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  • 1.
    Apler, Anna
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Contaminated organic sediments of anthropogenic origin: impact on coastal environments2021Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    The Baltic Sea is negatively affected by legacy pollutants such as metals and persistent organic pollutants (POPs) that are known to have adverse effects on living organisms, including, humans and were banned decades ago. This thesis addresses the dispersal of these pollutants from heavily contaminated, cellulose-rich sediments of industrial origin in the Ångermanälven river estuary in northern Sweden. Relatively thick deposits, known as fiberbanks, in the studied area derive from historical wastewater emissions from the pulp and paper industry (P&PI) that began in the 19th century. These fiberbanks formed on shallow seabeds, where they currently remain. In addition, extensive areas of the deeper seabed are covered by fiber-rich sediments. The fiberbanks contain higher levels of pollutants than the fiber-rich sediments and the sediments less affected by P&PI emissions, and the fiberbank concentrations may be of ecotoxicological concern. Metals and POPs were found to be strongly partitioned to organic material and partitioning coefficients were higher in fiberbanks that contain elevated levels of organic matter. Metals and POPs were detectable in sampled pore water, even if low sediment-water fluxes of metals were expected. Metal contaminant concentrations in sampled bottom water were measured before and after resuspension of underlying sediments, which showed that concentrations of particle bound metals dominated over dissolved forms. One out of three studied fiberbank sites was covered with a natural capping layer that probably shields the water column from metals in the deposit underneath. Studies of geological archives in the form of sediment cores show the rise and fall of an anthropogenic industrial era and the recovery of an aquatic system, but the established chemostratigraphy fails to reveal the current hotspots (fiberbanks) that will stay for decades to come. The potential impacts of climate change and isostatic land uplift are factors that complicate the long-term risk assessment of fiberbanks. These knowledge gaps combined with the lack of a common risk assessment strategy for contaminated sediments hinder the achievement of national quality objectives (NQOs) and fulfillment of Agenda 2030 goals. Fiberbanks resulted from an accelerating global demand for paper products and hence, the issue of these artificial seabed forms is an example of how the geological epoch of humankind, the Anthropocene, can be viewed in a cross-scalar perspective and be important in the management of a sustainable future in the Baltic Sea region.

    Delarbeid
    1. Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin
    Åpne denne publikasjonen i ny fane eller vindu >>Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin
    2019 (engelsk)Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 215, s. 470-481Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Industrial emissions can impact aquatic environments and unregulated discharges from pulp and paper factories have resulted in deposits of cellulose fiber along the Swedish coast. These deposits are contaminated by metals, but due to their unique fibrous character the extent of sorption and dispersal of the metals is unclear. Fibrous sediments were sampled at two sites in the Ångermanälven river estuary, Sweden. The partitioning of metals between the sediment, pore water and bottom water was investigated and the degree of bioavailability was evaluated. The levels of metals in the sediment were high in fibrous or offshore samples, depending on the metal, whereas the levels of dissolved metals in pore water were low or below the limit of quantification. Partition coefficients (KD) showed that sorption to the sediment was stronger at one of the fibrous sites, possibly related to the type and size of organic matter. Undisturbed bottom water samples contained low levels of both dissolved and particle bound metals, but when comparing measured metal concentrations to threshold values of ecological status and ecotoxicological assessment criteria, both sediments and bottom water may be detrimental to living organisms. In-situ re-suspension experiments showed that the concentrations of particle bound metals increased whereas the dissolved concentrations decreased. The analyzed metals are probably retained by the solid phases of the fibrous sediment or adsorbed to particles in the water, reducing their bioavailability.

