Elementar Americas PrecisION isotope ratio mass spectrometer equipped with 10 collectors for N/ N (N2 or N2O), C/ C (CO2 or CO) and O/ O (N2O, CO2, O2, or CO) analysis as well as N2, O2, Ar ratiometry, and N2O isotopomer determination. For dissolved O2, N2, and Ar gas analysis, 6 collectors are used for simultaneous detection of masses 28, 29, 32, 33, 34, and 40. For N2O analysis, 5 collectors are used for simultaneous determination of masses 30, 31 (for the NO fragment) and 44, 45, and 46 (for the N2O fragment). This system is fitted with a PAL autosampler and custom on-line gas extraction and purge-trap (for N2O analysis) system.
Bay Instruments Membrane Inlet mass spectrometer (MIMS) equipped with a Pfeiffer Vacuum PrismaPlus QMG220 M1 QMS with Faraday and SEM detectors, a gas-tight ion source, including 2x ytrriated iridium filaments, a flow-through membrane inlet with high precision water pump and temperature control, peristaltic and vacuum pumps, standardization apparatus (stirrer, flask, support, refrigerated water bath), and a Lindberg/Blue MiniMite tube furnace. The MIMS will primarily be used for N2, O2, Ar measurements as well as N-labeled incubation experiments.
Antek 745 nitrate/nitrite reducer, vacuum pump and Antek 7020 nitric oxide detector (in the process of being replaced by a Teledyne T200 NO/NO2/NOx detector) for low-level nitrate/nitrite concentration measurements by vanadium(III) reduction with chemiluminescence detection of NOx.
- 1 Barnstead MicroPure Thermo Scientific UV/UF water purification system
- 1 centrifuge (Thermo Scientific Heraeus Megafuge 8)
- 2 Thermolyne large muffle furnaces
- 1 TD-700 Turner designs fluorometer
- 1 V-1200 VWR spectrophotometer
- 1 VWR mini incubator
- 1 VWR water bath
- 1 Eberbach reciprocal shaker
- 1 VWR oven (max 250 C)
- 1 VWR analytical balance (model VWR-214B2)
- 1 VWR balance (model VWR-3001E)
- 2 analog vortex mixers