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Staff photo Erik Björn

Erik Björn

We study how the chemical structure of metal compounds control mechanisms and kinetics for reactions which are central for the cycling of metals in the environment.

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KB.C6, Linnaeus väg 10, (rum: B6.11.07) Umeå universitet, 901 87 Umeå

Chemical and biological processes of trace metals - from molecule to ecosystem

The research is focused on studies of chemical and biological processes of metal compounds in ecosystems, biological systems and industrial processes. We develop new powerful analytical techniques and experimental strategies to study chemical form (speciation) and reaction mechanisms and rates of trace metal compounds. An important area of focus is the study biogeochemical processes of mercury (Hg) in aquatic and terrestrial ecosystems. The research program aims to both understand such processes at the molecular level and to establish their importance in natural environmental systems.

To achieve these challenging objectives we develop analytical methods and experimental strategies to determine; molecular structure of Hg compounds, concentrations and thermodynamic stability constants of compounds and rate constants for their formation and degradation. We carry out experimental studies on both controlled model systems of varying complexity and on natural systems at realistic conditions. The developed methods and approaches are generally applicable to studies on trace metals, but the research program is well-focused on studies of how the chemical speciation of Hg controls its methylation and redox transformation reactions and bioaccumulation processes.

For further information about research activities see: http://moleculargeo.chem.umu.se/erik-bjorn/

