Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various techniques for the separation of complex mixtures that rely on the differential affinities of substances for a mobile (gas or liquid) medium and for a stationary adsorbing (liquid or solid) medium through which they pass, such as paper, gelatin, or silica.
from The Century Dictionary.
- noun A treatise on colors.
from the GNU version of the Collaborative International Dictionary of English.
- noun archaic A treatise on colors.
- noun (Chem.) an analytical and preparative technique for separating substances by differences in their selective adsorption to solids, by passing a liquid over the solid, to which the substances to be separated have usually been adsorbed in a preliminary step. The major variations are column chromatography, in which the substances to be separated are adsorbed to a column with any of a wide variety of adsorbing solids in powdered or granulated form; paper chromatography, in which the solids are applied as a spot at one end of a strip of absorbent paper (such as filter paper), and the liquid is percolated through the paper by capillary action; and thin-layer chromatography (TLC), which is similar to paper chromatography, but the adsorbent material is, instead of paper, a thin layer of finely powdered material, such as cellulose or silica, on a backing of glass or plastic, called a TLC plate. A modern version of
column chromatography is high-performance liquid chromatography, usually referred to as HPLC.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry Any of various
techniques for thequalitative orquantitative separation of thecomponents ofmixtures ofcompounds ; all characterised by the use of amobile phase (gas orliquid ) movingrelative to astationary phase (liquid orsolid ) - thedifferences between the rates ofmigration of the compounds between the two phaseseffects the separation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a process used for separating mixtures by virtue of differences in absorbency
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Chromatography was first developed more than a century ago and solid state gas chromatography is more than 60 years old.
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Essentially, chromatography is a filtering process that allows distinct compounds or molecules to be separated by molecular size and weight.
Richard Kuhn and the Chemical Institute: Double Bonds and Biological Mechanisms 2010
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High-fructose corn syrup is made through a process called chromatography, or a distillation of the fructose, in which it is exposed to a series of enzymes to convert cornstarch to 90 percent fructose.
The Daily Barometer 2010
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High-fructose corn syrup is made through a process called chromatography, or a distillation of the fructose, in which it is exposed to a series of enzymes to convert cornstarch to 90 percent fructose.
The Daily Barometer 2010
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Screening for high-oleic acid by any breeding programs was done by measuring fatty acid content of the seeds by using gas chromatography, which is a destructive method.
Clovis News Journal : News By Naveen Puppula: AgSense 2010
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Traditionally, these analyses are done with gas chromatography, which is expensive, time-consuming and requires bulky devices and skilled analysts.
Science News / Features, Blog Entries, Column Entries, Issues, News Items and Book Reviews 2008
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This process of separating molecules by size and weight is called chromatography ” so named because it was first used in the laboratory to separate colored dyes.
In the Primordial Soup Flannery, Tim 2000
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They analyze a wide variety of chemical compounds, using testing methods such as chromatography or spectroscopy.
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Have a thorough understanding of laboratory procedures and laboratory skills, the practices, principles, and theory of specific disciplines such as chromatography, raw material analysis, laboratory instrumentation, etc (essential)
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Have a thorough understanding of laboratory procedures and laboratory skills, the practices, principles, and theory of specific disciplines such as chromatography, raw material analysis, laboratory instrumentation, etc (essential)
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