Lab Capabilities

  The Stable Isotope Chemistry Laboratory at Lehigh University is equipped with a Finnigan MAT 252 isotope ratio mass spectrometer fitted with a dual-inlet bellows inlet system and two automated microvolumes for analysis of small gas aliquots. A multiport inlet manifold allows automated analysis of up to 12 samples. The MAT 252 is fitted with 9 fixed collectors and is capable of analyzing hydrogen, carbon, oxygen, nitrogen, and sulfur isotopes.  A Finnigan Gas Bench II carrier-gas system allows highly automated analyses of O in waters, C in dissolved inorganic carbon (DIC), and C and O for carbonates.  This system can be configured for high-sensitivity carrier-gas analyses of N in silicate and organic materials (see photograph below; Bebout et al, 2007, Chemical Geology).

    A laser fluorination system for oxygen isotope analysis of silicates is capable of producing high-precision O-isotope data for extremely small samples (see the photograph on the main laboratory web page). The lab also houses more conventional (glass) vacuum-line extraction systems for the preparation of gases from a wide variety of geological, biological, and environmental materials.

GasBenchIISystem

High-vacuum system and interface with Finnigan Gas Bench II system used for analyses of N isotope
compositions of organic and silicate materials (see Bebout et al., 2007, Chemical Geology)

last updated 5-1-07