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Düker, Anders
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Publications (10 of 21) Show all publications
Temnerud, J., Düker, A., Karlsson, S., Allard, B., Bishop, K., Föster, S. & Köhler, S. (2013). Spatial patterns of some trace elements in four Swedish stream networks. Biogeosciences, 10(3), 1407-1423
Open this publication in new window or tab >>Spatial patterns of some trace elements in four Swedish stream networks
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2013 (English)In: Biogeosciences, ISSN 1726-4170, E-ISSN 1726-4189, Vol. 10, no 3, p. 1407-1423Article in journal (Refereed) Published
Abstract [en]

Four river basins in southern Sweden, with catchment sizes from 0.3 to 127 km2 (median 1.9), were sampled in October∼2007. The 243 samples were analysed for 26 trace elements (Ag, As, Au, Ba, Be, Bi, Cd, Co, Cr, Cu, Ga, Ge, In, La, Li, Mo, Ni, Pb, Sb, Se, Sn, Tl, Ti, U, V and Zn) to identify spatial patterns within drainage networks. The range and median of each element were defined for different stream orders, and relationships to catchment characteristics, including deposition history, were explored. The sampling design made it possible to compare the differences along 40 stream reaches, above and below 53 stream junctions with 107 tributaries and between the 77 inlets and outlets of 36 lakes. The largest concentration differences (at reaches, junctions and lakes) were observed for lakes, with outlets usually having lower concentration compared to the inlets for As, Ba, Be, Bi, Cd, Co, Cr, Ga, Ge, Ni, Pb, Sn, Ti, Tl, U, V and Zn. Significantly lower concentrations were observed for Cd and Co when comparing headwaters with downstream sites in each catchment. Common factor analysis (FA) revealed that As, Bi, Cr, Ga, Ge, Tl and V co-vary positively with Al, Fe and total organic carbon (TOC) and negatively with La, Li and pH. The strong removal of a large number of trace elements when passing through lakes is evident though in the FA, where lake surface coverage plots opposite to many of those elements. Forest volume does not respond in a similar systematic fashion and, surprisingly, the amount of wetland does not relate strongly to either Fe or TOC at any of the rivers. A better understanding of the quantitative removal of organic carbon and iron will aid in understanding trace element fluxes from landscapes rich in organic matter and iron.

Place, publisher, year, edition, pages
Copernicus Publications under license by EGU – European Geosciences Union GmbH, 2013
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-41983 (URN)10.5194/bg-10-1407-2013 (DOI)000317010600013 ()2-s2.0-84874613070 (Scopus ID)
Note

Funding Agencies:

Swedish University of Agricultural Sciences

Swedish Environmental Protection Agency

Knowledge Foundation

Swedish Meteorological and Hydrological Institute

Available from: 2015-01-16 Created: 2015-01-16 Last updated: 2019-06-14Bibliographically approved
Elgh-Dalgren, K., Düker, A., Arwidsson, Z., von Kronhelm, T. & van Hees, P. A. W. (2011). Re-cycling of remediated soil: evaluation of leaching tests as tools for characterization. Waste Management, 31(2), 215-224
Open this publication in new window or tab >>Re-cycling of remediated soil: evaluation of leaching tests as tools for characterization
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2011 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 31, no 2, p. 215-224Article in journal (Refereed) Published
Abstract [en]

In Sweden, leaching tests with deionized water (D.W.) are frequently utilized in risk assessment, but implementation of these results to evaluate the risk of spreading in the environment is difficult. One problem is that most leaching procedures only consider heavy metals release, whereas organic pollutants are left out. The aim of the present study was to assess the possible pollutant miti­gation in four remediated soils, three with heavy metals and one with polycyclic aromatic hydrocarbons (PAH), utilizing three different leaching solutions: D.W., a weak ionic solution (0.001 M CaCl2) and an artificially made soil wa­ter (ASW). In general, batch leaching implied larger contaminant removal than column leaching, possibly due to the more rough treatment of the soil particles, and guidelines would at times be exceeded by batch leaching but not column leaching. Utilization of CaCl2 was found to release much less heavy metal than D.W., whereas the metals mobilized by ASW were removed from solution by the filtration of soil leachates. Low molecular weight PAH was most efficiently mobilized by CaCl2, while D.W. worked better for high molecular weight PAH. Despite very low initial PAH-concentrations, tap- and groundwater criteria were exceeded by all leaching solutions.