    Emneord
    fiberbank, fiber-rich sediments, metals, bottom water, pore water, sorption
    HSV kategori
    Forskningsprogram
    Geovetenskap med inriktning mot miljöanalys
    Identifikatorer
    urn:nbn:se:uu:diva-363220 (URN)10.1016/j.chemosphere.2018.10.010 (DOI)000450383400052 ()30340155 (PubMedID)
    Forskningsfinansiär
    Swedish Research Council Formas, 214-2014-63The Geological Survey of Sweden (SGU), 362-1493/2013The Geological Survey of Sweden (SGU), 411-1578/2013
    Tilgjengelig fra: 2018-10-15 Laget: 2018-10-15 Sist oppdatert: 2020-12-10bibliografisk kontrollert
    2. Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea
    Åpne denne publikasjonen i ny fane eller vindu >>Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea
    Vise andre…
    2020 (engelsk)Inngår i: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 20, nr 5, s. 2471-2483Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Many coastal areas in the Baltic Sea are contaminated with wood fiber and pollutants from pulp and paper industries. These anthropogenic, organic-rich, sediments (fiberbanks) have not been characterized and knowledge about their role as secondary sources for dispersal of persistent organic pollutants (POPs) is limited. Hence, the aim of this study was to elucidate the fate of POPs and the relationships between sorption (KD and KTOC), sediment type, and compound hydrophobicity (KOW) in fiber-contaminated sediments.

    Emneord
    Chlorinated pollutants, Fibrous sediment, Organic carbon, Pore water, Pulp and paper emissions
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-419473 (URN)10.1007/s11368-020-02610-6 (DOI)
    Tilgjengelig fra: 2020-09-11 Laget: 2020-09-11 Sist oppdatert: 2020-12-10bibliografisk kontrollert
    3. Dispersal of cellulose fibers and metals from contaminated sediments of industrial origin in an estuary
    Åpne denne publikasjonen i ny fane eller vindu >>Dispersal of cellulose fibers and metals from contaminated sediments of industrial origin in an estuary
    2020 (engelsk)Inngår i: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 266, nr 3, artikkel-id 115182Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    The boreal forest’s pulp and paper industry plays a major role in economic prosperity but, historically, caused an environmental burden. Remnants of discharges of contaminated suspended solids (fiberbanks) are continuously being discovered on the beds of shallow seas, rivers and lakes in the northern hemisphere. We investigated the dispersion of Cd, Cr, Cu, Hg, Ni, Pb and Zn from deeper to surficial layers in fiberbanks in a Swedish estuary and the larger-scale transport of the same metals to distal areas of sediment accumulation. We also tested the C:N ratio as a common denominator for these anthropogenic, cellulose-rich deposits. Sampling and analyses of three fiberbanks located in the inner part of the estuary and from sediment accumulation sites outside and along the estuary reveals that metal concentrations are regressing to background levels towards the surface at the accumulation sites. The fiberbanks show a higher degree of contamination and C:N ratios demonstrate inclusion of cellulose fibers. C:N ratios also indicate that there is currently no significant transport of fiberbank material into the distal areas. A ∼10 cm natural cap of recently settled fine-grained sediment covering one of the fiberbanks seems to prevent metals dispersing into overlying water whereas the other two fiberbanks show signs of metal enrichment and potential mercury methylation in surficial layers. Although the estuarine system seems to recover from the impact of industrial waste, there is no evidence that the fiberbanks will be remediated naturally but instead will continue to threaten the aquatic environment.

