thin-layer chromatography
11thin-layer chromatography (TLC) — Type of chromatography using as the stationary phase a thin layer (0.01 inch [0.25 mm]) of a special finely ground matrix (silica gel, alumina, or similar material) coated on a glass plate or incorporated in a plastic film. Solutions of the… …
12thin-layer chromatography — (TLC) A procedure for separating compounds by spotting them on a glass plate coated with a thin (about 0.01 inch) layer of silica or alumina, and “developing” the plate by allowing a solvent to move upward by capillary action. TLC is… …
13thin-layer chromatography — noun A form of chromatography in which the solid phase is silica gel or a similar inert material supported on a glass plate. Syn: TLC …
14thin-layer chromatogram — noun see thin layer chromatography …
15Chromatography — 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… …
16chromatography — 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… …
17Chromatography — 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… …
18chromatography — 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… …
19chromatography — /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… …
20layer — layerable, adj. /lay euhr/, n. 1. a thickness of some material laid on or spread over a surface: a layer of soot on the window sill; two layers of paint. 2. bed; stratum: alternating layers of basalt and sandstone. 3. a person or thing that lays …
