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Ulf Skyllberg Print E-mail
ulf_skyllbergMy main research interests may be categorized as:
  • Biogeochemistry of mercury under varying redox conditions in soils, sediments and waters with special emphasis on the linkage with organic carbon, sulfur and iron
  • Effects of forestry activities and wetland restoration on mercury biogeochemistry
  • Coordination chemistry of trace metals (Cd, Zn, Cu, Pb) in natural organic matter
  • Interactions between organic pollutants and natural organic matter
  • Acid-base reactions and particle surface charge generation in organic rich soils

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In collaboration with other groups at Umeå University, ETH Zürich and ESRF Grenoble, state-of-the-art spectroscopic, species-specific isotope dilution and isotope fractionation techniques are used to determine electronic and molecular structures as well as chemical species and biogeochemical processes of relevance and importance in soils, sediments and waters. Interaction with public authorities, forest companies and "problem owners" of contaminated soil and sediment secure that questions formulated are of highest relevance for society. The ultimate goal is to determine processes and factors in control of mobility, bioavailability and potential toxicity of trace elements.

Recent publications
Skyllberg, U. 2008. Competition among thiols, inorganic sulfides and polysulfides for Hg and MeHg in wetland soils and sediments under suboxic conditions - illumination of controversies and implications for MeHg net production. J. Geophys. Res. 113, G00C03, doi:10.1029/2008JG000745.

Ross, D. S., Matschonat, G., and Skyllberg, U. 2008. Cation-exchange in forest soils: The need for a new perspective. Europ. J. Soil Sci. 59, 1141-1159.

Drott, A., Lambertsson, L., Björn, E., and Skyllberg, U. 2008. Potential demethylation rate determinations in relation to concentrations of MeHg, Hg and pore water speciation of MeHg in contaminated sediments. Mar. Chem. 112, 93-101.

Karlsson, T., Elgh-Dahlgren, K., and Skyllberg, U. 2008. Modeling copper(II) complexation in a peat soil based on spectroscopic structural information. Soil Sci. Soc. Am. J., 72, 1286-1291.

Karlsson, T., Persson, P., Skyllberg, U., Mörth,C.-M., and Giesler, R. 2008. Characterization of iron(III) in organic soils using extended X-ray absorption fine structure spectroscopy. Environ. Sci. Technol. 42, 5449-5454.

Bergknut, M., Persson, P., and Skyllberg, U. 2008. Molecular characterization of brominated persistent pollutants using extended X-ray absorption fine structure (EXAFS) spectroscopy. Anal. Bioanal. Chem. 390, 921-928.

Drott, A., Lambertsson, L., Björn, E., and Skyllberg, U. 2008. Do potential methylation rates reflect accumulated methyl mercury in contaminated sediments? Environ. Sci. Technol. 42, 153-158.

Frankki, S., Persson, Y., Öberg, L., Skyllberg, U., and Tysklind, M. 2007. Mobility of chloroaromatic compounds in soil: Case studies of Swedish chlorophenol- contaminated sawmill sites. AMBIO 36, 452-457.

Björn, E., Larsson, T., Lambertsson, L., Skyllberg, U., and Frech, W. 2007. Recent advances in mercury speciation analysis with focus on spectrometric mehods and enriched stable isotope applications. AMBIO 36, 443-451.

Skyllberg, U., Drott, A., Lambertsson, L., Björn, E., Karlsson, T., Johnson, T., Heinemo, S-.Å., and Holmström, H. 2007. Net methyl mercury production as a basis for improved risk assessment of mercury-contaminated sediments. AMBIO 36, 437-442.

Drott, A., Lambertsson, L., Björn, E., and Skyllberg, U. 2007. Importance of dissolved neutral Hg-sulfides for methyl mercury production in contaminated sediments. Environ. Sci. Technol. 41, 2270-2276.

Frankki, S., Persson, Y., Tysklind, M., and Skyllberg, U. 2007. Partitioning of CP, PCPP, PCDEs, and PCDD/F among the aqueous phase and dissolved and particulate soil organic matter at three industrial sites contaminated by chlorophenol preservatives. Environ. Pollut. 148, 182-190.

Karlsson, T. and Skyllberg, U. 2007. Complexation of zink in organic soils - EXAFS evidence for sulfur associations. Environ. Sci. Technol. 41, 119-124.

Karlsson, T., Elgh-Dahlgren, K., Björn, E., and Skyllberg, U. 2007. Complexation of cadmium to sulfur and oxygen functional groups in an organic soil. Geochim. Cosmochim. Acta 71, 604-614.

Drott, A., Lambertsson, L., Björn, E:, and Skyllberg, U. 2007. Effects of oxic and anoxic filtration on determined methyl mercury concentrations in sediment pore water. Mar Chem. 103, 76-83.

Frankki, S., Persson, Y., Tysklind, M., and Skyllberg, U. 2006.Partitioning of CPs, PCDEs, and PCDD/Fs between particulate and experimentally enhanced dissolved organic matter in a contaminated soil. Environ. Sci. Technol. 40, 6668-6673.

Skyllberg, U., Lin, C-M., Bloom, P.R., Qian, J., and Bleam, W.F. 2006. Complexation of mercury (II) in soil organic matter: EXAFS evidence for linear two-coordination with reduced sulphur groups. Environ. Sci. Technol. 40, 4147-4180.

Karlsson, T., Persson, P., and Skyllberg, U. 2006. Complexation of copper (II) in organic soils and in dissolved natural organic matter: EXAFS evidence for chelate ring structures. Environ. Sci. Technol. 40, 2623-2628.

Frankki, S., and Skyllberg, U. 2006. Binding of chlorophenols to dissolved and particulate soil organic matter. Europ. J. Soil Sci. 57, 655-664.