    Emneord
    Fiberbank, Fiber-impacted sediments, Metals, C:N ratios, Anthropogenic sediments
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-419474 (URN)10.1016/j.envpol.2020.115182 (DOI)000571853900011 ()32673976 (PubMedID)
    Forskningsfinansiär
    The Geological Survey of Sweden (SGU), 362-1493/2013
    Tilgjengelig fra: 2020-10-06 Laget: 2020-10-06 Sist oppdatert: 2020-12-10bibliografisk kontrollert
    4. The Anthropocene in the northern Baltic Sea – the case of contaminated fiberbanks and implications for sustainable development
    Åpne denne publikasjonen i ny fane eller vindu >>The Anthropocene in the northern Baltic Sea – the case of contaminated fiberbanks and implications for sustainable development
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    The epoch of humankind, the Anthropocene, is usually characterized by the global gaze, which places its focus on global environmental phenomena i.e. global warming and ocean acidification. In this article we argue that the Anthropocene could be better understood with a cross-scalar perspective and present the case of anthropogenic contaminated “fiberbanks” as an example. We present a geological example of the Anthropocene in a Swedish river estuary in the northern Baltic Sea, which hosted nine P&P mills along its’ shores and received large amounts of metal containing wastewater during the 20th century. As a result of the great acceleration and an increased national and global demand for pulp and paper products these fiberbanks formed in shallow waters. As artificial seabed features these thick deposits of contaminated organic-rich material negatively affect the adjacent aquatic environment. By constructing a chemostratigraphy based on sediment cores from accumulation areas and a metal pollution index we show how the aquatic system has recovered from metal pollution. We note, however, that the established stratigraphy fails to identify the fiberbanks, which remain in the shallow zones and are contaminant hotspots. In Sweden, there is an insufficient knowledge of contaminated sediments for a sustainable water and marine management. This knowledge gap in combination with human induced climate changes that may chemically and physically affect sediments and thus, alter dispersion of imbedded pollutants, results in poor understanding and long-term perception of the risks of contaminant dispersion from fiberbanks. We claim that these gaps of knowledge must be filled in order to reach an effective conservation at the same time as a sustainable blue growth in the northern Baltic Sea.

    Emneord
    Anthropocene, fiberbanks, pulp and paper industry, chemostratigraphy, water and marine management, sustainable development
    HSV kategori
    Forskningsprogram
    Naturresurser och hållbar utveckling
    Identifikatorer
    urn:nbn:se:uu:diva-427736 (URN)
    Tilgjengelig fra: 2020-12-10 Laget: 2020-12-10 Sist oppdatert: 2020-12-10
    Fulltekst (pdf)
    fulltext
    Download (jpg)
    presentationsbild
  • 2.
    Apler, Anna
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Dispersal and environmental impact of contaminants in organic rich, fibrous sediments of industrial origin in the Baltic Sea2018Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    The health of the Baltic Sea is negatively affected by hazardous substances such as metals and persistent organic pollutants (POPs), which include legacy pollutants that were banned decades ago, but still circulate in the ecosystem. Elevated levels of legacy pollutants, identified by HELCOM as key hazardous substances, have been found in accumulations of fibrous sediments, so-called fiberbanks and fiber-rich sediments, which derive from old pulp mills along the Swedish north coast. The fiberbanks are deposited in shallow water and bathymetrical models show evidence of their erosion, potentially caused by propeller wash, submarine landslides and gas ebullition. This thesis addresses the potential dispersal of key substances from three fiberbank sites located in a non-tidal Swedish estuary, in which metals and POPs are present in concentrations that may pose a risk for benthic organisms. Metals and POPs are partitioned to organic material and, as expected, show the highest partitioning coefficients (KD) in fiberbanks that have higher TOC levels compared to adjacent areas with fiber-rich sediments (natural clay sediments mixed up with fibers) or relatively unaffected postglacial clays. However, many analytes were found to be present in quantifiable concentrations in pore water, which indicates diffusion of substances from the solid phase to the aqueous phase. To assess the dispersive influence of an abrupt erosional event on dispersion, metals were measured in undisturbed bottom water and in bottom water disturbed by artificial re-suspension of fibrous sediments. The bioavailable, dissolved fraction of metals decreased in bottom water after re-suspension, probably due to the particle concentration effect. In contrast, the total concentrations of metals and number of quantifiable metals increased with particle concentration caused by re-suspension. At one station, the total concentration of chromium (Cr) was elevated to a level where it may lower the ecological status of the water body during periods of substantial erosion (e.g. spring floods or submarine landslides). Analyses of disturbed bottom water revealed, however, that minerogenic particles were preferentially re-suspended compared to organic. This suggests that physical erosion and re-suspension of fiberbank sediments might have a larger effect on dispersal of metals than on POPs.

