Standard test method for oxidant (ozone) content of the atmosphere

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7087612

This method covers the determination of low concentrations of oxidant (ozone) in the atmosphere. The method is not specific for ozone since other oxidizing and reducing substances interfere. The interference of sulfur dioxide (SO/sub 2/) and nitrogen dioxide (NO/sub 2/) can be eliminated during the analysis of the sample. The limit for detection of ozone by the method described is 1 to 16 ..mu..g. For samples of higher concentration, appropriate dilutions with the absorbing solution must be made. Micro amounts of oxidant (ozone) are collected by absorption in a solution of alkaline potassium iodide. The iodine equivalent to the concentration of oxidant present in the air released after acidification is determined precisely and rapidly spectrophotometrically by measuring the absorption of the triiodide ion at 352 nm.

• OSTI ID: 7087612
• 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

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
AIR
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
OZONE
PHOSPHORS
POTASSIUM COMPOUNDS
POTASSIUM IODIDES
SENSITIVITY
SORPTION
SPECTROPHOTOMETRY
STANDARDS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES