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Wiberg, Karin
Publications (10 of 70) Show all publications
Cai, M., Hong, Q., Sun, J., Sundqvist, K., Wiberg, K., Chen, K., . . . Huang, S. (2016). Concentrations, distribution and sources of polychlorinated dibenzo-p-dioxins and dibenzofurans and dioxin-like polychlorinated biphenyls in coastal sediments from Xiamen, China. Paper presented at 13th International Estuarine Biogeochemistry Symposium (IEBS) on Estuaries and Bays under Anthropogenic Pressure - Past-Present-Future, JUN 07-10, 2015, Bordeaux, FRANCE. Marine Chemistry, 185, 74-81
Open this publication in new window or tab >>Concentrations, distribution and sources of polychlorinated dibenzo-p-dioxins and dibenzofurans and dioxin-like polychlorinated biphenyls in coastal sediments from Xiamen, China
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2016 (English)In: Marine Chemistry, ISSN 0304-4203, E-ISSN 1872-7581, Vol. 185, p. 74-81Article in journal (Refereed) Published
Abstract [en]

Xiamen and its surroundings are representative areas suffering from intense anthropogenic turbulence and contamination in southeast coast of China during rapid industrialization and urbanization period, thus relevant organic pollutants research is necessary to assess the coastal environmental quality and generate management strategy. Contamination status of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and dioxin like polychlorinated biphenyls (DL-PCBs) was investigated for 7 surface sediment samples collected in these areas in January 2007. The given data were used to evaluate the contamination and their potential risks of the pollutants. Concentrations of PCDD/Fs were in the range of 60 to 4089 pg g(-1) (dry weight) with an average of 1706 pg g(-1) and DL-PCBs in the range of 3 to 76 pg g(-1) with an average of 28 pg g(-1). Octa-chlorinated dibenzo-p-dioxin (OCDD) and PCBs 105 and 118 were the main congeners of the PCDD/F and DL-PCB, respectively. The toxicity equivalent concentrations (TEQs) were in the range of 0.15 to 5.2 pg g(-1) (average: 3.0 pg g(-1)) for PCDD/Fs, while in the range of <limit of quantitation (LOQ) to 0.09 pg g(-1) (average: 0.05 pg g(-1)) for DL-PCBs. Congener pattern analysis showed a dominance of OCDD, suggesting main sources were current or historical use of chlorophenol, current use of dioxin contaminated pesticides or atmospheric deposition. Due to the current levels of PCDD/Fs and DL-PCBs in this area, it is necessary to further research their biogeochemical processes and ecological influences in the future.

Keywords
PCDD/Fs, DL-PCBs, WHO-TEQ, Sediments, Xiamen, Southeast China
National Category
Environmental Sciences Oceanography, Hydrology and Water Resources
Identifiers
urn:nbn:se:umu:diva-126607 (URN)10.1016/j.marchem.2016.05.008 (DOI)000381168400008 ()
Conference
13th International Estuarine Biogeochemistry Symposium (IEBS) on Estuaries and Bays under Anthropogenic Pressure - Past-Present-Future, JUN 07-10, 2015, Bordeaux, FRANCE
Available from: 2016-11-15 Created: 2016-10-12 Last updated: 2018-06-09Bibliographically approved
Josefsson, S., Schaanning, M., Samuelsson, G. S., Gunnarsson, J. S., Olofsson, I., Eek, E. & Wiberg, K. (2012). Capping Efficiency of Various Carbonaceous and Mineral Materials for In Situ Remediation of Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Contaminated Marine Sediments: Sediment-to-Water Fluxes and Bioaccumulation in Boxcosm Tests. Environmental Science and Technology, 46(6), 3343-3351
Open this publication in new window or tab >>Capping Efficiency of Various Carbonaceous and Mineral Materials for In Situ Remediation of Polychlorinated Dibenzo-p-dioxin and Dibenzofuran Contaminated Marine Sediments: Sediment-to-Water Fluxes and Bioaccumulation in Boxcosm Tests
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2012 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 46, no 6, p. 3343-3351Article in journal (Refereed) Published
Abstract [en]