    Delarbeid
    1. Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin
    Åpne denne publikasjonen i ny fane eller vindu >>Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin
    (engelsk)Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298Artikkel i tidsskrift (Fagfellevurdert) Submitted
    Emneord
    Fiberbank, fiber-rich sediments, metals, bottom water, pore water, dispersal, sorption
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-349805 (URN)
    Prosjekter
    TREASURE
    Forskningsfinansiär
    Swedish Research Council Formas, 214-2014-63The Geological Survey of Sweden (SGU), 362-1493/2013The Geological Survey of Sweden (SGU), 411-1578/2013
    Tilgjengelig fra: 2018-05-02 Laget: 2018-05-02 Sist oppdatert: 2018-05-02
    2. Persistent organic pollutants in wood fiber contaminated sediments from the Baltic Sea
    Åpne denne publikasjonen i ny fane eller vindu >>Persistent organic pollutants in wood fiber contaminated sediments from the Baltic Sea
    Vise andre…
    (engelsk)Inngår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851Artikkel i tidsskrift (Fagfellevurdert) Submitted
    Emneord
    Chlorinated pollutants, organic carbon, fibrous sediment, pore water, pulp and paper emissions.
    HSV kategori
    Identifikatorer
    urn:nbn:se:uu:diva-349824 (URN)
    Forskningsfinansiär
    Swedish Research Council Formas, 214-2014-63
    Tilgjengelig fra: 2018-05-02 Laget: 2018-05-02 Sist oppdatert: 2018-05-02
    Fulltekst (pdf)
    fulltext
    Download (jpg)
    presentationsbild
  • 3.
    Apler, Anna
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Kuchler, Magdalena
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Zillén, Lovisa
    Division of Marine Environment, Geological Survey of Sweden (SGU).
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    The Anthropocene in the northern Baltic Sea – the case of contaminated fiberbanks and implications for sustainable developmentManuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    The epoch of humankind, the Anthropocene, is usually characterized by the global gaze, which places its focus on global environmental phenomena i.e. global warming and ocean acidification. In this article we argue that the Anthropocene could be better understood with a cross-scalar perspective and present the case of anthropogenic contaminated “fiberbanks” as an example. We present a geological example of the Anthropocene in a Swedish river estuary in the northern Baltic Sea, which hosted nine P&P mills along its’ shores and received large amounts of metal containing wastewater during the 20th century. As a result of the great acceleration and an increased national and global demand for pulp and paper products these fiberbanks formed in shallow waters. As artificial seabed features these thick deposits of contaminated organic-rich material negatively affect the adjacent aquatic environment. By constructing a chemostratigraphy based on sediment cores from accumulation areas and a metal pollution index we show how the aquatic system has recovered from metal pollution. We note, however, that the established stratigraphy fails to identify the fiberbanks, which remain in the shallow zones and are contaminant hotspots. In Sweden, there is an insufficient knowledge of contaminated sediments for a sustainable water and marine management. This knowledge gap in combination with human induced climate changes that may chemically and physically affect sediments and thus, alter dispersion of imbedded pollutants, results in poor understanding and long-term perception of the risks of contaminant dispersion from fiberbanks. We claim that these gaps of knowledge must be filled in order to reach an effective conservation at the same time as a sustainable blue growth in the northern Baltic Sea.

