Staff
Lenny Winkel
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Prof. Dr. Lenny Winkel
About Me
Research Scientist, Head Environmental Inorganic Geochemistry
Research Interests
Molecular to global scale biogeochemical processes that control the mobility and cycling of health-impacting trace elements in the environment.
The effects of environmental stresses, such as human activities and climate change on trace element cycles.
Predictions of trace element distributions based on biogeochemical and climate data.
Research statement
The global cycle of selenium
Selenium is a trace element that is of fundamental importance to human health. However, it is also an element with a small range between dietary deficiency and toxic dosages. This narrow range combined with the higly uneven geographical variation in environmental selenium concentrations has resulted in significant health problems. To prevent future health hazards it is essential to get a better understanding of the processes that control the global distribution of selenium. To advance this understanding we are investigating globally important sources, pathways and sinks of selenium in the environment.
Arsenic contamination of groundwaters in Southeast Asia
Contamination of groundwater with the naturally occuring trace element arsenic is a major health problem, especially in South and Southeast Asia. Arsenic is enriched in the groundwater via process that involve microbial and chemical reductive dissolution of arsenic-bearing minerals in aquifer sediments. To efficiently respond to the arsenic crisis, it is of crucial importance to recognise areas that are at high risk of groundwater arsenic contamination. To facilitate this process we have developed large-scale prediction maps that indicate areas that are at risk of arsenic groundwater contamination. Further studies aimed at elucidating processes of As mobilization are planned.
Selected Publications
- L.H.E. Winkel, C.A. Johnson, M. Lenz, T. Grundl, O.X. Leupin, M. Amini, L. Charlet (2012) Environmental selenium research: from microscopic processes to global understanding (Feature). Environmental Science and Technology 46, 571-579.
- L.H.E. Winkel, C. Stengel, M. Amini, M. Berg, Pham Thi Kim Trang, Vi Mai Lan, Pham Hung Viet, Nguyen Thi Ha, Nguyen Van Dan (2011) Arsenic pollution of groundwater in Vietnam exacerbated by deep aquifer exploitation for more than a century. PNAS 108, 1246-1251.
- L. Winkel, J. Feldmann and A.A. Meharg (2010) Quantitative and qualitative trapping of volatile methylated selenium species entrained through nitric acid. Environmental Science and Technology 44, 382-387.
- L. Winkel, M. Berg, M. Amini, S.J. Hug and C.A. Johnson (2008) Predicting groundwater arsenic contamination in Southeast Asia from surface parameters. Nature Geoscience 1, 536-542.
- M. Amini, K.C. Abbaspour, M. Berg, L. Winkel, S.J. Hug, E. Hoehn, H. Yang, A.C. Johnson (2008) Statistical Modeling of Global Geogenic Arsenic Contamination in Groundwater. Environmental Science and Technology 42, 3669-3675.
Curriculum Vitae
2018-present | Associate Professor of Inorganic Environmental Geochemistry, ETH Zurich, Department of Environmental Systems Science. |
2013-2018 | Tenure-track Assistant Professor of Inorganic Environmental Geochemistry, ETH Zurich, Department of Environmental Systems Science. |
2011-2017 | Assistant Professor (SNSF Professorship) of Inorganic Environmental Geochemistry, ETH Zurich, Department of Environmental Systems Science. |
2011-present |
Leader of the Inorganic Environmental Geochemistry Group, Department of Water Resources and Drinking Water, Eawag, Dübendorf, Switzerland. |
2009-2011 | Marie Curie Experienced Researcher, Institute of Earth Science − ISTerre University of Grenoble, France. |
2009 | Marie Curie Experienced Researcher, Department of Environmental Engineering, Technical University of Crete, Chania, Greece. |
2009-2011 | Marie Curie Experienced Researcher, Department of Chemistry and Department of Biological Sciences, University of Aberdeen, UK. |
2008-2009 | Marie Curie Experienced Researcher, Institute of Earth Science ISTerre University of Grenoble, France, and scientific visitor at the Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Cadarache, France (July – August 2008). |
2006-2008 | Post-doctoral research fellow, Department of Water Resources and Drinking Water, Eawag, Dübendorf Switzerland. |
2001-2006 | PhD student and Research Assistant, Institute for Mineralogy, Department of Earth Sciences, ETH Zurich & General Energy Research Department, Paul Scherrer Institut, Villigen, Switzerland. |
2000-2001 | Research and teaching assistant at the Institute of Mineralogy, Earth |
2000 | Diploma studies in Geology, Utrecht University, the Netherlands. |
Address
E-Mail: | lenny.winkel@cluttereawag.ch |
Phone: | +41 58 765 5601 |
Fax: | +41 58 765 5802 |
Address: | Eawag
Überlandstrasse 133 8600 Dübendorf |
Office: | BU C05.1 |