Record Display for the EPA National Library Catalog
RECORD NUMBER: 50 OF 508
|OLS Field Name||OLS Field Data|
|Main Title||Atmospheric freons and halogenated compounds /|
|CORP Author||Rutgers - The State Univ., New Brunswick, N.J. Dept. of Environmental Science.;Environmental Sciences Research Lab., Research Triangle Park, N.C. Gas Kinetics and Photochemistry Branch.|
|Publisher||Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,|
|Report Number||EPA/600/3-76/108; EPA-R-800833|
|Stock Number||PB-262 432|
|Subjects||Atmospheric ozone. ; Fluorocarbons--Environmental aspects. ; Halocarbons--Environmental aspects.|
|Additional Subjects||Gas analysis ; Fluorohydrocarbons ; Halogen organic compounds ; Sulfur hexafluoride ; Chlorine aromatic compounds ; Air pollution ; Atmospheric composition ; Chemical analysis ; Gas chromatography ; Colorimetric analysis ; Calibrating ; Graphic methods ; Chlorine organic compounds ; Aerosols ; Field tests ; Experimental design ; Trace elements ; Ozone ; Rural areas ; Stratosphere ; Troposphere ; Lower atmosphere ; Photochemical reactions ; Concentration(Composition) ; Monitoring ; Sources ; Toxicity ; Dichlorodifluoromethane ; Utilization ; Carbon tetrachloride ; Vinyl chloride ; Tables(Data) ; Iodine organic compounds ; Industrial wastes ; Atmospheric chemistry ; Air pollution detection ; Ethylene/chloro ; Procedures ; Freons ; Methane/iodo ; Ethylene/trichloro ; Ethylene/dichloro ; Methane/dichloro ; Biphenyl/chloro ; Methane/chloro-trifluoro ; Polychlorinated biphenyl|
|Collation||337 pages : illustrations ; 28 cm.|
Ambient levels of atmospheric Freons, halogenated hydrocarbons, and SF6 were measured at various locations in the U.S.A. Compounds such as CCl3F, CCl2F2, CH3-CCl3, and CCl4 were ubiquitious and generally measured at sub ppb levels. Tropospherically reactive compounds such as C2Cl4 and CHClCCl2 were frequently measured; other compounds were measured where a reasonable source was known. A novel pulsed flow coulometry gas chromatographic analysis along with other requisite analytical and calibration procedures were developed and used. Laboratory irradiation simulations established the tropospheric stability of CCl3F, CCl2F2, CH3CCl3, CCl4, CCl2FCClF2, the reactivity of the chlorinated ethylenes, and the stratospheric reactivity of CCl3F, CCl4, and CCl2F2. Adventitious labelling of air masses with halogenated compounds was used to demonstrate urban ozone transport to rural areas.
"EPA-600/3-76-108." "November 1976." PB 262 432--NTIS. Project officers: Joseph J. Bufalini and Bruce W. Gay, Jr. Includes bibliographical references (pages 325-336). Microfiche.