  • 4.
    Apler, Anna
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Frogner-Kockum, Paul
    Swedish Geotechnical Institute (SGI).
    Josefsson, Sarah
    Geological Survey of Sweden (SGU).
    Distribution and dispersal of metals in contaminated fibrous sediments of industrial originInngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298Artikkel i tidsskrift (Fagfellevurdert)
  • 5.
    Apler, Anna
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Frogner-Kockum, Paul
    Swedish Geotechnical Institute (SGI).
    Josefsson, Sarah
    Division of Physical Planning and Marine Environment, Geological Survey of Sweden (SGU).
    Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin2019Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 215, s. 470-481Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Industrial emissions can impact aquatic environments and unregulated discharges from pulp and paper factories have resulted in deposits of cellulose fiber along the Swedish coast. These deposits are contaminated by metals, but due to their unique fibrous character the extent of sorption and dispersal of the metals is unclear. Fibrous sediments were sampled at two sites in the Ångermanälven river estuary, Sweden. The partitioning of metals between the sediment, pore water and bottom water was investigated and the degree of bioavailability was evaluated. The levels of metals in the sediment were high in fibrous or offshore samples, depending on the metal, whereas the levels of dissolved metals in pore water were low or below the limit of quantification. Partition coefficients (KD) showed that sorption to the sediment was stronger at one of the fibrous sites, possibly related to the type and size of organic matter. Undisturbed bottom water samples contained low levels of both dissolved and particle bound metals, but when comparing measured metal concentrations to threshold values of ecological status and ecotoxicological assessment criteria, both sediments and bottom water may be detrimental to living organisms. In-situ re-suspension experiments showed that the concentrations of particle bound metals increased whereas the dissolved concentrations decreased. The analyzed metals are probably retained by the solid phases of the fibrous sediment or adsorbed to particles in the water, reducing their bioavailability.

    Fulltekst (pdf)
    fulltext
  • 6.
    Apler, Anna
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Frogner-Kockum, Paul
    Swedish Geotechnical Institute.
    Josefsson, Sarah
    Geological Survey of Sweden.
    Distribution and dispersal of metals in contaminated fibrous sediments of industrial origin2019Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 215, s. 470-481Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Industrial emissions can impact aquatic environments and unregulated discharges from pulp and paper factories have resulted in deposits of cellulose fiber along the Swedish coast. These deposits are contaminated by metals, but due to their unique fibrous character the extent of sorption and dispersal of the metals is unclear. Fibrous sediments were sampled at two sites in the Ångermanälven river estuary, Sweden. The partitioning of metals between the sediment, pore water and bottom water was investigated and the degree of bioavailability was evaluated. The levels of metals in the sediment were high in fibrous or offshore samples, depending on the metal, whereas the levels of dissolved metals in pore water were low or below the limit of quantification. Partition coefficients (KD) showed that sorption to the sediment was stronger at one of the fibrous sites, possibly related to the type and size of organic matter. Undisturbed bottom water samples contained low levels of both dissolved and particle bound metals, but when comparing measured metal concentrations to threshold values of ecological status and ecotoxicological assessment criteria, both sediments and bottom water may be detrimental to living organisms. In-situ re-suspension experiments showed that the concentrations of particle bound metals increased whereas the dissolved concentrations decreased. The analyzed metals are probably retained by the solid phases of the fibrous sediment or adsorbed to particles in the water, reducing their bioavailability.

    Fulltekst (pdf)
    fulltext
  • 7.
    Apler, Anna
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Josefsson, Sarah
    Division of Physical Planning and Marine Environment, Geological Survey of Sweden (SGU).
    Dispersal of cellulose fibers and metals from contaminated sediments of industrial origin in an estuary2020Inngår i: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 266, nr 3, artikkel-id 115182Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The boreal forest’s pulp and paper industry plays a major role in economic prosperity but, historically, caused an environmental burden. Remnants of discharges of contaminated suspended solids (fiberbanks) are continuously being discovered on the beds of shallow seas, rivers and lakes in the northern hemisphere. We investigated the dispersion of Cd, Cr, Cu, Hg, Ni, Pb and Zn from deeper to surficial layers in fiberbanks in a Swedish estuary and the larger-scale transport of the same metals to distal areas of sediment accumulation. We also tested the C:N ratio as a common denominator for these anthropogenic, cellulose-rich deposits. Sampling and analyses of three fiberbanks located in the inner part of the estuary and from sediment accumulation sites outside and along the estuary reveals that metal concentrations are regressing to background levels towards the surface at the accumulation sites. The fiberbanks show a higher degree of contamination and C:N ratios demonstrate inclusion of cellulose fibers. C:N ratios also indicate that there is currently no significant transport of fiberbank material into the distal areas. A ∼10 cm natural cap of recently settled fine-grained sediment covering one of the fiberbanks seems to prevent metals dispersing into overlying water whereas the other two fiberbanks show signs of metal enrichment and potential mercury methylation in surficial layers. Although the estuarine system seems to recover from the impact of industrial waste, there is no evidence that the fiberbanks will be remediated naturally but instead will continue to threaten the aquatic environment.

