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Who's Who in Environmental Science

Christian Bogdal

Bogdal

Dr. Christian Bogdal is a Swiss environmental chemist, whose work on lake sediment contaminants has gained international attention, with regards the issue of glacier and ice sheet melting due to climate change, liberating POPs, persistent organic pollutants.

    • Nationality
    • Swiss

    • Subject
    • Environmental Chemistry

    • Fields
    • Lake Sediment Pollutants

    • Positions
    • Senior Scientist in environmental chemistry, in the Safety and Environmental Technology Group at the Swiss Federal Institute of Technology Zurich (ETH Zurich) and in the Trace Organic Analytical Chemistry Group at the Swiss Federal Research Station Agroscope (Inst. f. Chemie-/Bioingenieuwissenschaften).

    • Associations
    • Visiting researcher in the Department of Environmental Science and Analytical Chemistry at Stockholm University (ACES), 2014.

    • Publications
    • Co-author of many papers, including:

      Recent sediments: environmental chemistry, ecotoxicology and engineering, Environ. Sci. Pollut., 2016.

      A temperate alpine glacier as a reservoir of polychlorinated biphenyls: Model results of incorporation, transport, and release?, Environ. Sci. Technol., 2016.

      Ten years after entry into force of the Stockholm Convention: What do air monitoring data tell about its effectiveness?, Environ. Pollut., 2016.

      Historical profiles of chlorinated paraffins and polychlorinated biphenyls in a dated sediment core from Lake Thun (Switzerland). Environ. Sci. Technol. 2008.

      Blast from the past: Melting glaciers as a relevant source for persistent organic pollutants. Environ. Sci. Technol. 2009.

      Long-Range and Regional Atmospheric Transport of POPs and Implications for Global Cycling, a chapter in Comprehensive Analytical Chemistry, Vol. 67., Ed. Zeng, E.Y.; Elsevier B.V., Amsterdam, Netherlands.

      External link to list of publications which Dr. Bogdal co-authored: US National Library of Medicine Archive

    • Theories/Experiments
    • Research Projects:

      Melting glaciers as a secondary source of persistent organic pollutants (POPs).

      Primary emissions and fate of POPs and other persistent chemicals in urban areas (CityPOP).

      Emissions, fate, and mass balance of POPs in Switzerland (SwissPOP).

      Long-range transport and source apportionment of atmospheric mercury (SwissQuick).

      Temporal trends, transformation and fate of Chlorinated Paraffins in the environment (FateCP).

      Environmental fate of brominated flame retardants and other persistent organic pollutants in aqueous ecosystems (BFRs).

    • Website
    • http://www.sust-chem.ethz.ch/people/current_members/bogdalC

    PhD ETH Zurich, 2008, Environment Fate of POPs.


    A Temperate Alpine Glacier as a Reservoir of Polychlorinated Biphenyls: Model Results of Incorporation, Transport, and Release

    Extract: In previous studies, the incorporation of polychlorinated biphenyls (PCBs) has been quantified in the accumulation areas of Alpine glaciers. Here, we introduce a model framework that quantifies mass fluxes of PCBs in glaciers and apply it to the Silvretta glacier (Switzerland). The models include PCB incorporation into the entire surface of the glacier, downhill transport with the flow of the glacier ice, and chemical fate in the glacial lake. The models are run for the years 1900-2100 and validated by comparing modeled and measured PCB concentrations in an ice core, a lake sediment core, and the glacial streamwater. The incorporation and release fluxes, as well as the storage of PCBs in the glacier increase until the 1980s and decrease thereafter. After a temporary increase in the 2000s, the future PCB release and the PCB concentrations in the glacial stream are estimated to be small but persistent throughout the 21st century. This study quantifies all relevant PCB fluxes in and from a temperate Alpine glacier over two centuries, and concludes that Alpine glaciers are a small secondary source of PCBs, but that the aftermath of environmental pollution by persistent and toxic chemicals can endure for decades.