Method for measurement of gas concentration

Details Method for measurement of gas concentration Method for measurement of gas concentration

1985-11-14

1987-10-06

Richman, Barry S.

Chemistry: analytical and immunological testing

Optical result

Spectrum analysis

436 75, 436 76, 436 77, 436103, 436104, 436181, 250423P, G01N 2147, G01N 3320

Patent

active

046983147

ABSTRACT:
A gas concentration measuring method comprises irradiating a sample gas with ultraviolet light in the presence of oxygen, thereby converting a specific gas for detection contained in the sample gas into fine oxide particles by photochemical reaction, irradiating the sample gas having the fine oxide particles contained therein with light, and detecting scattered light emitted from the fine oxide particles contained in the sample gas.

REFERENCES:
patent: 3869362 (1975-03-01), Machi et al.
patent: 4134344 (1982-02-01), Johns et al.
patent: 4199419 (1980-04-01), Holroyd et al.
patent: 4233030 (1980-11-01), Twitchett et al.
patent: 4447543 (1984-05-01), Harada et al.

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