Place, publisher, year, edition, pages
Pergamon Press, 2011
Keywords
Heavy metals, Leaching test, PAH, Re-cycling
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-7992 (URN)10.1016/j.wasman.2009.12.021 (DOI)000286411400003 ()20117924 (PubMedID)2-s2.0-78649838340 (Scopus ID)
Available from: 2009-09-23 Created: 2009-09-23 Last updated: 2017-12-13Bibliographically approved
Elgh-Dalgren, K., Waara, S., Düker, A., von Kronhelm, T. & van Hees, P. A. W. (2009). Anaerobic bioremediation of a soil with mixed contaminants: Explosives degradation and influence on heavy metal distribution, monitored as changes in concentration and toxicity. Water, Air and Soil Pollution, 202(1-4), 301-313
Open this publication in new window or tab >>Anaerobic bioremediation of a soil with mixed contaminants: Explosives degradation and influence on heavy metal distribution, monitored as changes in concentration and toxicity
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2009 (English)In: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 202, no 1-4, p. 301-313Article in journal (Refereed) Published
Abstract [en]

Two soils with explosives and metals were evaluated for the degradation efficiency of explosives by native microorganisms under anaerobic conditions. The commercially available method Daramend®, amended with zero-valent iron (ZVI), was compared with a horse-manure amended compost and a treatment with ZVI alone. In a moderately contaminated soil, Daramend® and ZVI treatment gave significantly higher removal rates compared  to compost and control treatments (Tukey’s test, P<0.05). The largest overall decrease in ecotoxicity, measured with bioluminescent bacteria (Vibrio fischeri), was achieved with ZVI-treatment. In a more contaminated soil no degradation of contaminants and no decline in soil toxicity could be distinguished after the same time period. Problems with establishment of anaerobic conditions during parts of the remediation process and low microbial activity due to acute toxicity of contaminants are plausible explanations. Redistribution that could potentially lead to mobilization of the co-contaminant Pb was not observed in either of the soils during the biological treatments.

Place, publisher, year, edition, pages
Springer Netherlands, 2009
Keywords
Bioremediation, explosives, Pb, Microtox®, mixed contaminants
National Category
Natural Sciences Environmental Sciences Inorganic Chemistry
Research subject
Environmental Chemistry
Identifiers
urn:nbn:se:oru:diva-5969 (URN)10.1007/s11270-009-9977-z (DOI)000269007400026 ()2-s2.0-69049092648 (Scopus ID)
Available from: 2009-03-09 Created: 2009-03-09 Last updated: 2017-12-13Bibliographically approved
Temnerud, J., Düker, A., Karlsson, S., Allard, B., Köhler, S. & Bishop, K. (2009). Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network. In: : . Paper presented at European Geosciences Union (EGU), General Assembly 2009, Vienna, Austria, April 19-24, 2009.
Open this publication in new window or tab >>Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network
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2009 (English)Conference paper, Oral presentation with published abstract (Refereed)
Keywords
Natural organic matter, boreal streams
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-42015 (URN)
Conference
European Geosciences Union (EGU), General Assembly 2009, Vienna, Austria, April 19-24, 2009
Available from: 2015-01-16 Created: 2015-01-16 Last updated: 2017-10-17Bibliographically approved
Temnerud, J., Duker, A., Karlsson, S., Allard, B., Köhler, S. & Bishop, K. (2009). Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network. Hydrology and Earth System Sciences, 13(9), 1567-1582
Open this publication in new window or tab >>Landscape scale patterns in the character of natural organic matter in a Swedish boreal stream network
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2009 (English)In: Hydrology and Earth System Sciences, ISSN 1027-5606, E-ISSN 1607-7938, Vol. 13, no 9, p. 1567-1582Article in journal (Refereed) Published
Abstract [en]