The efficiency of thin-layer capping in reducing sediment-to-water fluxes and bioaccumulation of polychlorinated dibenzo-p-dioxins and dibenzofurans, hexachlorobenzene, and octachlorostyrene was investigated in a boxcosm experiment. The influence of cap thickness (0.5-5 cm) and different cap materials was tested using a three-factor experimental design. The cap materials consisted of a passive material (coarse or fine limestone or a marine clay) and an active material (activated carbon (AC) or kraft lignin) to sequester the contaminants. The cap thickness and the type of active material were significant factors, whereas no statistically significant effects of the type of passive material were observed. Sediment-to-water fluxes and bioaccumulation by the two test species, the surface-dwelling Nassarius nitidus and the deep-burrowing Nereis spp., decreased with increased cap thickness and with addition of active material. Activated carbon was more efficient than lignin, and a ∼90% reduction of fluxes and bioaccumulation was achieved with 3 cm caps with 3.3% AC. Small increases in fluxes with increased survival of Nereis spp. indicated that bioturbation by Nereis spp. affected the fluxes.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2012
Keywords
sediment-to-water fluxes, benthic bioaccumulation, thin-layer capping, cap thickness
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-53343 (URN)10.1021/es203528v (DOI)22339559 (PubMedID)
Available from: 2012-03-22 Created: 2012-03-22 Last updated: 2018-06-08Bibliographically approved
Bergknut, M., Laudon, H., Jansson, S., Larsson, A., Gocht, T. & Wiberg, K. (2011). Atmospheric deposition, retention, and stream export of dioxins and PCBs in a pristine boreal catchment. Environmental Pollution, 159(6), 1592-1598
Open this publication in new window or tab >>Atmospheric deposition, retention, and stream export of dioxins and PCBs in a pristine boreal catchment
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2011 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 159, no 6, p. 1592-1598Article in journal (Refereed) Published
Abstract [en]

The mass-balance between diffuse atmospheric deposition of organic pollutants, amount of pollutants retained by the terrestrial environment, and levels of pollutants released to surface stream waters was studied in a pristine northern boreal catchment. This was done by comparing the input of atmospheric deposition of polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and PCBs with the amounts exported to surface waters. Two types of deposition samplers were used, equipped with a glass fibre thimble and an Amberlite sampler respectively. The measured fluxes showed clear seasonality, with most of the input and export occurring during winter and spring flood, respectively. The mass balance calculations indicates that the boreal landscape is an effective sink for PCDD/Fs and PCBs, as 96.0-99.9 % of received bulk deposition was retained, suggesting that organic pollutants will continue to impact stream water in the region for an extended period of time.

Keywords
dioxin, atmospheric deposition, diffuse pollution, retention, catchment
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-43531 (URN)10.1016/j.envpol.2011.02.050 (DOI)21440967 (PubMedID)
Available from: 2011-05-03 Created: 2011-05-03 Last updated: 2018-06-08Bibliographically approved
Josefsson, S., Leonardsson, K., Gunnarsson, J. S. & Wiberg, K. (2011). Influence of contaminant burial depth on the bioaccumulation of PCBs and PBDEs by two benthic invertebrates (Monoporeia affinis and Marenzelleria spp.). Chemosphere, 85(9), 1444-1451
Open this publication in new window or tab >>Influence of contaminant burial depth on the bioaccumulation of PCBs and PBDEs by two benthic invertebrates (Monoporeia affinis and Marenzelleria spp.)
2011 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 85, no 9, p. 1444-1451Article in journal (Refereed) Published
Abstract [en]

