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Isotope Ratio Mass Spectrometer (IRMS)


The USF Stable Isotope Lab houses a ThermoFisher Scientific Delta V Advantage Isotope Ratio Mass Spectrometer. With this instrument, we routinely measure light stable isotopes from a variety of materials.



GasBench II


The ThermoFisher Scientific GasBench II allows us to measure stable carbon, oxygen, and hydrogen isotopes from a variety of materials. We routinely analyze atmospheric, breath, and soil CO2 as well as CO2 produced from the acidification of carbonate material and dissolved inorganic carbon (DIC) and CO2 equilibrated with water. We also routinely analyze H2 from headspace equilibration with water.


Elemental Analyzer (EA)


With the Costech ECS4010 Elemental Analyzer, we are able to measure stable carbon and nitrogen isotopes in a variety of organic materials ranging from soils, proteins, plant materials, and animal tissues. We can also measure stable sulfur isotopes in both sulfates and sulfides.


High Temperature Conversion Elemental Analyzer (TCEA)


We use the TC/EA to measure stable oxygen and hydrogen isotopes in a wide range of materials, including phosphates (δ18O only), volcanic glasses, and organics.


Picarro Cavity Ringdown Spectrometer (Picarro)

The USF Stable Isotope Lab also houses a Picarro Water Isotope Analyzer with a vaporization module and a custom diffusion inlet.


Photo of Dr. Jonathan Wynn (School of Geosciences) setting up the Picarro on the R/V Atlantis for the 2015 Davis Strait - Arctic Circle Cruise courtesy of the USGS Coastal and Marine Science Center in St. Petersburg, FL