Q-S121 H2 Gas Analyzer
Q-S121 H2 Gas Analyzer is a flow through analyzer for measurements of H2 gas in 0-100 ppm range. The H2 analyzer can be customized for higher range measurements. Contact Qubit Systems for details. The Q-S121 has a Tin-dioxide (SnO2) semiconductor sensing element. Its output is sensitive to background gas (N2 vs Ar) and oxygen concentration. Factory calibration at 21% O2 for both N2 and Ar background gases is provided with the analyzer. When purchased with the C410 LabPro data acquisition interface and C901 Logger Pro software (optional) setup file is provided for correction of voltage output to H2 concentration in ppm.
Q-S121 can be used to measure Nitrogenase activity as H2 evolution in uptake hydogrenase (HUP) minus symbioses of legumes. The Q-S121 H2 Gas Analyzer may also be used to monitor the hydrogen consumption of organisms that have the HUP enzyme. This H2 Analyzer is a vital part of the Q-Box NF1LP Nitrogen Fixation Package.
Specifications:
- Range: 0 to 100 ppm H2 (higher range in customized units)
- Output: 0 to 5 V analog to digital interface
- output sensitive to O2 concentration and background gas
- calibration at 21% O2 in N2 and Ar is provided with the H2 Analyzer
- warranty: 1 years
References:
- Catherine A. Osborne, Mark B. Peoples and Peter H. Janssen. Detection of a Reproducible, Single-Member Shift in Soil Bacterial Communities Exposed to Low Levels of Hydrogen. Applied and Environmental Microbiology Vol. 76, Number 5, p1471-1479 (2010).
- Stephanie A. Fischinger, Marieta Hristozkova, Zaman-Allah Mainassara and Joachim Schulze. Elevated CO2 concentration around alfalfa nodules increases N2 fixation. J. Exp. Bot. Vol 61, Number 1, p121-130 (2009).
- Mark B. Peoples, Paul D. McLennan and John Brockwell. Hydrogen emission from nodulated soybeans [Glycine max (L.) Merr.] and consequences for the productivity of a subsequent maize (Zea mays L.) crop. Plant and Soil Vol 307, Numbers 1-2, p67-82 ( 2008).
- Jiamila Maimaiti, Ye Zhang, Jing Yang, Yan-Ping Cen, David B. Layzell, Mark Peoples and Zhongmin Dong. Isolation and characterization of hydrogen-oxidizing bacteria induced following exposure of soil to hydrogen gas and their impact on plant growth. Environmental Microbiology Vol 9, Issue 2, p435–444 (2007).
- Y.-P. Cen and D. B. Layzell. Does oxygen limit nitrogenase activity in soybean exposed to elevated CO2? Plant, Cell & Environment Vol 27, Issue 10, p1229–1238 (2004).
- Z. Dong, L. Wu, B. Kettlewell, C. D. Caldwell and D. B. Layzell. Hydrogen fertilization of soils – is this a benefit of legumes in rotation? Plant, Cell & Environment Vol 26, Issue 11, p1875–1879 (2003).
