gas vapour mixture

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• gas chromatography — n. chromatography in which a gas, often nitrogen, combines with a vaporized mixture that is then passed through a long column of adsorbent material to identify its constituents * * * ▪ chemistry       in analytical chemistry, technique for… …   Universalium

• mixture — ► NOUN 1) a substance made by mixing other substances together. 2) (a mixture of) a combination of different things in which the components are individually distinct. 3) the charge of gas or vapour mixed with air admitted to the cylinder of an… …   English terms dictionary

• gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… …   Universalium

• Gas compressor — A gas compressor is a mechanical device that increases the pressure of a gas by reducing its volume. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. As gases are… …   Wikipedia

• Gas cylinder — For the mechanical devices used to impart a force from a pressurized liquid or gas, see pneumatic cylinder. For the large structures used to store town gas, see gas holder. Industrial compressed gas cylinders used for oxy fuel welding and cutting …   Wikipedia

• gas — n. & v. n. (pl. gases) 1 any airlike substance which moves freely to fill any space available, irrespective of its quantity. 2 a such a substance (esp. found naturally or extracted from coal) used as a domestic or industrial fuel (also attrib. :… …   Useful english dictionary

• gas chromatography — /gæs kroʊməˈtɒgrəfi/ (say gas krohmuh togruhfee) noun a very sensitive method of analysing a complex mixture of volatile substances, which depends on the relative speeds with which the various components of the mixture pass through a long, narrow …  

• gas chromatography (GC) — Type of chromatography with a gas mixture as the mobile phase. In a packed column, the packing or solid support (held in a tube) serves as the stationary phase (vapour phase chromatography, or VPC) or is coated with a liquid stationary phase (gas …   Universalium

• gas — noun (plural gases or chiefly US gasses) 1》 an air like fluid substance which expands freely to fill any space available, irrespective of its quantity.     ↘Physics a substance of this type that cannot be liquefied by pressure alone. Compare with …   English new terms dictionary

• mixture — noun a substance made by mixing other substances together. ↘the process of mixing or being mixed. ↘(a mixture of) a combination of different things in which the components are individually distinct. ↘the charge of gas or vapour mixed with air… …   English new terms dictionary

• natural gas — a combustible mixture of gaseous hydrocarbons that accumulates in porous sedimentary rocks, esp. those yielding petroleum, consisting usually of over 80 percent methane together with minor amounts of ethane, propane, butane, nitrogen, and,… …   Universalium