The bioaccumulation of buried polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) added to specific depths in sediment (2.0-2.5, 5.0-5.5 and 10.0-10.5cm) was studied in two infaunal species with similar feeding habits (surface deposit-feeders) but different bioturbation modes. The deep-burrowing polychaetes Marenzelleria spp. (Mz) displayed up to 36 times higher tissue concentrations of buried (spiked) contaminants than the surface-dwelling biodiffusing amphipod Monoporeia affinis. The differences in bioaccumulation were most pronounced for less hydrophobic contaminants due to the bioirrigating activity of Mz. Contaminants buried at shallow depths displayed higher accumulation than more deeply buried contaminants. In contrast, the bioaccumulation of unspiked (native) contaminants with a uniform vertical distribution in the sediment was similar between the species. For Mz, the BSAFs increased with increased K(OW) for the uniformly distributed contaminants, but decreased for the buried contaminants, which indicates that the dominant uptake routes of the buried contaminants can differ from the uniformly distributed contaminants. The surface sediment concentration of buried contaminants increased in Mz treatments, showing that Mz bioturbation can remobilize historically buried contaminants to the biologically active surface layer and increase the exposure for surface-dwelling species.

Place, publisher, year, edition, pages
Elsevier, 2011
Keywords
Bioturbation, BSAFs, sediment pollution, Baltic Sea, invasive species
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-47526 (URN)10.1016/j.chemosphere.2011.08.024 (DOI)21924758 (PubMedID)
Available from: 2011-09-22 Created: 2011-09-22 Last updated: 2018-06-08Bibliographically approved
Josefsson, S., Karlsson, O. M., Malmaeus, J. M., Cornelissen, G. & Wiberg, K. (2011). Structure-related distribution of PCDD/Fs, PCBs and HCB in a river-sea system. Chemosphere, 83(2), 85-94
Open this publication in new window or tab >>Structure-related distribution of PCDD/Fs, PCBs and HCB in a river-sea system
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2011 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 83, no 2, p. 85-94Article in journal (Refereed) Published
Abstract [en]

Water concentrations of PCDD/Fs, HCB, and non-ortho, mono-ortho, and non-dioxin-like PCBs were measured four times during 1year in a coastal area of the Baltic Sea, to investigate background levels and distribution behaviour. Sampling sites included two rivers, an estuary, and the sea. Particulate and apparently dissolved concentrations were determined using active sampling (filters+PUFs), while freely dissolved concentrations were determined using passive sampling (POM-samplers). The distribution between particulate+colloidal and freely dissolved phases, in the form of TOC-normalized distribution ratios (K(TOC)), was found to be near or at equilibrium. The observed K(TOC) were not significantly different between sampling sites or seasons. For PCDD/Fs, the concentrations were significantly correlated to suspended particulate matter (SPM), while no correlation to organic carbon (TOC) was observed. In the estuary and the sea, PCB concentrations were correlated to TOC. The sorption of various congeners to SPM and TOC appeared to be related to both hydrophobicity and 3D-structure. The PCDD/F concentration in the sea decreased to one third in May, likely connected to the increased vertical flux of particles during the spring bloom.

Place, publisher, year, edition, pages
Elsevier Ltd, 2011
Keywords
Organic carbon, Particulate matter, HOC, Spring bloom, Baltic Sea
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-39986 (URN)10.1016/j.chemosphere.2011.01.019 (DOI)21296376 (PubMedID)
Available from: 2011-03-03 Created: 2011-02-14 Last updated: 2018-06-08Bibliographically approved
Bergknut, M., Wiberg, K. & Klaminder, J. (2011). Vertical and lateral redistribution of POPs in soils developed along a hydrological gradient. Environmental Science and Technology, 45(24), 10378-10384
Open this publication in new window or tab >>Vertical and lateral redistribution of POPs in soils developed along a hydrological gradient
2011 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 45, no 24, p. 10378-10384Article in journal (Refereed) Published
Abstract [en]

Study of the dispersion of persistent organic pollutants (POPs) throughout the environment is necessitated by their toxicological properties and propensity to accumulate in biota. In this study, we use data from the analysis of three (210)Pb dated soil profiles collected along a 30-m hydrological gradient to demonstrate postdepositional mobility of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs). We found that (i) humus originating from litter exposed to surface fallout during the 1960-1970s contains the highest concentrations of PCDD/Fs and PCBs in the O-horizon of the soils; (ii) accumulation rates of PCDD/Fs and PCBs in the O-horizon (similar to 5.0 and similar to 210 mu g m(-2) yr(-1)) constituted only 9.1% and 3.5%, respectively, of the measured annual input, demonstrating that a minor fraction of the deposited material is retained within the O-horizon; (iii) POP inventories in the upper 0.5-0.9 m of the mineral soil constituted a considerable part (40-70%) of the total pool stored in the soil, implying significant vertical translocation of atmospheric derived POPs; and (iv) increasing downslope inventories of POPs suggest a lateral downward transport of POPs from uphill soils. The findings challenge the commonly accepted view that POPs fallout is effectively retained within O-horizons.

