CHClF/sub 2/ (F-22) in the earth's atmosphere

Journal Article · Wed Oct 01 04:00:00 EDT 1980 · Geophys. Res. Lett.; (United States)

DOI:https://doi.org/10.1029/GL007i010p00809· OSTI ID:6820738

Rasmussen, R A; Khalil, M A.K.; Penkett, S A; Prosser, N J.D.

Recent global measurements of CHClF/sub 2/ (F-22) are reported. Originally, GC/MS techniques were used to obtain these data. Since then, significant advances using an O/sub 2/-doped electron capture detector have been made in the analytical techniques, so that F-22 can be measured by EC/GC methods at ambient concentrations. The atmospheric burden of F-22 calculated from these measurements (average mixing ratio, mid-1979, approx.45 pptv) is considerably greater than that expected from the estimates of direct industrial emissions (average mixing ratio, mid-1979, approx.30 pptv). This difference is probably due to underestimates of F-22 emissions.

• Research Organization: Department of Environmental Science, Oregon Graduate Center, Beaverton, Oregon 97006
• OSTI ID: 6820738
• Journal Information: Geophys. Res. Lett.; (United States), Journal Name: Geophys. Res. Lett.; (United States) Vol. 7:10; ISSN GPRLA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CHROMATOGRAPHY
EARTH ATMOSPHERE
FREONS
GAS CHROMATOGRAPHY
HALOGENATED ALIPHATIC HYDROCARBONS
INDUSTRIAL WASTES
LAYERS
MIXING RATIO
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OZONE LAYER
POLLUTION
SEPARATION PROCESSES
WASTES