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Isotopes and Biomarkers in Biogeochemistry Laboratory
Last Updated: 2026-02-05 15:46:59
Abstract
This course will illustrate how different tracers and isotopes are used in natural systems. Here especially the processes (transformation, timescales) that take place and can be revealed by tracers/isotopes will be demonstrated but also flux rates will be calculated using different tracers.
Objective
Students know how to use tracers/isotopes to investigate/understand ecosystems They will understand the methods and analytical devices related to tracer/isotope work Have a feeling for timescales on which natural processes occur Students will be able to apply different sampling techniques in aquatic sciences
Content
Basics: O,H isotopes as tracers for mixing in aquatic systems Carbon isotopes as tracer for methane oxidation 210Pb, 137Cs as a tracer for sedimentation rate/mixing SF6, Neon, He as tracers for exchange processes at the air/water interface Case assessment: Sampling of a Swiss lake (Rotsee) Sampling techniques for different elements Sample preparation for different techniques Measurements at isotope mass spectrometer/gamma counter Interpretation of results from the special sampling campaign and in a broader context
General Information
- Language
- English
- Levels
- MSC
- Frequency
- Yearly recurring
Examination
- Type
- ungraded semester performance
Registration & Places
- Max Places
- 14
- Signup End
- 21.09.2021
Course Components
| Type | Title | Time & Place | Hours |
|---|---|---|---|
| practical/laboratory course |
Isotopes and Biomarkers in Biogeochemistry Laboratory
1st half of the semester.
Sampling takes place at Rotsee near Luzern. Practical Lab work takes place at EAWAG Kastanienbaum/Duebendorf (room on appointment)
|
|
4 h weekly |