Chemical instrumentation for field studies of atmospheric wet deposition processes

Conference · Tue Apr 01 00:00:00 EST 1986 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:5655225

Tanner, R L

Field studies of wet deposition processes require the differentiation and determination of many trace reactive species in the atmosphere. The species may be present in clear-air-gaseous or aerosol phases, or they may be distributed between cloudwater or precipitation and interstitial gaseous phases. Analytical requirement on existing techniques have been extremely rigorous and, in several cases, have required development of new approaches to the sampling and determination of critical species. This paper views these developments with respect to airborne sampling in the following general areas: determination of sub-ppb levels of nitrogen oxides (NO, NO/sub x/, HNO/sub 3/) in real-time using ozone chemiluminescence; determination of sub-ppb levels of sulfur dioxide and aersol sulfate in real-time using the flame photometric detector; determination of oxidants (ozone, PAN, H/sub 2/O/sub 2/) in gaseous and aqueous phases; determination of organic species (hydrocarbons, aldehydes, acids in gaseous and aqueous phases; cloud/raindrop - free air sampling; collection of aqueous liquid and solid samples; direct measurement of particle size distributions (aerosols, cloud droplets, rain droplets.)

• Research Organization: Environmental Chemistry Div., Dept. of Applied Science, Brookhaven National Lab., Building 426, Upton, NY 11973
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5655225
• Report Number(s): CONF-860425-
• Journal Information: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 31:2; Conference: 191. American Chemical Society national meeting, New York, NY, USA, 13 Apr 1986
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
NITRIC ACID
AIR POLLUTION MONITORING
ATMOSPHERIC CHEMISTRY
NITROGEN OXIDES
SULFUR DIOXIDE
CHEMILUMINESCENCE
CLOUDS
DROPLETS
ELEMENTS
FLAME PHOTOMETRY
HYDROGEN PEROXIDE
PARTICLE SIZE
PARTICULATES
POLLUTANTS
QUANTITATIVE CHEMICAL ANALYSIS
SAMPLING
TRACE AMOUNTS
WASHOUT
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMISTRY
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LUMINESCENCE
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PEROXIDES
PHOTOMETRY
PRECIPITATION SCAVENGING
SEPARATION PROCESSES
SIZE
SULFUR COMPOUNDS
SULFUR OXIDES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)