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Standard test method for oxides of nitrogen in gaseous combustion products (phenol-disulfonic acid procedures)

Journal Article · · Annu. Book ASTM Stand.; (United States)
OSTI ID:6732200
A phenol-disulfonic acid colorimetric procedure is described for the determination of total oxides of nitrogen in gaseous effluents from combustion. The oxides of nitrogen are oxidized to nitric acid by gas phase oxidation due to oxygen in the sample and an absorbing solution. The resulting nitric acid is reacted with phenol disulfonic acid to produce the yellow color which is measured colorimetrically. The method is applicable to concentrations of oxides of nitrogen as NO/sub 2/ of 5 ppM to several thousand ppM by volume.
OSTI ID:
6732200
Journal Information:
Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 26; ISSN ASTSA
Country of Publication:
United States
Language:
English