Measurements of nitrous acid, nitrate radicals, formaldehyde, and nitrogen dioxide for the Southern California Air Quality Study by differential optical-absorption spectroscopy. Final report
Two differential optical absorption spectrometer (DOAS) systems were operated during the 1987 Southern California Air Quality Study (SCAQS) for the primary purpose of measuring atmospheric concentrations of nitrous acid (HONO) and the nitrate (NO3) radical, as well as ambient levels of nitrogen dioxide (NO2) and formaldehyde (HCHO). Measurements were conducted at Long Beach and Claremont, California, during the summer phase of the program and at Long Beach during the fall episodes. An extensive set of time-resolved (i.e., 15 min) measurements of HONO, NO2 and HCHO concentrations, as well as NO3 radical concentrations, were obtained during the SCAQS program by the DOAS technique under a wide range of pollutant and meteorological conditions.
- Research Organization:
- California Univ., Riverside, CA (United States). Statewide Air Pollution Research Center
- OSTI ID:
- 6264062
- Report Number(s):
- PB-92-102623/XAB; CNN: ARB-A6-146-32
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ABSORPTION SPECTRA
AIR POLLUTION
AIR POLLUTION MONITORING
ALDEHYDES
CALIFORNIA
CHALCOGENIDES
DEVELOPED COUNTRIES
FEDERAL REGION IX
FORMALDEHYDE
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INORGANIC ACIDS
METEOROLOGY
MONITORING
NITRATES
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS ACID
NORTH AMERICA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
RADICALS
SEASONAL VARIATIONS
SPECTRA
SPECTROPHOTOMETRY
USA
VARIATIONS