  • 8.
    Dahlberg, Anna-Karin
    et al.
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU).
    Apler, Anna
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden.
    Vogel, Lisa
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU).
    Wiberg, Karin
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU).
    Josefsson, Sarah
    Geological Survey of Sweden (SGU).
    Persistent organic pollutants in wood fiber contaminated sediments from the Baltic SeaInngår i: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851Artikkel i tidsskrift (Fagfellevurdert)
  • 9.
    Dahlberg, Anna-Karin
    et al.
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU).
    Apler, Anna
    Geological Survey of Sweden (SGU).
    Vogel, Lisa
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU).
    Wiberg, Karin
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU).
    Josefsson, Sarah
    Division of Physical Planning and Marine Environment, Geological Survey of Sweden (SGU).
    Persistent organic pollutants in wood fiber–contaminated sediments from the Baltic Sea2020Inngår i: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 20, nr 5, s. 2471-2483Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Many coastal areas in the Baltic Sea are contaminated with wood fiber and pollutants from pulp and paper industries. These anthropogenic, organic-rich, sediments (fiberbanks) have not been characterized and knowledge about their role as secondary sources for dispersal of persistent organic pollutants (POPs) is limited. Hence, the aim of this study was to elucidate the fate of POPs and the relationships between sorption (KD and KTOC), sediment type, and compound hydrophobicity (KOW) in fiber-contaminated sediments.

    Fulltekst (pdf)
    fulltext
  • 10.
    Frogner-Kockum, Paul
    et al.
    Swedish Geotechnical Institute, SE-211 22 Malmö, Sweden.
    Kononets, Mikhail
    Department of Marine Sciences, University of Gothenburg, Box 461, SE-405 30 Gothenburg, Sweden.
    Apler, Anna
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling. Geological Survey of Sweden, Department of marine environment & planning, Box 670, SE-751 28 Uppsala, Sweden.
    Hall, Per O.J.
    Department of Marine Sciences, University of Gothenburg, Box 461, SE-405 30 Gothenburg, Sweden.
    Snowball, Ian
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Geovetenskapliga sektionen, Institutionen för geovetenskaper, Naturresurser och hållbar utveckling.
    Less metal fluxes than expected from fibrous marine sediments2020Inngår i: Marine Pollution Bulletin, ISSN 0025-326X, E-ISSN 1879-3363, Vol. 150, artikkel-id 110750Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Deposits of fibrous sediment, which include fiberbanks and fiber-rich sediments, are known to exist on the Swedish seafloor adjacent to coastally located former pulp and paper industries. These deposits contain concentrations of hazardous substances that exceed national background levels and contravene national environmental quality objectives (EQOs). In this study of metal fluxes from fibrous sediments using benthic flux chamber measurements (BFC) in situ we obtained detected fluxes of Co, Mo, Ni and Zn, but no fluxes of Pb, Hg and Cr. The absence of fluxes of some of the analyzed metals indicates particle bound transport of Pb, Cr and Hg from fiberbanks even though Hg might become methylated under anoxic conditions and, in that case, may enter the food chain. We found less metal fluxes than expected and thus emphasize the importance of in-situ flux measurements as a compliment to sediment metal concentrations within risk assessments of contaminated sediments.

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