| carbon monoxide |
A colorless, odorless, very toxic gas; formula CO, molecular weight 28. It is an intermediate product in the oxidation or combustion of organic material. It is present in the atmosphere at varying levels but is found everywhere, a result of its widely distributed sources and fairly long lifetime. Carbon monoxide is oxidized to carbon dioxide by the hydroxyl radical (OH) and plays a part in local and regional air quality.
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| carbon tetrachloride |
A significant contributor to the atmospheric chlorine budget, this compound, formula CCl 4 , has been used in industrial applications as a solvent. Its production is now banned as a result of the Montreal Protocol on Substances that Deplete the Ozone Layer.
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| carbon disulfide |
Reduced sulfur gas CS 2 formed predominantly in industrial processes, but also emitted from natural sources. Following its oxidation by the hydroxyl radical it is transformed largely to carbonyl sulfide (COS).
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| carbon |
(Symbol C.) The 12th element in the periodic table, mass 12.000. Carbon is one of the most versatile elements and combines with itself and many other elements to form a huge variety of organic compounds, for example, hydrocarbons and their derivatives, some of which are found in the atmosphere. Elemental carbon occurs in the atmosphere, mostly in the form of soot from incomplete combustion of organic matter. Smoke particles also have a large proportion of carbonaceous material in them. ...
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| carbohydrate |
An organic compound based on the general formula C x (H 2 O) y , performing many vital roles in living organisms. The simplest carbohydrates are the sugars (saccharides), including glucose and sucrose. Polysaccharides are carbohydrates of much greater molecular weight and complexity; examples are starch, which serves as energy store in plant seeds and tubers; cellulose and lignin that form the cell walls and woody tissue of plants of plants; glycogen, etc.
출처: www.fao.org/docrep/003/X3910E/X3910E06.htm
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