G - Physics
01
N
G01N 37/00 (2006.01) C12M 1/40 (2006.01) C12M 3/00 (2006.01) C12Q 1/26 (2006.01) G01N 1/28 (2006.01) G01N 7/00 (2006.01) G01N 27/407 (2006.01) G01N 35/00 (2006.01) G05D 11/00 (2006.01)
Patent
CA 2116706
An apparatus for measuring the concentration of minor gaseous components of a flowing gas stream is described. The apparatus, which is preferably computer controlled, includes gas mixing means and means to measure the concentration of at least two gases, including the minor component, in the gas stream. In order to calibrate the apparatus an auxiliary unit, which may include a gas generator, meters delivery of the minor component from a second source into the gas stream. The apparatus has many industrial and scientific applications and is particularly useful for measuring hydrogen concentrations from which a measure of nitrogenase activity in nitrogen fixing plants can be obtained.
Dowling Adrian N.
Hunt Stephen
Layzell David B.
Queen's University At Kingston
Steeg Carol Miernicki
LandOfFree
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