Keywords
persistent organic pollutants; dibenzo-p-dioxins; boreal forest; spatial-distribution; emission inventory; time trends; pcbs; contaminants; lead; environment
National Category
Environmental Sciences Ecology
Identifiers
urn:nbn:se:umu:diva-51469 (URN)10.1021/es200938z (DOI)000298118300018 ()
Available from: 2012-01-24 Created: 2012-01-23 Last updated: 2018-06-08Bibliographically approved
Wiberg, K., MacLeod, M. & Åberg, A. (2010). Application of a human exposure model in a PCDD/F contaminated site case study: evaluation of model performance and associated uncertainties. Paper presented at Dioxin 2010 - International Symposium on Halogenated Persistent Organic Pollutants (POPs), San Antonio, Texas, USA, 2010. Vienna: Federal Environmental Agency, 72
Open this publication in new window or tab >>Application of a human exposure model in a PCDD/F contaminated site case study: evaluation of model performance and associated uncertainties
2010 (English)Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Vienna: Federal Environmental Agency, 2010
Series
Organohalogen compounds, ISSN 1026-4892 ; Vol. 72
National Category
Chemical Sciences
Identifiers
urn:nbn:se:umu:diva-45275 (URN)
Conference
Dioxin 2010 - International Symposium on Halogenated Persistent Organic Pollutants (POPs), San Antonio, Texas, USA, 2010
Note
Short papers from Dioxin 2010 - International Symposium on Halogenated Persistent Organic Pollutants (POPs), San Antonio, Texas, USA, 2010Available from: 2011-06-30 Created: 2011-06-30 Last updated: 2018-06-08Bibliographically approved
Karlsson, O. M., Malmaeus, J. M., Josefsson, S., Wiberg, K. & Håkanson, L. (2010). Application of a mass-balance model to predict PCDD/F turnover in a Baltic coastal estuary. Estuarine, Coastal and Shelf Science, 88(2), 209-18
Open this publication in new window or tab >>Application of a mass-balance model to predict PCDD/F turnover in a Baltic coastal estuary
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2010 (English)In: Estuarine, Coastal and Shelf Science, ISSN 0272-7714, E-ISSN 1096-0015, Vol. 88, no 2, p. 209-18Article in journal (Refereed) Published
Abstract [en]

A dynamical, process-based mass-balance model was applied to quantify the transports of polychlorinated-p-dibenzodioxins and dibenzofurans (PCDD/Fs) to, within and from the Kallrigafjärden Bay, a coastal estuary in the Baltic Sea, and to predict the PCDD/F levels in the water and sediments of the bay. Before the modelling, a one-year sampling programme was implemented in 2007–2008 to measure the flows of PCDD/Fs in tributaries entering the system, the fluxes from the adjacent sea and the levels in water, sediment and fish within the estuary. The collected data set was used as input data to the model and for validation purposes.The model was originally developed and tested for suspended particulate matter and phosphorus in Baltic coastal areas. In this work, it was run monthly without any tuning of the original model variables. The simulation results compared favourably with the field measurements of levels of 15 PCDD/F congeners in the water and sediments of the bay. The dominating fluxes of PCDD/Fs were the exchange with the adjacent sea, followed by riverine input, atmospheric deposition and sediment burial.Although the sediment-water exchange was of minor importance for the overall mass-balance due to the rapid water turnover and limited areas favourable for the long-term deposition of fine sedimentary matter, sensitivity analyses indicated that the model’s predictive capability was improved with about 5% by taking the sediment burial and release into account.

