Method and apparatus for determining ammonia concentration of ga

Details Method and apparatus for determining ammonia concentration of ga Method and apparatus for determining ammonia concentration of ga

1975-11-12

1976-08-31

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

23232E, 23254R, 23254E, G01N 2522, G01N 2158, G01N 2112

Patent

active

039778363

ABSTRACT:
An ammonia gas to be determined, and an oxidative gas containing nitrogen oxides in moles more than those of the ammonia are brought into contact with an analytical catalyst capable of forming nitrogen and water from ammonia and nitrogen oxides.
Concentrations of nitrogen oxides of the gas before and after the contact with the analytical catalyst are determined, and an ammonia concentration of the gas is determined by converting the difference between the concentrations of nitrogen oxides to the ammonia concentration by calculation.

REFERENCES:
patent: 3647387 (1972-03-01), Benson et al.
patent: 3870468 (1975-03-01), Neti
patent: 3877875 (1975-04-01), Jones et al.
patent: 3904371 (1975-09-01), Neti et al.

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