Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Gas_chromatography> ?p ?o }
- Gas_chromatography abstract "Gas chromatography (GC) is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture (the relative amounts of such components can also be determined). In some situations, GC may help in identifying a compound. In preparative chromatography, GC can be used to prepare pure compounds from a mixture.In gas chromatography, the mobile phase (or \"moving phase\") is a carrier gas, usually an inert gas such as helium or an unreactive gas such as nitrogen. The stationary phase is a microscopic layer of liquid or polymer on an inert solid support, inside a piece of glass or metal tubing called a column (an homage to the fractionating column used in distillation). The instrument used to perform gas chromatography is called a gas chromatograph (or \"aerograph\", \"gas separator\").The gaseous compounds being analyzed interact with the walls of the column, which is coated with a stationary phase. This causes each compound to elute at a different time, known as the retention time of the compound. The comparison of retention times is what gives GC its analytical usefulness.Gas chromatography is in principle similar to column chromatography (as well as other forms of chromatography, such as HPLC, TLC), but has several notable differences. First, the process of separating the compounds in a mixture is carried out between a liquid stationary phase and a gas mobile phase, whereas in column chromatography the stationary phase is a solid and the mobile phase is a liquid. (Hence the full name of the procedure is \"Gas–liquid chromatography\", referring to the mobile and stationary phases, respectively.) Second, the column through which the gas phase passes is located in an oven where the temperature of the gas can be controlled, whereas column chromatography (typically) has no such temperature control. Finally, the concentration of a compound in the gas phase is solely a function of the vapor pressure of the gas.Gas chromatography is also similar to fractional distillation, since both processes separate the components of a mixture primarily based on boiling point (or vapor pressure) differences. However, fractional distillation is typically used to separate components of a mixture on a large scale, whereas GC can be used on a much smaller scale (i.e. microscale).Gas chromatography is also sometimes known as vapor-phase chromatography (VPC), or gas–liquid partition chromatography (GLPC). These alternative names, as well as their respective abbreviations, are frequently used in scientific literature. Strictly speaking, GLPC is the most correct terminology, and is thus preferred by many authors.".
- Gas_chromatography thumbnail Gaschromatograph.jpg?width=300.
- Gas_chromatography wikiPageExternalLink Chromatographic_Columns.
- Gas_chromatography wikiPageID "596706".
- Gas_chromatography wikiPageLength "38019".
- Gas_chromatography wikiPageOutDegree "125".
- Gas_chromatography wikiPageRevisionID "701990321".
- Gas_chromatography wikiPageWikiLink Adsorption.
- Gas_chromatography wikiPageWikiLink Analyte.
- Gas_chromatography wikiPageWikiLink Analytical_chemistry.
- Gas_chromatography wikiPageWikiLink Archer_Martin.
- Gas_chromatography wikiPageWikiLink Argon.
- Gas_chromatography wikiPageWikiLink Atmosphere_of_Earth.
- Gas_chromatography wikiPageWikiLink Beta_particle.
- Gas_chromatography wikiPageWikiLink Boiling_point.
- Gas_chromatography wikiPageWikiLink CSI:_Crime_Scene_Investigation.
- Gas_chromatography wikiPageWikiLink Calibration_curve.
- Gas_chromatography wikiPageWikiLink Catalytic_combustion.
- Gas_chromatography wikiPageWikiLink Category:Gas_chromatography.
- Gas_chromatography wikiPageWikiLink Category:Laboratory_techniques.
- Gas_chromatography wikiPageWikiLink Chemical_decomposition.
- Gas_chromatography wikiPageWikiLink Chemical_polarity.
- Gas_chromatography wikiPageWikiLink Chevron_Corporation.
- Gas_chromatography wikiPageWikiLink Chromatography.
- Gas_chromatography wikiPageWikiLink Chromatography_software.
- Gas_chromatography wikiPageWikiLink Column_chromatography.
- Gas_chromatography wikiPageWikiLink Discharge_ionization_detector.
- Gas_chromatography wikiPageWikiLink Drug_reference_standard.
- Gas_chromatography wikiPageWikiLink Electron_capture_detector.
- Gas_chromatography wikiPageWikiLink Elution.
- Gas_chromatography wikiPageWikiLink Erika_Cremer.
- Gas_chromatography wikiPageWikiLink Ethylene.
- Gas_chromatography wikiPageWikiLink Evaporation.
- Gas_chromatography wikiPageWikiLink External_standard.
- Gas_chromatography wikiPageWikiLink Flame_ionization_detector.
- Gas_chromatography wikiPageWikiLink Forensic_science.
- Gas_chromatography wikiPageWikiLink Fractional_distillation.
