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Whole air collection and analysis

Journal Article · · Atmos. Technol.; (United States)
OSTI ID:6290919

Over the past decade analytical techniques were developed to measure stratospheric and tropospheric mixing ratios of the following trace constituents: H/sub 2/, Ne, CH/sub 4/, CO, CO/sub 2/, N/sub 2/O, CFCL/sub 3/, CF/sub 2/Cl/sub 2/, and H/sub 2/O. As the list of measurements grew, so did the need for larger whole air samples. In 1973, therefore, the first cryogenic sampler to collect large stratospheric samples in a vertical profile was developed. Two additional systems that have since been put into use provide the capability to collect whole air samples at any altitude up to 45 km. Development work now in progress includes a cryogenic sampler to collect air samples aboard a small meteorological rocket such as the Arcas or Canadian Black Brant VI. This system will allow extension of the vertical profile to 70 km. Further developments in balloon payloads are under way in a collaborative project. A small, lightweight gas chromatograph is being constructed which will be flown with the cryogenic sampling systems. It will provide in-situ measurements of the highly reactive clorine trace constituents CCl/sub 4/, CH/sub 3/Cl, CH/sub 3/CCl/sub 3/, and others that cannot be stored in whole air samplers. Analytical techniques in the laboratory are being expanded to include H/sub 2/S (hydrogen sulfide), SO/sub 2/ (sulfur dioxide), COS (carbonyl sulfide), and CS/sub 2/ (carbon disulfide).

OSTI ID:
6290919
Journal Information:
Atmos. Technol.; (United States), Journal Name: Atmos. Technol.; (United States) Vol. 9; ISSN ATTED
Country of Publication:
United States
Language:
English

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Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR
AIR POLLUTION
ALKANES
BALLOONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
CRYOGENIC FLUIDS
CRYOGENICS
EARTH ATMOSPHERE
ELEMENTS
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN
METHANE
MIXING RATIO
MONITORING
NEON
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROUS OXIDE
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION
RARE GASES
SAMPLING
STRATOSPHERE
TROPOSPHERE
VAPORS
WATER VAPOR