This paper defines landscape-scale patterns in the character of natural organic matter (NOM) and tests for relationships to catchment soil, vegetation and topography. The drainage network of a boreal catchment, subcatchment size 0.12-78 km(2), in Northern Sweden was sampled in August 2002 during a period of stable low water flow. The NOM was characterized with UV/Vis spectroscopy, fluorescence, XAD-8 fractionation (%humic substances), gel permeation chromatography (apparent molecular weight), and elemental composition (C:N). The largest spatial variation was found for C: N, absorbance ratio, and specific visible absorptivity. The lowest variation was in fluorescence index, %humic substances and molecular retention time. The variation in total organic carbon (TOC), iron and aluminium concentration was more than twice that of C: N. Between headwater and downstream sites no significant changes were distinguished in the NOM character. At stream reaches, junctions and lakes little change (<10%) in NOM character was observed. Common factor analysis and partial least squares regression (PLS) revealed that the spatial variation in surface coverage of lakes and mires could explain some of the variation of TOC and NOM character. Our suggestion is that the mosaic of landscape elements (different amounts of water from lakes, forest soil and mires) delivers NOM with varying characteristics to a channel network that mixes conservatively downstream, with possible small changes at some stream reaches, junctions and lakes.

National Category
Chemical Sciences Earth and Related Environmental Sciences
Research subject
Chemistry
Identifiers
urn:nbn:se:oru:diva-13214 (URN)000270321700003 ()2-s2.0-72049095899 (Scopus ID)
Funder
Swedish Research CouncilThe Royal Swedish Academy of Sciences
Available from: 2011-01-17 Created: 2011-01-11 Last updated: 2017-12-11Bibliographically approved
Allard, B., Karlsson, S., Greis, C., Pettersson, H. & Düker, A. (2009). Redistribution of Pu, Am, Cs and Np in salt marsh sediment: Wigtown Merse, Irish Sea. In: Rolf Zeisler, Kenan Ünlü, Susan Heller-Zeisler (Ed.), 8th International Conference on Methods and Applications of Radioanalytical Chemistry (MARC VIII): . Paper presented at 8th International Conference on Methods and Applications of Radioanalytical Chemistry (MARC VIII), Kona, Hawaii, April 5-10, 2009 (pp. 1-24). Melville, N.Y.: American Institute of Physics (AIP)
Open this publication in new window or tab >>Redistribution of Pu, Am, Cs and Np in salt marsh sediment: Wigtown Merse, Irish Sea
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2009 (English)In: 8th International Conference on Methods and Applications of Radioanalytical Chemistry (MARC VIII) / [ed] Rolf Zeisler, Kenan Ünlü, Susan Heller-Zeisler, Melville, N.Y.: American Institute of Physics (AIP), 2009, p. 1-24Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Melville, N.Y.: American Institute of Physics (AIP), 2009
National Category
Environmental Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-41968 (URN)
Conference
8th International Conference on Methods and Applications of Radioanalytical Chemistry (MARC VIII), Kona, Hawaii, April 5-10, 2009
Available from: 2015-01-16 Created: 2015-01-16 Last updated: 2017-10-18Bibliographically approved
Greis, C., Karlsson, S., Düker, A., Pettersson, H. & Allard, B. (2008). Determination of plutonium in environmental samples with quadrupole ICP-MS. Journal of Radioanalytical and Nuclear Chemistry, 275(1), 55-70
Open this publication in new window or tab >>Determination of plutonium in environmental samples with quadrupole ICP-MS
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2008 (English)In: Journal of Radioanalytical and Nuclear Chemistry, ISSN 0236-5731, E-ISSN 1588-2780, Vol. 275, no 1, p. 55-70Article in journal (Refereed) Published
Abstract [en]

A method for rapid determination of plutonium isotopes in environmental samples with ultrasonic nebulisation and quadrupole ICP-MS detection was established. Techniques for sample dissolution, pre-concentration and chemical separation were evaluated and the optimal scheme outlined. Comparisons with α-spectrometry and high resolution ICP-MS confirmed the suitability of the method when applied to different environmental matrices within the global fallout concentration range in the northern hemisphere as well as more contaminated sites. Operational detection limits were 0.5–1.5 fg/l for fresh waters and 0.03–0.1 ng/kg for lake sediments and saline marsh sediments.