Place, publisher, year, edition, pages
Elsevier Ltd, 2010
Keywords
PCDD/F, dioxin, mass-balance, model, resuspension, sedimentation, Baltic Sea
Identifiers
urn:nbn:se:umu:diva-38321 (URN)10.1016/j.ecss.2010.04.001 (DOI)000279089400005 ()
Available from: 2010-12-06 Created: 2010-12-06 Last updated: 2018-06-08Bibliographically approved
Josefsson, S., Leonardsson, K., Gunnarsson, J. S. & Wiberg, K. (2010). Bioturbation-driven release of buried PCBs and PBDEs from different depths in contaminated sediments. Environmental Science and Technology, 44(19), 7456-64
Open this publication in new window or tab >>Bioturbation-driven release of buried PCBs and PBDEs from different depths in contaminated sediments
2010 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 44, no 19, p. 7456-64Article in journal (Refereed) Published
Abstract [en]

Bioturbation can remobilize previously buried contaminants, leading to an increased exposure of aquatic biota. The remobilization of buried polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) from three different sediment depth layers (2.0-2.5 cm, 5.0-5.5 cm, and 10.0-10.5 cm) was studied in a laboratory experiment with two benthic macrofauna species, the amphipod Monoporeia affinis and the polychaete Marenzelleria spp. Remobilization of PCBs and PBDEs was significantly higher in the presence of Marenzelleria spp. than in M. affinis treatments and controls (without macrofauna). The highest remobilization occurred from the most shallow layers (2.0-2.5 cm > 5.0-5.5 cm > 10.0-10.5 cm), but contaminants were remobilized due to bioturbation from layers down to at least 10 cm. Congeners with lower hydrophobicity were remobilized to a higher extent than more hydrophobic congeners. The contaminant distribution between the particulate and the dissolved phase in the water column depended on hydrophobicity and burial depth of the contaminant, with congeners from deeper layers displaying an increased distribution to the particulate phase. Release fluxes and sediment-to-water mass transfer coefficients (MTCs) show that bioturbation by the polychaete Marenzelleria spp. can lead to a significant remobilization of buried contaminants from Baltic Sea sediments.

Place, publisher, year, edition, pages
American Chemical Society, 2010
Keywords
Marenzelleria-Viridis Polychaeta, Water Partition-Coefficients, Baltic Sea Sediments, Monoporeia-Affinis, Marine-Sediments, Organic-Matter, Polychlorinated Biphenyl, Congener Distributions
Identifiers
urn:nbn:se:umu:diva-37433 (URN)10.1021/es100615g (DOI)000282209700046 ()20831254 (PubMedID)
Available from: 2010-11-03 Created: 2010-11-03 Last updated: 2018-06-08Bibliographically approved
Bergknut, M., Laudon, H. & Wiberg, K. (2010). Dioxins, PCBs, and HCB in soil and peat profiles from a pristine boreal catchment. Environmental Pollution, 158(7), 2518-2525
Open this publication in new window or tab >>Dioxins, PCBs, and HCB in soil and peat profiles from a pristine boreal catchment
2010 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 158, no 7, p. 2518-2525Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to explore how atmospherically derived soil pollution is affected by environmental processes at two typical boreal catchment landscape type settings: wetlands and forested areas. Measurements of hydrophobic organic compounds (HOCs) in forest soil and peat from an oligotrophic mire at various depths were performed at a remote boreal catchment in northern Sweden. HOCs in peat were evenly distributed throughout the body of the mire while levels of HOCs in the forest soil increased with increased amount of organic matter. Evaluation of HOC composition by principal component analysis (PCA) showed distinct differences between surface soils and deeper soil and peat samples. This was attributed to vertical transport, degradation and/or shifting sources over time. The calculated net vertical transport differed between surface layers (0.3%) and deeper soils (8.0%), suggesting that vertical transport conditions and processes differ in the deeper layers compared to the surface layers.

Keywords
Dioxin, PCDD/F, PCB, HOCs, Diffuse pollution, Boreal catchment
Identifiers
urn:nbn:se:umu:diva-35286 (URN)10.1016/j.envpol.2010.03.009 (DOI)000279063600024 ()20434247 (PubMedID)
Available from: 2010-08-11 Created: 2010-08-11 Last updated: 2018-06-08Bibliographically approved
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