Articles | Volume 16, issue 6
https://doi.org/10.5194/bg-16-1305-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-1305-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
28 Mar 2019
Research article |
| 28 Mar 2019
| 28 Mar 2019
Distribution of Fe isotopes in particles and colloids in the salinity gradient along the Lena River plume, Laptev Sea
Sarah Conrad
CORRESPONDING AUTHOR
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
Johan Ingri
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
Johan Gelting
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
Fredrik Nordblad
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
Emma Engström
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
ALS Laboratory Group, ALS Scandinavia AB, Aurorum 10, Luleå,
Sweden
Ilia Rodushkin
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
ALS Laboratory Group, ALS Scandinavia AB, Aurorum 10, Luleå,
Sweden
Per S. Andersson
Department of Geosciences, Swedish Museum of Natural History,
Stockholm, Sweden
Don Porcelli
Department of Earth Sciences, Oxford University, Oxford, UK
Örjan Gustafsson
Department of Environmental Science and Analytical Chemistry,
Stockholm University, Stockholm, Sweden
Igor Semiletov
International Arctic Research Center (IARC), University of Alaska,
Fairbanks, AK, USA
Pacific Oceanological Institute (POI), Far Eastern Branch of the
Russian Academy of Sciences (FEBRAS), Vladivostok, Russia
Tomsk National Research Politechnical University, Arctic Seas Carbon International Research Laboratory, Tomsk, Russia
Björn Öhlander
Department of Chemical Engineering and Geosciences, Luleå
University of Technology, Luleå, Sweden
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Cited
16 citations as recorded by crossref.
- Spring flood induced shifts in Fe speciation and fate at increased salinity S. Herzog et al. https://doi.org/10.1016/j.apgeochem.2019.104385
- Distribution of dissolved aluminum and dissolved iron in Kongsfjorden: A glacial fjord in the Arctic Z. Shen et al. https://doi.org/10.1016/j.marchem.2024.104399
- Iron Isotope Fractionation during Bio- and Photodegradation of Organoferric Colloids in Boreal Humic Waters O. Oleinikova et al. https://doi.org/10.1021/acs.est.9b02797
- Northern High-Latitude Organic Soils As a Vital Source of River-Borne Dissolved Iron to the Ocean R. Krachler & R. Krachler https://doi.org/10.1021/acs.est.1c01439
- Isotopic insights into iron and sulfur cycling in acid sulfate soils: Implications of seasonal redox fluctuations S. Conrad et al. https://doi.org/10.1016/j.chemgeo.2025.123151
- Seasonal Variations of Redox State in Hemiboreal Soils Indicated by Changes of δ56Fe, Sulfate, and Nitrate in Headwater Streams S. Conrad et al. https://doi.org/10.1021/acsearthspacechem.9b00237
- Iron and nitrate-driven anaerobic methane oxidation in methane seep sediments of the Laptev Sea D. Purgina et al. https://doi.org/10.1016/j.chemgeo.2025.123170
- Iron isotopes reveal the sources of Fe-bearing particles and colloids in the Lena River basin C. Hirst et al. https://doi.org/10.1016/j.gca.2019.11.004
- Land influence decouples benthic nutrient fluxes on the Siberian Arctic Ocean shelves B. Wild et al. https://doi.org/10.1002/lol2.70039
- Preferential preservation of pre-aged terrestrial organic carbon by reactive iron in estuarine particles and coastal sediments of a large river-dominated estuary B. Zhao et al. https://doi.org/10.1016/j.gca.2023.01.023
- Iron isotopes reveal seasonal variations in the mechanisms for iron-bearing particle and colloid formation in the Lena River catchment, NE Siberia C. Hirst et al. https://doi.org/10.1016/j.gca.2023.09.016
- Using Remotely Sensed Sea Surface Salinity and Colored Detrital Matter to Characterize Freshened Surface Layers in the Kara and Laptev Seas during the Ice-Free Season M. Umbert et al. https://doi.org/10.3390/rs13193828
- Processes controlling the authigenic 10Be/9Be ratio in the Arctic Ocean A. Ollive et al. https://doi.org/10.1016/j.gca.2025.12.047
- Iron Isotope Biogeochemical Cycling in the Western Arctic Ocean R. Zhang et al. https://doi.org/10.1029/2021GB006977
- Arctic – Atlantic Exchange of the Dissolved Micronutrients Iron, Manganese, Cobalt, Nickel, Copper and Zinc With a Focus on Fram Strait S. Krisch et al. https://doi.org/10.1029/2021GB007191
- Distribution of dissolved trace elements in the Laptev Sea affected by the Lena River discharge Y. Moiseeva et al. https://doi.org/10.1016/j.marpolbul.2024.116397
16 citations as recorded by crossref.
