Method of measurement of the concentration of a substance contai

Details Method of measurement of the concentration of a substance contai Method of measurement of the concentration of a substance contai

1976-05-06

1978-01-03

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

23232E, 250373, G01N 2122

Patent

active

040669041

ABSTRACT:
In a method for measuring the concentration of a substance contained in a gas, the gas is irradiated with a radiation having a sufficiently short wavelength to photodissociate the substance. A photometric measurement is then carried out on at least one of the products of photodissociation in order to determine its concentration which is proportional to the concentration of the substance to be measured.

REFERENCES:
patent: 2813981 (1957-11-01), Friedman
patent: 3601608 (1971-08-01), Randall et al.
patent: 3997416 (1976-12-01), Confer
Davidson et al, "Direct Observation of the Rate of Recombination of Iodine Atoms," Journal of Chemical Physics, vol. 19, No. 10, p. 1311, Oct. 1951.
Baardsen et al, "Detection of OH in the Atmosphere Using a Dye Laser," Appl. Phys. Lett., vol. 21, No. 5, pp. 209-211, Sept. 1972.

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