Science of the Total Environment, Elsevier 2021, Vol. 755 : 1-9
Liem-Nguyen, Van; Skyllberg, Ulf; Björn, Erik
Geochimica et Cosmochimica Acta, Elsevier 2021, Vol. 294 : 106-125
Skyllberg, Ulf; Persson, Anna; Tjerngren, Ida; et al.
Geochimica et Cosmochimica Acta, Vol. 308 : 188-203
Wang, Baolin; Zhong, Shunqing; Bishop, Kevin; et al.
Frontiers in Environmental Science, Frontiers Media 2021, Vol. 8
Xu, Jingying; Liem-Nguyen, Van; Buck, Moritz; et al.
Frontiers in Microbiology, Frontiers Media S.A. 2020, Vol. 11
Capo, Eric; Bravo, Andrea G.; Soerensen, Anne L.; et al.
Journal of Hazardous Materials, Elsevier 2020, Vol. 387
Hu, Haiyan; Wang, Baolin; Bravo, Andrea G.; et al.
Talanta: The International Journal of Pure and Applied Analytical Chemistry, Elsevier 2020, Vol. 218
Huynh, Khoa; Liem-Nguyen, Van; Feng, Caiyan; et al.
Analytical and Bioanalytical Chemistry, Springer Berlin/Heidelberg 2020, Vol. 412, (7) : 1619-1628
Liem-Nguyen, Van; Nguyen-Ngoc, Hoang-Tung; Adediran, Gbotemi A.; et al.
Environmental Microbiology, John Wiley & Sons 2020, Vol. 22, (9) : 3685-3699
Schaefer, Jeffra K.; Kronberg, Rose-Marie; Björn, Erik; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2020, Vol. 54, (13) : 8094-8103
Song, Yu; Adediran, Gbotemi A.; Jiang, Tao; et al.
Acta Neurochirurgica, Springer 2020, Vol. 162, (12) : 3043-3053
Tabatabaei, Pedram; Asklund, Thomas; Bergström, Per; et al.
The FASEB Journal, John Wiley & Sons 2020, Vol. 34, (10) : 13978-13992
Tserga, Evangelia; Moreno-Paublete, Rocio; Sarlus, Heela; et al.
Science of the Total Environment, Elsevier 2020, Vol. 718
Wang, Baolin; Nilsson, Mats B.; Eklöf, Karin; et al.
Environmental Pollution, Elsevier 2020, Vol. 263
Åkerblom, Staffan; Nilsson, Mats B.; Skyllberg, Ulf; et al.
Environmental Science and Technology, AMER CHEMICAL SOC 2019, Vol. 53, (14) : 8187-8196
Adediran, Gbotemi A.; Liem-Nguyen, Van; Song, Yu; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2019, Vol. 53, (23) : 13757-13766
Skrobonja, Aleksandra; Gojkovic, Zivan; Soerensen, Anne L.; et al.
Scientific Reports, Nature Publishing Group 2019, Vol. 9
Xu, Jingying; Buck, Moritz; Eklöf, Karin; et al.
Applied and Environmental Microbiology, American Society for Microbiology 2018, Vol. 84, (23)
Bravo, Andrea G.; Peura, Sari; Buck, Moritz; et al.
Science of the Total Environment, Vol. 613-614 : 1069-1078
Eklöf, Karin; Bishop, Kevin; Bertilsson, Stefan; et al.
Limnology and Oceanography, Vol. 63 : S44-S53
Herrero Ortega, Sonia; Catalan, Núria; Björn, Erik; et al.
Water Research, Elsevier 2018, Vol. 146 : 146-158
Jiang, Tao; Bravo, Andrea G.; Skyllberg, Ulf; et al.
Environmental Science and Technology Letters, American Chemical Society (ACS) 2018, Vol. 5, (4) : 220-225
Kronberg, Rose-Marie; Schaefer, Jeffra K.; Björn, Erik; et al.
Journal of Catalysis, Academic Press 2018, Vol. 365 : 29-35
Kwong, Wai Ling; Lee, Cheng Choo; Shchukarev, Andrey; et al.
ACS Earth and Space Chemistry, American Chemical Society (ACS) 2018, Vol. 2, (10) : 1022-1028
Lambertsson, Lars; Lord, Charles J.; Frech, Wolfgang; et al.
Global Biogeochemical Cycles, AMER GEOPHYSICAL UNION 2018, Vol. 32, (10) : 1498-1513
Soerensen, A. L.; Schartup, A. T.; Skrobonja, Aleksandra; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2018, Vol. 52, (15) : 8292-8301
Song, Yu; Jiang, Tao; Liem-Nguyen, Van; et al.
Geochimica et Cosmochimica Acta, PERGAMON-ELSEVIER SCIENCE LTD 2018, Vol. 220 : 158-179
Zhu, Wei; Song, Yu; Adediran, Gbotemi A.; et al.
Nature Communications, Nature Publishing Group 2017, Vol. 8
Bravo, Andrea G.; Bouchet, Sylvain; Tolu, Julie; et al.
Environmental Pollution, Elsevier 2017, Vol. 223 : 19-30
Jiang, Tao; Skyllberg, Ulf; Björn, Erik; et al.
Science Advances, American association for the advancement of science 2017, Vol. 3, (1)
Jonsson, Sofi; Andersson, Agneta; Nilsson, Mats B.; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2017, Vol. 51, (7) : 3678-3686
Liem-Nguyen, Van; Skyllberg, Ulf; Björn, Erik
Environmental Science and Technology, American Chemical Society (ACS) 2017, Vol. 51, (7) : 3678-3686
Liem-Nguyen, Van; Skyllberg, Ulf; Björn, Erik
Environmental Pollution, Elsevier 2017, Vol. 229 : 531-538
Soerensen, A. L.; Schartup, A. T.; Skrobonja, Aleksandra; et al.
Water Research, Elsevier 2017, Vol. 115 : 318-328
Östman, Marcus; Lindberg, Richard H.; Fick, Jerker; et al.
Environmental Science and Pollution Research, Vol. 23, (11) : 10529-10541
Bravo, Andrea G.; Loizeau, Jean-Luc; Dranguet, Perrine; et al.
Waste Management, Elsevier 2016, Vol. 49 : 311-319
Edo, Mar; Björn, Erik; Persson, Per-Erik; et al.
Journal of Inorganic Biochemistry, Elsevier 2016, Vol. 160 : 24-32
Hakobyan, Shoghik; Rzhepishevska, Olena; Björn, Erik; et al.
Journal of Geophysical Research - Biogeosciences, Vol. 121, (1) : 233-245
Isidorova, Anastasija; Bravo, Andrea G.; Riise, Gunnhild; et al.
Journal of Hazardous Materials, Vol. 318 : 194-202
Kozyatnyk, Ivan; Bouchet, Sylvain; Björn, Erik; et al.
Global Biogeochemical Cycles, Vol. 30, (6) : 825-843
Kronberg, Rose-Marie; Drott, Andreas; Jiskra, Martin; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2016, Vol. 50, (17) : 9177-9186
Kronberg, Rose-Marie; Jiskra, Martin; Weiderhold, Jan. G; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2016, Vol. 50, (13) : 6983-6990
Liem-Nguyen, Van; Jonsson, Sofi; Skyllberg, Ulf; et al.
Education Inquiry, Vol. 7, (2) : 115-135
Ramstedt, Madeleine; Hedlund, Tomas; Björn, Erik; et al.
Environmental Science and Technology, American Chemical Society (ACS) 2016, Vol. 50, (21) : 11787-11796
Soerensen, Anne L.; Schartup, Amina T.; Gustafsson, Erik; et al.
Metallomics, Vol. 7, (6) : 996-1010
Niemiec, Maria Joanna; De Samber, B.; Garrevoet, J.; et al.
Environmental Science and Technology, Vol. 49, (1) : 177-185
Wiederhold, Jan G.; Skyllberg, Ulf; Drott, Andreas; et al.
Environmental Science and Technology, Vol. 48, (22) : 13207-13217
Jiskra, Martin; Saile, Damian; Wiederhold, Jan G.; et al.