The department of geological sciences has a finnigan mat 261 thermal ionization mass spectrometer for the measurement of isotopic compositions and elemental concentrations in the rb sr sm nd lu hf and u th pb systems as well as measurement of the elemental concentrations of li b mg k zr and ree by isotope dilution. The finnigan mat 253 stable isotope ratio mass spectrometer system delivers the highest precision for the determination of d h 13c 12c 15n 14n 18o 16o 34s 32s from so2 and sf6 28si 29si as well as ar kr and xe isotope ratios. Finnigan mat 262 tims.
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