Eingeladen durch Britta Planer-Friedrich.
Alkylated metal(loid) species occur in the environment preferentially within reducing and acid habitats; while methylated compounds are naturally formed by biomethylation, higher alkylated ones are of industrial origin (e.g. biocides). They can be found in fully and partly alkylated forms, thus resembling volatile (in air) and water soluble species, resp. Up to now more than hundred species have been described in highly variable concentrations (mass fractions from 10-12 to 10-5). These concentrations significantly overlap with those for which biological effects are observed, so certain environmental scenarios (“hot spots”) demand toxicological evaluation (e.g. MMM in fish, TMA in natural gas or alkylated As, Sb, and Sn in composting). Besides investigating the toxicity of alkylated metal(loid) species in respect to human health, additionally it will be interesting to know, if methylation can also happen in the course of human metabolism. While this is fairly good known for methylation of arsenic in the liver, it seems not to be the case for mercury (where mainly demethylation is reported). Our group was successful to prove some methylation for bismuth, but for this element another interesting pathway could be pointed out: Methylated forms can be formed in the colon via biomethylation, and subsequently are found in blood and exhaled air.
Datum | Vortragender | Titel |
---|---|---|
H6 29.10.2009 | Dr. Thanh Nguyen University of Bayreuth, Department of Plant Ecology | Agricultural Policy Analysis: The cases of Vietnam and South Korea [Abstract] |
H6 05.11.2009 | Prof. Alfred Hirner Univ. Duisburg-Essen, Institut für Umweltanalytik und Angewandte Geochemie | Alkylated metal(loid) species in environmental chemistry and medicine [Abstract] |
H6 12.11.2009 | Dr. Christian Kölling Bayerische Landesanstalt für Wald und Forstwirtschaft, Abt. Waldökologie - Standort und Bodenschutz | Baumartenwahl im Klimawandel [Abstract] |
H6 19.11.2009 | Dr. Henrik von Wehrden Uni Halle- Wittenberg | Conservation of a vast arid ecosystem - Habitat mapping and modelling in southern Mongolia [Abstract] |
H6 03.12.2009 | Prof. Dr. Bernd Mahr TU Berlin, Institut für Telekommunikationssysteme | Modell und Modellgebrauch - Die Logik der Modelle [Abstract] |
Montag H8 07.12.2009 | Prof. Yaoming Ma (Vortrag fällt aus!) Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, CAS, Beijing | Vortrag fällt aus! [Abstract] |
H6 10.12.2009 | Dr. Guido Wiesenberg University of Bayreuth, Department for Agroecosystem Research | Lipids in plants and soils: New insights and challenges regarding formation, incorporation and turnover [Abstract] |
H6 17.12.2009 | Prof. Dr. Thomas Nauß Universität Bayreuth, Abteilung Klimatologie | Research at the new climatology group at UBT - an introduction [Abstract] |
H6 07.01.2010 | Dr. Torsten Meiners Angewandte Zoologie/Ökologie der Tiere, FU Berlin | Chemical diversity in tritrophic interactions - when things get complex [Abstract] |
H6 14.01.2010 | PD Dr. Alfred Becker Potsdam-Institut für Klimafolgenforschung e. V. | Integrated eco-hydrological analysis in the Elbe river basin [Abstract] |
Freitag H8 12:15 15.01.2010 | Professor Dr. Yiqi Luo Department of Botany and Microbiology, University of Oklahoma | Ecosystem-climate interactions: Impacts, feedback, mechanisms and predictions [Abstract] |
H6 21.01.2010 | Prof. Dr. Matthias Rillig FU Berlin, Institut für Biologie, Arbeitsgruppe Ökologie der Pflanzen | Bodenstruktur und arbuskuläre Mykorrhizapilze [Abstract] |
H6 28.01.2010 | Dr. Frank Schurr Universität Potsdam, AG Vegetationsökologie und Naturschutz | From moving seeds to shifting ranges: A demographic approach to plant biogeography [Abstract] |
H6 04.02.2010 | Dr. Frank Keppler Max-Planck-Institut für Chemie in Mainz, Abt. Atmosphärenchemie | Produzieren Pflanzen tatsächlich Methan? [Abstract] |
H6 11.02.2010 | Dr. Lian Pin Koh ETH Zürich | Can carbon payment schemes stop the spread of industrial agriculture in South-East Asia? [Abstract] |
BayCEER-Kolloquium: |
---|
Do. 28.01.2021 BayCEER Mitgliederversammlung |
Do. 15.04.2021 - folgt - |
Do. 22.04.2021 - folgt - |
Do. 29.04.2021 - folgt - |
Ökologisch-Botanischer Garten: |
Do. 11.02.2021 Online-Veranstaltung: Mit dem Kanu durch den Regenwald. Eine Expedition in die Überschwemmungswälder Süd-Venezuelas |
13.01.2020 Why Science Communication? |
24.05.2019 Stoichiometric controls of C and N cycling |
07.05.2019 Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA |
16.04.2019 Picky carnivorous plants? |