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Analysis and Equipment

SIGF houses five dynamic-source IRMSs and seven peripheral devices with the capabilities of performing high precision H, C, N, O, S and clumped analyses on carbonates, sediments, waters, and organic matter.

We perform high-precision carbonate δ13C and δ18O analyses with a Thermo Scientific Kiel IV Automated Carbonate Device coupled to a Thermo Scientific  MAT 253 dual inlet isotope ratio mass spectrometer (IRMS). Our instrument is capable of analyzing CaCO3 samples as small as 10 μg, making our facility a viable option for specialized carbonate samples such as individual foraminifera.

With the new addition of a Thermo Fisher Scientific 253 Plus and modified Kiel IV Automated Carbonate Device, we are now capable of clumped isotope analyses of carbonate samples as small as 1.5 mg.

We routinely analyze an incredibly broad range of organic sample types for bulk total organic carbon, total organic nitrogen, δ13C, and δ15N compositions via two systems: Carlo Erba NA 1500 Elemental Analyzer and a new Thermo Scientific DELTAplusXP isotope ratio mass spectrometer, and Thermo Fisher Scientific Delta V Advantage Flash Elemental Analyzer (EA) IRMS.

With our new Thermo Fisher Scientific Delta V Advantage IRMS with GC-Isolink, we can perform H, C, and N isotope analyses on specific organic compounds.

Natural water DIC, soil gas, breath gas, etc. δ13C analyses are available using continuous flow headspace sampling via a Thermo Scientific GasBench II also connected to our DELTAplusXP IRMS. 

We perform water δ18O and δD analyses via Picarro Li2120 Cavity Ring-Down Spectrometer (CRDS). Water δ18O and δD analyses are also available using headspace equilibration methods on the GasBench II upon special request, or for samples with high dissolved organic contents that would interfere with cavity ring own analysis.

We at SIGF pride ourselves in method development and in doing everything within our abilities to meet the analytical requirements of our customers. We welcome inquiries regarding unique and unconventional analyses, and we will work to adapt our analytical capabilities to the specific needs of individual researchers, clients and students. 

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