Place, publisher, year, edition, pages
Berlin: Springer, 2008
National Category
Other Basic Medicine Chemical Sciences
Research subject
Chemistry
Identifiers
urn:nbn:se:oru:diva-3231 (URN)10.1007/s10967-006-7004-z (DOI)000251867200007 ()2-s2.0-37549053953 (Scopus ID)
Available from: 2007-02-13 Created: 2007-02-13 Last updated: 2018-01-13Bibliographically approved
Greis, C., Duker, A., Allard, B., Roos, P. & Holm, E. (2007). Plutonium remobilization in a humic-rich lake. Journal of Radioanalytical and Nuclear Chemistry, 277(1), 265-268
Open this publication in new window or tab >>Plutonium remobilization in a humic-rich lake
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2007 (English)In: Journal of Radioanalytical and Nuclear Chemistry, ISSN 0236-5731, E-ISSN 1588-2780, Vol. 277, no 1, p. 265-268Article in journal (Refereed) Published
Abstract [en]

Fresh water from Lake Svartsjön, Sweden, was collected and four fractions were prepared: (1) adsorption on DEAE, (2) flocculation with Ca2+, (3) co-precipitation with Fe hydrous oxide and (4) co-precipitation with Mn hydrous oxide. The plutonium level in the lake is 65 fg/l (222 μBq/l), measured by ICP-QMS and ICP-SFMS. Pronounced accumulation in fractions (1) (34%) and (2) (66%), combined with observed levels of organic matter indicate that plutonium is predominantly associated with organic matter. Measurements of isotopic ratios indicate that 77% of the plutonium originates from weapons testing and the remaining appears to originate from the Chernobyl accident.

National Category
Environmental Sciences Chemical Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-3234 (URN)10.1007/s10967-008-0741-4 (DOI)000257318800041 ()2-s2.0-46449100013 (Scopus ID)
Available from: 2007-02-13 Created: 2007-02-13 Last updated: 2017-12-14Bibliographically approved
Karlsson, S., Düker, A. & Grahn, E. (2007). Sediment chronologies of As, Bi, and Ga in Sweden - impact of industrialisation. Journal of Environmental Science and Health. Part A: Toxic/Hazardous Substances and Environmental Engineering, 42(2), 155-164
Open this publication in new window or tab >>Sediment chronologies of As, Bi, and Ga in Sweden - impact of industrialisation
2007 (English)In: Journal of Environmental Science and Health. Part A: Toxic/Hazardous Substances and Environmental Engineering, ISSN 1093-4529, E-ISSN 1532-4117, Vol. 42, no 2, p. 155-164Article in journal (Refereed) Published
Abstract [en]

The acid-leachable amount and pore water concentration of As, Bi and Ga in sediment cores from four remote lakes in a south to north transect in Sweden were used to recapitulate the pollution history of the elements. The diagenetic impact on the element distribution was elucidated from their solid/solution partition and relationships to elements indicative for diagenesis. Dating was made by their acid-leachable lead content in combination with the Pb-206/Pb-207 ratio. In one of the lakes this approach was validated against dating with Pb-210. The impact of diagenesis on the sediment distribution of theses elements was found to be low enough for a chronological interpretation of the sediment profiles, as evidenced by their ratios to elements indicative of the geological background. A closer examination of the diagenetic impact would however be required if a more detailed chronology is desired. This study has demonstrated that atmospheric deposition of arsenic, bismuth and gallium contributes to the sediment inventory of these elements. The major part of the deposition of arsenic and bismuth took place after the Second World War. For gallium no concentrations exceeding background were detected before circa 1930. Increased levels of arsenic are traceable to circa 1850. For bismuth increased levels are concluded to extend before 1790, i.e., background concentrations were not reached in the present cores. For all elements the atmospheric deposition has been lower towards the north.

Keywords
arsenic, bismuth, gallium, sediment, porewater, chronology, lakes
National Category
Chemical Sciences
Research subject
Chemistry
Identifiers
urn:nbn:se:oru:diva-13933 (URN)10.1080/10934520601011320 (DOI)000242986600007 ()
Available from: 2011-01-20 Created: 2011-01-13 Last updated: 2017-12-11Bibliographically approved
Svensson, M., Düker, A. & Allard, B. (2006). Formation of cinnabar: an estimation of favourable conditions.
Open this publication in new window or tab >>Formation of cinnabar: an estimation of favourable conditions
2006 (English)Manuscript (preprint) (Other academic)
National Category
Chemical Sciences
Research subject
Enviromental Science
Identifiers
urn:nbn:se:oru:diva-2970 (URN)
Available from: 2006-01-13 Created: 2006-01-13 Last updated: 2017-10-18Bibliographically approved
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