Chlorofluorocarbons sources

Abbreviations. MDI, metered dose inhaler HFA, hydrofluoroalkane CFC, chlorofluorocarbon. Source-. From Ref. 18. 

Associated Press. Thomas Midgley Awarded Highest Chemical Honor. Columbus Dispatch. (April 8, 1941) Courtesy of the Columbus Metropolitan Library. Kendall Beaton. Enterprise in Oil A History of Shell in the United States. New York Appleton-Century-Crofts, Inc., 1957. Source for TEL in World War II. Mohinder S. Bhatti. Historical Look at Chlorofluorocarbon Refrigerants. ASHRAE Transactions. 105, Part 1 (Jan. 23-27, 1999) 1186-1206. Source for Midgley... 

Other gases with significant anthropogenic sources contribute to acid rain (NO and SO ), the reduction of the ozone layer (chlorofluorocarbons), nutrient transport (NHj... 

CFCs, chlorofluorocarbon gases PFCs, perfluorocarbon gases. Source From Robertson, G. P (2004). Scope 62, The Global Carbon Cycle, Island Press... 

Carbon tetrachloride is a stable chemical that is degraded very slowly, so there has been a gradual accumulation of carbon tetrachloride in the environment as a consequence of releases from human activities. Until 1986, the largest source of release was from the use of carbon tetrachloride as a grain fumigant, but this practice has now been stopped. Other releases of carbon tetrachloride may occur during carbon tetrachloride production or during the use of carbon tetrachloride in the manufacture of chlorofluorocarbons and other chemical products. 

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