About Us

Biogeochemical Stable Isotope Facility

School of Ocean and Earth Science and Technology

About the Lab

Lab Phone: 808-956-5362

Fax: 808-956-5512

Lab Email: isobiogeo@soest.hawaii.edu

 

 

Our laboratory facility operates at the University of Hawai‘i at Mānoa within the School of Ocean & Earth Science & Technology (SOEST). Dr. Brian Popp, Departments of Geology and Geophysics and Oceanography, is the Director of the Biogeochemical Stable Isotope Facility.  Our lab houses 5 Finnigan/ThermoFinnigan/ThermoFisher gas ratio mass spectrometers, 3 Trace gas chromatographs, a Carlo Erba elemental analyzer, a Costech Instruments Elemental Combustion System and a GasBench II.  Below are descriptions of various equipment in our lab.

 

ThermoFinnigan DeltaPlus XP

Our DeltaPlus XP is equipped with dual inlet capabilities is interfaced with a Costech Instruments Elemental Combustion System.  The primary use of this mass spectrometer is to determine the δ15N and δ13C values of a variety of solid samples, such as plant, animal tissue, and samples on glass fiber filters. 

 

ThermoFinnigan Delta S

The Carlo Erba 2500 elemental analyzer is coupled with a Finnigan Delta S mass spectrometer. The instrument is primarily used to determine the δ15N and δ13C values of a variety of isotopically enriched solid samples, such as plant and animal tissue and various samples on glass fiber filters. 

 

Finnigan MAT252

The MAT252 is coupled to a the GasBench II peripheral which allows us to analyze δ13C values of dissolved inorganic carbon (DIC) in fresh or seawater and both δ15N and δ18O of dissolved nitrate as N2O.

 

ThermoFinnigan DeltaPlus V

Our DeltaPlus V is interfaced with a Trace GC/GCIII interface and a TriPlus autosampler for determining the δ15N, δ13C and δD values of individual compounds.  The primary use for this mass spectrometer is for the analysis of the δ15N values of individual amino acids.

 

ThermoFinnigan MAT253

Our MAT253 is equipped with a Trace GC Ultra with a TriPlus autosampler and a Trace GC/GCIII interface for determining the δ15N, δ13C and δD values of a variety of individual compounds.

 

Picarro

Our fully-automated Picarro L1102-i WS-CRDS allows automated hydrogen and oxygen isotopic measurements of both fresh and seawater samples at an affordable price.

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