chlorofluorocarbons
1chlorofluorocarbons — n. type of greenhouse gas, one of the gases thought to be responsible for the hole in the ozone layer, CFC (Ecology)chlo·ro·flu·o·ro·car·bon || klÉ”Ërəʊ‚flÊŠÉ™rəʊ kÉ‘ËbÉ™n …
2chlorofluorocarbons — (CFCs) A gas compound which was used as a propellant in aerosol cans and in refrigerants …
3CFCs — (Chlorofluorocarbons or Chlorinated Fluorocarbons) A family of artificially produced chemicals receiving much attention for their role in stratospheric ozone depletion. On a per molecule basis, these chemicals are several thousand times more… …
4Datation des eaux souterraines — Au sein des aquifères, l’âge des eaux souterraines, c est à dire de son temps de transfert de son point d’infiltration vers son exutoire naturel ou non (captage) peut varier du jour au(x) million(s) d’années suivant le contexte géologique et… …
5Ozone depletion — Image of the largest Antarctic ozone hole ever recorded (September 2006) Ozone depletion describes two distinct but related phenomena observed since the late 1970s: a steady decline of about 4% per decade in the total volume of ozone in Earth s… …
6Chlorofluorocarbon — A chlorofluorocarbon (CFC) is an organic compound that contains carbon, chlorine, and fluorine, produced as a volatile derivative of methane and ethane. A common subclass are the hydrochlorofluorocarbons (HCFCs), which contain hydrogen, as well.… …
7Haloalkane — The haloalkanes (also known as halogenoalkanes or alkyl halides) are a group of chemical compounds, consisting of alkanes, such as methane or ethane, with one or more halogens linked, such as chlorine or fluorine, making them a type of organic… …
8DuPont — This article is about E.I. du Pont de Nemours and Company. For other uses, see Dupont (disambiguation). E. I. du Pont de Nemours and Company Type Public Traded as NYSE:  …
9Metered-dose inhaler — ProAir HFA Albuterol Sulfate(US) A metered dose inhaler (MDI) is a device that delivers a specific amount of medication to the airway and lungs, in the form of a short burst of aerosolized medicine that is inhaled by the patient. It is the most… …
10Montreal Protocol — For other similarly named agreements, see Montreal Convention (disambiguation). The largest Antarctic ozone hole recorded as of September 2006 The Montreal Protocol on Substances That Deplete the Ozone Layer (a protocol to the Vienna Convention… …
