | "notes": "Method: Competing ligand exchange adsorptive cathodic | ||
| 56 | stripping voltammetry (CLE-aCSV) was performed using two systems | 57 | stripping voltammetry (CLE-aCSV) was performed using two systems | ||
| 57 | consisting of a \u03bcAutolab potentionstat (Metrohm Autolab B.V.), a | 58 | consisting of a \u03bcAutolab potentionstat (Metrohm Autolab B.V.), a | ||
| 58 | 663 VA stand with a Hg drop electrode (Metrohm) and a 778 sample | 59 | 663 VA stand with a Hg drop electrode (Metrohm) and a 778 sample | ||
| 59 | processor with ancillary pumps and dosimats (Metrohm), all controlled | 60 | processor with ancillary pumps and dosimats (Metrohm), all controlled | ||
| 60 | using a consumer laptop running Nova 1.9 (Metrohm Autolab B.V.). The | 61 | using a consumer laptop running Nova 1.9 (Metrohm Autolab B.V.). The | ||
| 61 | characteristics of Fe-binding dissolved organic ligands, that is both | 62 | characteristics of Fe-binding dissolved organic ligands, that is both | ||
| 62 | the ligand concentration [Lt] (in nano-equivalents of molar Fe, nEq of | 63 | the ligand concentration [Lt] (in nano-equivalents of molar Fe, nEq of | ||
| 63 | M Fe) and the conditional binding constant K\u2032 (M\u22121) with | 64 | M Fe) and the conditional binding constant K\u2032 (M\u22121) with | ||
| 64 | respect to [Fe3+], commonly expressed as log K\u2032 are determined | 65 | respect to [Fe3+], commonly expressed as log K\u2032 are determined | ||
| 65 | using 2- (2-Thiazolylazo)-p-cresol (TAC) as an added measuring ligand | 66 | using 2- (2-Thiazolylazo)-p-cresol (TAC) as an added measuring ligand | ||
| 66 | (Croot and Johansson, 2000). TAC was used with a final concentration | 67 | (Croot and Johansson, 2000). TAC was used with a final concentration | ||
| 67 | of 10 \u03bcM, and the complex (TAC)2-Fe was measured after | 68 | of 10 \u03bcM, and the complex (TAC)2-Fe was measured after | ||
| 68 | equilibration (> 6 h). The increments of Fe concentrations used in the | 69 | equilibration (> 6 h). The increments of Fe concentrations used in the | ||
| 69 | titration were 0 (2\u00d7), 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.5, 2, 2.5, | 70 | titration were 0 (2\u00d7), 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.5, 2, 2.5, | ||
| 70 | 3, 4, 6, and 8 (2\u00d7) nM. Using a non-linear regression of the | 71 | 3, 4, 6, and 8 (2\u00d7) nM. Using a non-linear regression of the | ||
| 71 | Langmuir isotherm, the electrical signal recorded in nA (nano-Ampere) | 72 | Langmuir isotherm, the electrical signal recorded in nA (nano-Ampere) | ||
| 72 | was converted into a concentration in nM, and the ligand concentration | 73 | was converted into a concentration in nM, and the ligand concentration | ||
| 73 | [Lt] and the binding strength K were estimated (Gerringa et al., | 74 | [Lt] and the binding strength K were estimated (Gerringa et al., | ||
| 74 | 2014). Using [Lt] and K, the concentration of Fe bound to a natural | 75 | 2014). Using [Lt] and K, the concentration of Fe bound to a natural | ||
| 75 | Febinding ligand [FeL], the concentration of inorganic Fe [Fe\u2032] | 76 | Febinding ligand [FeL], the concentration of inorganic Fe [Fe\u2032] | ||
| 76 | and the concentration of natural unbound ligand [L\u2032] were | 77 | and the concentration of natural unbound ligand [L\u2032] were | ||
| 77 | calculated under the assumption of chemical equilibrium. Since K is | 78 | calculated under the assumption of chemical equilibrium. Since K is | ||
| 78 | log transformed, the standard error (SE) is asymmetric to lower and | 79 | log transformed, the standard error (SE) is asymmetric to lower and | ||
| 79 | upper values; therefore two SE values are obtained, one to lower | 80 | upper values; therefore two SE values are obtained, one to lower | ||
| 80 | (down) and to upper (up) values.", | 81 | (down) and to upper (up) values.", | ||
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| 84 | "approval_status": "approved", | 85 | "approval_status": "approved", | ||
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| 99 | "related_identifier": | 99 | "related_identifier": | ||
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| 155 | "id": "e00af205-282d-4b55-931f-fbefee0cf900", | 155 | "id": "e00af205-282d-4b55-931f-fbefee0cf900", | ||
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| 170 | "name": "mediterranean sea", | 170 | "name": "mediterranean sea", | ||
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| 189 | "title": "Dissolved Fe (DFe) and Fe-binding dissolved organic | 189 | "title": "Dissolved Fe (DFe) and Fe-binding dissolved organic | ||
| 190 | ligands were analysed during two GEOTRACES cruises in the | 190 | ligands were analysed during two GEOTRACES cruises in the | ||
| 191 | Mediterranean Sea in May and August 2013 - data", | 191 | Mediterranean Sea in May and August 2013 - data", | ||
| 192 | "type": "dataset", | 192 | "type": "dataset", | ||
| 193 | "url": "https://doi.org/10.25850/nioz/7b.b.fj", | 193 | "url": "https://doi.org/10.25850/nioz/7b.b.fj", | ||
| 194 | "version": "1" | 194 | "version": "1" | ||
| 195 | } | 195 | } |