Thermo Fisher Scientific (Bremen) Gmbh

Thermo Fisher Scientific Gmbh

Nils Stöbener

Johannes Schwieters

Hans-Jürgen Schlüter

Eric Wapelhorst

Jens Radke

Holger Jeglinski

Tim Stoltmann

Hans-Jürg Jost

An isotope ratio spectrometer is operated for measurement of a sample. First isotope ratios and first signal intensities are measured for a reference in the spectrometer, over a first measurement time period. A first relationship comprising a relationship between the first isotope ratios and the first signal intensities is determined. Sample isotope ratios and sample signal intensities are measured in the spectrometer, over a second measurement time period subsequent to the first measurement time period. Second isotope ratios and second signal intensities for a reference are measured in the spectrometer, over a third measurement time period subsequent to the second measurement time period. A second relationship comprising a relationship between the second isotope ratios and the second signal intensities is determined. A reference isotope ratio is estimated for a time X within the second measurement time period, based on the first relationship and the second relationship.

Isotope ratio measurement

Growing community of inventors

Bremen, Germany

Nils Stöbener