CHLOROFLUOROCARBONS AND OZONE
نویسندگان
چکیده
منابع مشابه
First atmospheric observations of three chlorofluorocarbons
We report the first atmospheric observations of the Chlorofluorocarbons (CFCs) trifluorochloroethene, 3-chloropentafluoropropene and 4,4-dichlorohexafluoro-1butene by means of Gas Chromatography with Electron Capture and Mass Spectrometric detection (GC-ECD-MS) in air samples taken at the Taunus Observatory operated by the University of Frankfurt (Main) and the Jungfraujoch High Altitude Resear...
متن کاملAn adjoint sensitivity study of chlorofluorocarbons in the North Atlantic
[1] Adjoint sensitivities of CFC-11 concentrations and CFC-11/CFC-12 ratio ages in a North Atlantic general circulation model are analyzed. These sensitivities are compared with those of spiciness, T (b/a) S, where a, b are the thermal and haline expansion coefficients, respectively. High-sensitivity fields are candidates for providing the most powerful constraints in the corresponding inverse ...
متن کاملTracing the flow of North Atlantic Deep Water using chlorofluorocarbons
Chlorofluorocarbon (CFC) and hydrographic data collected in the North Atlantic in the late 1980s and early 1990s are used to confirm and add to earlier work on the large-scale circulation pathways and timescales for the spreading of North Atlantic Deep Water (NADW) components and how these components relate to the hydrographic structure. Throughout he western North Atlantic, high CFC concentrat...
متن کاملReplacement of Chlorofluorocarbons (cfc) in Metered Dose Inhalation Products
Additional Notes This guideline is intended to facilitate companies in compiling the dossier for submission for the replacement of a CFC propellant in an already authorised medicinal product. It identifies the considerations of quality, safety and efficacy which should be taken into account. The need for this guideline has been accentuated by the imminent lack of availability of existing replac...
متن کاملInvestigations of the environmental acceptability of fluorocarbon alternatives to chlorofluorocarbons.
Chlorofluorocarbons (CFCs) are currently used in systems for preservation of perishable foods and medical supplies, increasing worker productivity and consumer comfort, conserving energy and increasing product reliability. As use of CFCs is phased out due to concerns of ozone depletion, a variety of new chemicals and technologies will be needed to serve these needs. In choosing alternatives, in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Photochemistry and Photobiology
سال: 1992
ISSN: 0031-8655,1751-1097
DOI: 10.1111/j.1751-1097.1992.tb08540.x