Crossword clues for chromatography
The Collaborative International Dictionary
Chromatography \Chro`ma*tog"ra*phy\, n. [Gr. ?, ?, color + -graphy.]
A treatise on colors [archaic]
(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.
Douglas Harper's Etymology Dictionary
Wiktionary
n. (context chemistry English) Any of various techniques for the qualitative or quantitative separation of the components of mixtures of compounds; all characterised by the use of a mobile phase (gas or liquid) moving relative to a stationary phase (liquid or solid) - the differences between the rates of migration of the compounds between the two phases effects the separation.
WordNet
n. a process used for separating mixtures by virtue of differences in absorbency
Wikipedia
Chromatography (; from Greek χρῶμα chroma which means "color" and γράφειν graphein "to write") is the collective term for a set of laboratory techniques for the separation of mixtures. The mixture is dissolved in a fluid called the mobile phase, which carries it through a structure holding another material called the stationary phase. The various constituents of the mixture travel at different speeds, causing them to separate. The separation is based on differential partitioning between the mobile and stationary phases. Subtle differences in a compound's partition coefficient result in differential retention on the stationary phase and thus changing the separation.
Chromatography may be preparative or analytical. The purpose of preparative chromatography is to separate the components of a mixture for more advanced use (and is thus a form of purification). Analytical chromatography is done normally with smaller amounts of material and is for measuring the relative proportions of analytes in a mixture. The two are not mutually exclusive.
Chromatography is a 2004 Post Trip Hop album by Second Person.
This is the band's debut album and all songs were written by Julia Johnson and Mark Maclaine, except "Word for Word" which also credits Ed Webber and Tristan Kajanus, "Demons Die" which also credits Álvaro López and "Divine" which was written by Julia Johnson. The album was recorded, produced and mixed by Mark Maclaine (aka The Silence) at The Silence Corporation Studios, London.
Usage examples of "chromatography".
EGIS uses high-speed gas chromatography and chemiluminescent detection systems to identify explosives residue.
Equipment ranging from simple column chromatography setups to sophisticated liquid scintillation counters sat atop the counter, alongside agar-filled petri dishes and folded nitrocellulose filters.
Under both the common EMIT drug screen and the more sophisticated gas chromatography mass spectrometry, my urine tested positive.
The tube is the size of the Svedberg centrifuge and chromatography equipment combined.
It also included the toxicology section with the gas chromatography and mass spectroscopy graphs.
Gas chromatography followed by electron-bombardment, with spectrometer readings on the resultant mass-fragments.
Attempts to trace the matrix of the samizdat without viewing it from induction on postal codes, e-micros-copíes on the brown padded mailers, immolation and chromatography on the unlabelled cartridge-cases, extensive and maddening interviews of those civilians exposed place the likely dissemination-point someplace along the U.
Dissemination-Grids, screens so hígh-def you might as well be there, cost-effective videophonic conferencing, internal Froxx CD-ROM, electronic couture, all-in-one consoles, Yushityu ceramic nanoprocessors, laser chromatography, Virtual-capable media-cards, fiber-optic pulse, digital encoding, killer apps.
Sickert's grease paints and paints from his studio would not have eluded the scanning electron microscope, the ion microprobe, the x-ray diffractometer, or thin-layer chromatography, to list a few of the resources available now.
Microscopy, infrared spectrophotometry, pyrolysis-gas chromatography, mass spectrometry, x-ray fluorescence, and neutron activation analysis were not required to figure out that much.
The broth of chemicals this produces is then fed into a sophisticated purification system, based mainly on electrophoresis and affinity chromatography, and many valuable substances are extracted.
The tape probably also shows photographs of the chromatography of the different components of the cancer cell genetic constituents.
Once, when she lay down to wait for solvent to wash out a chromatography column, she dove into a most familiar need nightmare.
She had oohed and ahhed over a generous assortment of electron microscopes, incubators, radiation counters, test tubes, petri dishes, titration setups, gas chromatography equipment, MRI scanners, and other apparatus she couldn’.
The instrument that was the closest was the giant gas chromatography unit, and Victor decided that he’.