Dear Greg,

I would be interested in participating but I´m not sure if the 
lab-experiments we designed some years ago are serieous / scientific 
enough to be published. To introduce students to isotope fractionation, 
mass-spectrometry and gas-chromatography we do the following experiments:

1) Measurement of the isotopic composition of atmospheric oxygen and 
nitrogen and comparison with the isotopic composition of the same gases 
( and CO2) in expired air
2) Measurement of the C- isotopic composition of different sugars / 
honey and comparison with the C-isotopic composition of CO2 released 
during respiration of yeast feeded with the sugars / honey.
3) Measurement and comparison of the isotopic composition of CO2 of  
expired air and exhaust gas of cars.

Please let me know, if these topics may be of interest for the issue 
mentioned below.

Have a nice day

Ulrike Schulte

>> Second call for anyone interested in putting together some isotope 
>> related education articles for J. of Geoscience education
>
>
>
>
> Greg Michalski, Assistant Professor
> http://www.purdue.edu/eas/michalski/
> Department of Earth and Atmospheric Sciences
> Purdue University
> 550 Stadium Mall Dr.
> Lafayette IN.47907


-- 
------------------------------------------------
Dr. Ulrike Schulte
Institut für Geologie, Mineralogie und Geophysik
Lehrstuhl für Sediment- und Isotopengeologie
Ruhr-Universität Bochum
Universitätsstr. 150

D-44801 Bochum

Tel.: 0234/32-25454
Fax.: 0234/32-14571
------------------------------------------------