701-1333-00L  Isotopes and Biomarkers in Biogeochemistry Laboratory

SemesterAutumn Semester 2022
LecturersC. Schubert, R. Kipfer
Periodicityyearly recurring course
Language of instructionEnglish
CommentNumber of participants limited to 14.
Waiting list will be deleted 19.09.2022.
No enrollment possible after 20.09.2022.


701-1333-00 PIsotopes and Biomarkers in Biogeochemistry Laboratory Special students and auditors need a special permission from the lecturers.
Takes place in the 1st half of the semester.
Sampling takes place at Lake Rotsee near Lucerne at the first day and is obligatory. Practical laboratory work takes place at EAWAG in Kastanienbaum (near Lucerne, 3 times), at Duebendorf (once) and we meet 2 times at ETH (room on appointment) for preparing the presentation and give the presentation.Detailed Information will be sent by mail shortly before the sampling campaign.
4 hrs
Thu/108:00-18:00EAW A G »
27.10.08:15-14:00HG F 26.3 »
03.11.12:15-14:00HG F 26.1 »
C. Schubert, R. Kipfer

Catalogue data

AbstractThis 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.
ObjectiveStudents 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
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
Prerequisites / NoticeSampling will take place in Rotsee (Lucerne). We will have 3 laboratory days at Eawag Kastanienbaum, 1 laboratory day at Eawag Duebendorf, and 2 days of preparation of a presentation and the presentation itself at ETH (Center). The presentation will be evaluated and is necessary to pass the class.

Performance assessment

Performance assessment information (valid until the course unit is held again)
Performance assessment as a semester course
ECTS credits3 credits
ExaminersC. Schubert, R. Kipfer
Typeungraded semester performance
Language of examinationEnglish
RepetitionRepetition only possible after re-enrolling for the course unit.

Learning materials

No public learning materials available.
Only public learning materials are listed.


No information on groups available.


General : Special students and auditors need a special permission from the lecturers
Places14 at the most
Waiting listuntil 19.09.2022
End of registration periodRegistration only possible until 20.09.2022

Offered in

Environmental Sciences MasterMethods and Tools: Lab CoursesWInformation