- Gas_chromatography wikiPageWikiLink Fractionating_column.
- Gas_chromatography wikiPageWikiLink Fritz_Prior.
- Gas_chromatography wikiPageWikiLink Function_(mathematics).
- Gas_chromatography wikiPageWikiLink Functional_group.
- Gas_chromatography wikiPageWikiLink GC-MS-NMR.
- Gas_chromatography wikiPageWikiLink Gas.
- Gas_chromatography wikiPageWikiLink Gas_chromatography–mass_spectrometry.
- Gas_chromatography wikiPageWikiLink Gasoline.
- Gas_chromatography wikiPageWikiLink Germany.
- Gas_chromatography wikiPageWikiLink Glass.
- Gas_chromatography wikiPageWikiLink Hagen–Poiseuille_equation.
- Gas_chromatography wikiPageWikiLink Helium.
- Gas_chromatography wikiPageWikiLink Helium_ionization_detector.
- Gas_chromatography wikiPageWikiLink High-performance_liquid_chromatography.
- Gas_chromatography wikiPageWikiLink Hydrocarbon.
- Gas_chromatography wikiPageWikiLink Hydrogen.
- Gas_chromatography wikiPageWikiLink Inert.
- Gas_chromatography wikiPageWikiLink Infrared_detector.
- Gas_chromatography wikiPageWikiLink Infrared_spectroscopy.
- Gas_chromatography wikiPageWikiLink Inorganic_compound.
- Gas_chromatography wikiPageWikiLink Integral.
- Gas_chromatography wikiPageWikiLink Internal_standard.
- Gas_chromatography wikiPageWikiLink Inverse_gas_chromatography.
- Gas_chromatography wikiPageWikiLink Ion.
- Gas_chromatography wikiPageWikiLink Lavandula.
- Gas_chromatography wikiPageWikiLink Liquid.
- Gas_chromatography wikiPageWikiLink Mass_spectrometry.
- Gas_chromatography wikiPageWikiLink Metal.
- Gas_chromatography wikiPageWikiLink Mikhail_Tsvet.
- Gas_chromatography wikiPageWikiLink Mole_(unit).
- Gas_chromatography wikiPageWikiLink Molecule.
- Gas_chromatography wikiPageWikiLink Nicotiana_benthamiana.
- Gas_chromatography wikiPageWikiLink Nitrogen.
- Gas_chromatography wikiPageWikiLink Nitrogen–phosphorus_detector.
- Gas_chromatography wikiPageWikiLink Nobel_Prize.
- Gas_chromatography wikiPageWikiLink Nuclear_magnetic_resonance_spectroscopy.
- Gas_chromatography wikiPageWikiLink Organic_compound.
- Gas_chromatography wikiPageWikiLink Parts-per_notation.
- Gas_chromatography wikiPageWikiLink Photoionization_detector.
- Gas_chromatography wikiPageWikiLink Polymer.
- Gas_chromatography wikiPageWikiLink Pulsed_discharge_ionization_detector.
- Gas_chromatography wikiPageWikiLink Push-button.
- Gas_chromatography wikiPageWikiLink Reactivity_(chemistry).
- Gas_chromatography wikiPageWikiLink Response_factor.
- Gas_chromatography wikiPageWikiLink Salt.
- Gas_chromatography wikiPageWikiLink Separation_process.
- Gas_chromatography wikiPageWikiLink Solid.
- Gas_chromatography wikiPageWikiLink Solid-phase_microextraction.
- Gas_chromatography wikiPageWikiLink Standard_addition.
- Gas_chromatography wikiPageWikiLink Statistical_significance.
- Gas_chromatography wikiPageWikiLink Syringe.
- Gas_chromatography wikiPageWikiLink Thermal_conductivity_detector.
- Gas_chromatography wikiPageWikiLink Thermionic_emission.
- Gas_chromatography wikiPageWikiLink Thin-layer_chromatography.
- Gas_chromatography wikiPageWikiLink Ultraviolet.
- Gas_chromatography wikiPageWikiLink Unresolved_complex_mixture.
- Gas_chromatography wikiPageWikiLink Vapor_pressure.
- Gas_chromatography wikiPageWikiLink Volatilisation.
- Gas_chromatography wikiPageWikiLink Volatility_(chemistry).
- Gas_chromatography wikiPageWikiLink Work_function.
- Gas_chromatography wikiPageWikiLink File:GC_Oven_inside.jpg.
- Gas_chromatography wikiPageWikiLink File:GCruleof10.jpg.
- Gas_chromatography wikiPageWikiLink File:Gas_chromatograph-vector.svg.