chromatography

n.
any of several techniques for separating the components of a mixture by selective absorption. Two such techniques are quite widely used in medicine, for example to separate mixtures of amino acids. In one of these, paper chromatography, a sample of the mixture is placed at the edge of a sheet of filter paper. As the solvent soaks along the paper, the components are absorbed to different extents and thus move along the paper at different rates. In column chromatography the components separate out along a column of a powdered absorbent, such as silica or aluminium oxide.

The new mediacal dictionary. 2014.

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  • Chromatography — Chro ma*tog ra*phy, n. [Gr. ?, ?, color + graphy.] 1. A treatise on colors [archaic] [1913 Webster] 2. (Chem.) an analytical and preparative technique for separating substances by differences in their selective adsorption to solids, by passing a… …   The Collaborative International Dictionary of English

  • chromatography — [krō΄mə täg′rə fē] n. [ CHROMATO + GRAPHY] any of various processes of chemical analysis in which the constituents of a mixture are separated into distinct bands or spots on an adsorbent material: see GAS CHROMATOGRAPHY …   English World dictionary

  • chromatography — chromatography. См. хроматография. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • chromatography — 1731, from chromato , Latinized comb. form of Gk. khroma (gen. khromatos) color (see CHROMA (Cf. chroma)), denoting color or chromatin + GRAPHY (Cf. graphy) …   Etymology dictionary

  • chromatography — ► NOUN Chemistry ▪ a technique for the separation of a mixture by passing it through a medium in which the components move at different rates. DERIVATIVES chromatogram noun chromatograph noun chromatographic adjective. ORIGIN from Greek khr ma… …   English terms dictionary

  • Chromatography — Pictured is a sophisticated gas chromatography system. This instrument records concentrations of acrylonitrile in the air at various points throughout the chemical laboratory. Chromatography (from Greek χρῶμα chroma color and γράφειν graphein to… …   Wikipedia

  • chromatography — chromatographer, n. chromatographic /kreuh mat euh graf ik, kroh meuh teuh /, adj. chromatographically, adv. /kroh meuh tog reuh fee/, n. Chem. the separation of mixtures into their constituents by preferential adsorption by a solid, as a column… …   Universalium

  • chromatography — The separation of chemical substances and particles (originally plant pigments and other highly colored compounds) by differential movement through a two phase system. The mixture of materials to be separated is percolated through a column or… …   Medical dictionary

  • chromatography — /kroʊməˈtɒgrəfi / (say krohmuh togruhfee) noun Chemistry 1. the separation of mixtures into their constituents by preferential absorption by a solid such as a column of silica (column chromatography), or a thin film of silica (thin layer… …   Australian English dictionary

  • chromatography — chromatografija statusas T sritis Standartizacija ir metrologija apibrėžtis Cheminės analizės būdas, kuriuo iš cheminių junginių mišinio arba ekstrakto, judančio per paviršinį gėriklį (pvz., molį arba popierių), junginiai yra atskiriami kaip… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

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