gas sample

Gas flow computer — Originally the gas flow computer was an electronic module that simply provided a dedicated gas flow computer function. Today gas flow computer is a misnomer since the gas flow computer function is a subfunction to an overall data acquisition and… …   Wikipedia

Gas chromatography — A gas chromatograph with a headspace sampler Acronym GLC, GC Classification chromatography Analytes organic inorganic …   Wikipedia

Gas chromatography-mass spectrometry — (GC MS) is a method that combines the features of gas liquid chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC MS include drug detection, fire investigation, environmental analysis,… …   Wikipedia

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

gas chromatography — n chromatography in which the sample mixture is vaporized and injected into a stream of carrier gas (as nitrogen or helium) moving through a column containing a stationary phase composed of a liquid or a particulate solid and is separated into… …   Medical dictionary

Gas phase titration — refers, generally, to any titration done in the gas phase. More specifically, it refers to a method for determining reactive species in the gas phase by reaction with an excess of some other gas, which acts as the titrant. Most commonly the… …   Wikipedia

gas chromatograph — n an instrument used to separate a sample into components in gas chromatography …   Medical dictionary

Gas-liquid chromatography — Infobox chemical analysis name = Gas liquid chromatography caption =A gas chromatograph with a headspace sampler acronym = GLC, GC classification =chromatography analytes = organic inorganic must be volatile manufacturers = Agilent (a spin off of …   Wikipedia

sample preparation — ▪ chemistry Introduction  in analytical chemistry (chemistry), the processes in which a representative piece of material is extracted from a larger amount and readied for analysis. Sampling and sample preparation have a unique meaning and special …   Universalium

Gas pycnometer — A gas pycnometer, a type of pycnometer, is a laboratory device used for measuring the density or more accurately the volume of solids, be they regularly shaped, porous or non porous, monolithic, powdered, granular or in some way comminuted,… …   Wikipedia

Sample (material) — In general, a sample is a limited quantity of something which is intended to be similar to and represent a larger amount of that thing(s). The things could be countable objects such as individual items available as units for sale, or a material… …   Wikipedia