ThermoFinnigan DeltaPLUS XP and Delta V Advantage – Continuous Flow Isotope Ratio Mass Spectrometers (CF-IRMS)
Picarro Wavelength Scanned Cavity Ring-Down Spectrometer (WS-CRDS)
The Picarro WS-CRDS system utilizes a CTC Analytics PAL autosampler to deliver a liquid water sample via injection into a vaporization chamber. The vaporized water sample is fed into a closed cavity for analysis, during which a discrete quantity of laser light is introduced into the cavity and the absorption curve of the light is used to determine the isotopic makeup of the water sample.
Costech Instruments – Elemental Combustion System (EA)
ThermoFinnigan Temperature Conversion Elemental Analyzers (TC/EA)
The two TC/EAs are used for sample pyrolysis and continuous flow analysis of 2H and 18O in liquids and solids. Samples are introduced by zero-blank autosampler into the furnace tube and are pyrolyzed at 1450 °C. The component hydrogen and oxygen gases are separated in a GC and are carried to the mass spectrometer in helium gas via a Finnigan Conflo III interface.
ThermoFinnigan Gas Bench II
The Gas Bench is used for automated acid digestion and analysis of 13C and 18O isotopes in carbonate minerals (calcite, dolomite, magnesite, hydromagnesite, siderite, ankerite), analysis of gases, and dissolved inorganic carbon (DIC) in fluids. Sample and standard mineral powders are treated with phosphoric acid in sealed glass exetainers which have been flushed with helium. The CO2 produced is introduced into the mass spectrometer in continuous flow mode, using helium as the carrier gas. The gas from the sample is run along with reference CO2 gas of known composition. DIC is analysed on the gas bench by putting 600 microlitres of the sample water in a sealed exetainer. The exetainer is flushed with helium to replace air in the headspace and to sparge CO2 dissolved in the water. Phosphoric acid is added, the sample is shaken then left to equilibrate for one hour. The CO2 produced is introduced into the mass spectrometer in continuous flow mode.
Sartorius ME5 and CP2P Microbalances