Detection and measurement of NO.sub.2 and O.sub.3

Details Detection and measurement of NO.sub.2 and O.sub.3 Detection and measurement of NO.sub.2 and O.sub.3

1975-10-14

1976-12-07

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

23232E, 423500, 423504, C01B 700, G01N 2126, G01N 2726, G01N 3300

Patent

active

039960056

ABSTRACT:
Small amounts of NO.sub.2 and O.sub.3 in air are determined by utilizing the reactions of these gases with solid alkali metal halides to produce halogen, and the reaction of NO.sub.2 with various salts such as PbI.sub.2 to produce NO; halogens produced from the reaction may be measured by the use of an electrolytic cell, the output of which is dependent on the halogen concentration of the gas contacting one electrode thereof, while the NO concentration may be determined by the chemiluminescence technique.

REFERENCES:
M. Dode, Chem. Abstr. 32, 2861 (1938).
C. W. Wadelin, Anal. Chem. 29, 441 (1957).
Barr et al., J. Appl. Phys. 33, 225 (1962).

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