P-Campus-Ringvorlesung am 14.09.23
Am 14. September wird die P-Campus-Ringvorlesung 2023 nach der Sommerpause fortgesetzt. Dr. Marion Kanwischer vom Leibniz-Institut für Ostseeforschung Warnemünde (IOW) spricht über "Anthropogenic and natural organic trace substances in the Baltic Sea - Current activities, challenges and future perspectives".
Der Vortrag wird online per Webex übertragen und beginnt um 15:00 Uhr.
Abstract
The Baltic Sea is an encapsulated sea with only limited water exchange with the North Sea, but substantial riverine inflow. Those transport contaminants from agricultural and industrial uses in the catchment area. Therefore, the Baltic Sea is affected by pollution since the onset of industrialization in the late 19th century. IOW is conducting Baltic Sea long term observations on legacy pollutants; within the German EEZ on behalf of the Federal Maritime and Hydrographic Agency. The data series show continuously reducing concentrations of a number of these contaminants in the Baltic Sea. In parallel, a variety of new substances enter the Baltic Sea where they might influence marine life. Aiming the analysis of such emerging contaminants and further Baltic Sea relevant substances, method development is a continuous and substantial part of our work. In this regard and as part of our research within the PCampus, we developed methods for the analysis of two very polar compounds – the globally used broad spectrum herbicide glyphosate and the natural compound methyl phosphonate which is discussed as potential substrate for methane formation in oxic water. The interplay between the chemical properties of these substances and the saline seawater matrix hampered their analysis in seawater with common methods. Our work within the PCampus finally enabled us to report on glyphosate and methyl phosphonate concentrations for the Baltic Sea.