- Spring flood induced shifts in Fe speciation and fate at increased salinity S. Herzog et al. https://doi.org/10.1016/j.apgeochem.2019.104385
- Distribution of dissolved aluminum and dissolved iron in Kongsfjorden: A glacial fjord in the Arctic Z. Shen et al. https://doi.org/10.1016/j.marchem.2024.104399
- Iron Isotope Fractionation during Bio- and Photodegradation of Organoferric Colloids in Boreal Humic Waters O. Oleinikova et al. https://doi.org/10.1021/acs.est.9b02797
- Northern High-Latitude Organic Soils As a Vital Source of River-Borne Dissolved Iron to the Ocean R. Krachler & R. Krachler https://doi.org/10.1021/acs.est.1c01439
- Isotopic insights into iron and sulfur cycling in acid sulfate soils: Implications of seasonal redox fluctuations S. Conrad et al. https://doi.org/10.1016/j.chemgeo.2025.123151
- Seasonal Variations of Redox State in Hemiboreal Soils Indicated by Changes of δ56Fe, Sulfate, and Nitrate in Headwater Streams S. Conrad et al. https://doi.org/10.1021/acsearthspacechem.9b00237
- Iron and nitrate-driven anaerobic methane oxidation in methane seep sediments of the Laptev Sea D. Purgina et al. https://doi.org/10.1016/j.chemgeo.2025.123170
- Iron isotopes reveal the sources of Fe-bearing particles and colloids in the Lena River basin C. Hirst et al. https://doi.org/10.1016/j.gca.2019.11.004
- Land influence decouples benthic nutrient fluxes on the Siberian Arctic Ocean shelves B. Wild et al. https://doi.org/10.1002/lol2.70039
- Preferential preservation of pre-aged terrestrial organic carbon by reactive iron in estuarine particles and coastal sediments of a large river-dominated estuary B. Zhao et al. https://doi.org/10.1016/j.gca.2023.01.023
- Iron isotopes reveal seasonal variations in the mechanisms for iron-bearing particle and colloid formation in the Lena River catchment, NE Siberia C. Hirst et al. https://doi.org/10.1016/j.gca.2023.09.016
- Using Remotely Sensed Sea Surface Salinity and Colored Detrital Matter to Characterize Freshened Surface Layers in the Kara and Laptev Seas during the Ice-Free Season M. Umbert et al. https://doi.org/10.3390/rs13193828
- Processes controlling the authigenic 10Be/9Be ratio in the Arctic Ocean A. Ollive et al. https://doi.org/10.1016/j.gca.2025.12.047
- Iron Isotope Biogeochemical Cycling in the Western Arctic Ocean R. Zhang et al. https://doi.org/10.1029/2021GB006977
- Arctic – Atlantic Exchange of the Dissolved Micronutrients Iron, Manganese, Cobalt, Nickel, Copper and Zinc With a Focus on Fram Strait S. Krisch et al. https://doi.org/10.1029/2021GB007191
- Distribution of dissolved trace elements in the Laptev Sea affected by the Lena River discharge Y. Moiseeva et al. https://doi.org/10.1016/j.marpolbul.2024.116397
Saved (final revised paper)
Latest update: 11 Jun 2026
Short summary
Iron analysis of the particulate, colloidal, and truly dissolved fractions along the Lena River freshwater plume showed that the particulate iron dominates close to the coast. Over 99 % particulate and about 90 % colloidal iron were lost, while the truly dissolved phase was almost constant. Iron isotopes suggest that the shelf acts as a sink for particles and colloids with negative iron isotope values, while colloids with positive iron isotope values travel further out into the Arctic Ocean.
Iron analysis of the particulate, colloidal, and truly dissolved fractions along the Lena River...
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