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Overview

gas-liquid chromatography

A technique for separating or analysing mixtures of gases by chromatography. The apparatus consists of a very long tube containing the stationary phase, a nonvolatile liquid, such as a ...

gas-liquid chromatography

gas-liquid chromatography   Quick reference

A Dictionary of Biology (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Life Sciences
Length:
146 words

...gas-liquid chromatography A technique for separating or analysing mixtures of gases by chromatography . The apparatus consists of a very long tube containing the stationary phase, a nonvolatile liquid, such as a hydrocarbon oil coated on a solid support. The sample is often a volatile liquid mixture (e.g. of fatty acids), which is vaporized and swept through the column by a carrier gas (e.g. hydrogen). The components of the mixture pass through the column at different rates and are detected as they leave, either by measuring the thermal conductivity of the gas...

gas–liquid (partition) chromatography

gas–liquid (partition) chromatography   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
88 words

...–liquid (partition) chromatography an analytical method based on the partition chromatographic separation of the components of a mixture through the use of a stationary liquid phase held in place on a solid support and a mobile gas phase flowing over the liquid phase in a controlled manner. Typically, the column is heated to temperatures in the range 50–300°C and the technique is applicable to compounds that partition appreciably into the vapour phase in that range. Detection of the eluents is commonly by a flame ionization detector...

gas–liquid chromatography

gas–liquid chromatography   Reference library

The New Oxford Dictionary for Scientific Writers and Editors (2 ed.)

Reference type:
Subject Reference
Current Version:
2009

...–liquid chromatography Chem. (en dash) Abbrev.: ...

gas–liquid chromatography

gas–liquid chromatography noun   Quick reference

New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
35 words
gas–liquid chromatography

gas–liquid chromatography noun   Quick reference

Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
37 words
gas-liquid chromatography

gas-liquid chromatography  

A technique for separating or analysing mixtures of gases by chromatography. The apparatus consists of a very long tube containing the stationary phase, a nonvolatile liquid, such as a hydrocarbon ...
gas–liquid chromatography

gas–liquid chromatography  

An analytical method based on the partition chromatographic separation of the components of a mixture through the use of a stationary liquid phase held in place on a solid support ...
gas chromatography infrared

gas chromatography infrared  

(GC-IR)A form of Fourier-transform infrared (FT-IR) used to identify small amounts of gas obtained by gas chromatography. Since functional groups in molecules are characteristic in infrared spectra ...
supercritical fluid chromatography

supercritical fluid chromatography  

A technique that can be regarded as an extension of gas‐liquid (partition) chromatography in which the mobile phase is a relatively dense gas such as CO2 (or SF6, NH3, or ...
chromatography

chromatography  

An analytical technique for separating the components of complex mixtures, based on their repetitive distribution between a mobile phase (of gas or liquid) and a stationary phase (of solids or ...
column chromatography

column chromatography  

The separation of organic compounds by percolating a liquid containing the compounds through a porous material in a cylinder. The porous material may be an ion exchange resin. See chromatography.
frontal chromatography

frontal chromatography  

A technique for chromatographic separation in which the sample (liquid or gas) is fed continuously into the chromatographic bed and only the component that emerges first is obtained in pure form.[...]
chromatogram

chromatogram  

A record obtained by chromatography. The term is applied to the developed records of paper chromatography and thin-layer chromatography and also to the graphical record produced in gas chromatography.
mass spectrometry

mass spectrometry  

An instrument that is used to identify and measure the chemicals that are present in a substance by their mass and charge, based on very small samples. See also gas chromatography‐mass spectrometry.
adsorption

adsorption  

Reference type:
Overview Page
The process by which a thin film of gas or liquid forms on a solid surface. The film does not react chemically with the material on which it is deposited. Compare absorption (1).
GLC

GLC   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
8 words

... or glc abbr. for gasliquid chromatography...

column chromatography

column chromatography   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
40 words

...chromatography any method of chromatography in which the stationary phase is a porous solid contained in a column through which the liquid or gas phase percolates. The principal examples are adsorption chromatography , gel‐filtration chromatography , gasliquid chromatography , and ion‐exchange chromatography...

chromatogram

chromatogram   Quick reference

A Dictionary of Biology (8 ed.)

Reference type:
Subject Reference
Current Version:
2019
Subject:
Science and technology, Life Sciences
Length:
33 words

...chromatogram A record obtained by chromatography. The term is applied to the developed records of paper chromatography and thin-layer chromatography and also to the graphical record produced in gas-liquid chromatography...

carrier gas

carrier gas   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
28 words

...gas the inert gas that forms the mobile phase in gasliquid chromatography or gas‐solid chromatography and that carries the eluted substances in gaseous form into the...

argentation chromatography

argentation chromatography   Reference library

Oxford Dictionary of Biochemistry and Molecular Biology (2 ed.)

Reference type:
Subject Reference
Current Version:
2008
Subject:
Science and technology, Life Sciences
Length:
47 words

...chromatography any method of chromatography in which an adsorbent impregnated with silver nitrate is used to separate lipid classes according to the degree and geometry of their saturation. The technique may be used with either thin‐layer chromatography or column chromatography, or in conjunction with gasliquid chromatography...

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