isocratic elution

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• isocratic flow — noun In liquid chromatography, a mobile phase of constant composition. In contrast to this is the so called gradient elution , which is a separation where the mobile phase changes its composition during a separation process. Operating an… …   Wiktionary

• High-performance liquid chromatography — An HPLC. From left to right: A pumping device generating a gradient of two different solvents, a steel enforced column and an apparatus for measuring the absorbance. Acronym HPLC Classification Chromatography …   Wikipedia

• Temperature-responsive polymer — A temperature responsive polymer is a polymer which undergoes a physical change when external thermal stimuli are presented. The ability to undergo such changes under easily controlled conditions makes this class of polymers fall into the… …   Wikipedia

• Displacement chromatography — is a chromatography technique in which a sample is placed onto the head of the column[n 1] and is then displaced by a solute that is more strongly sorbed than the components of the original mixture. The result is that the components are resolved… …   Wikipedia

• High performance liquid chromatography — Infobox chemical analysis name = High performance liquid chromatography caption =A HPLC. From left to right: A pumping device generating a gradient of two different solvents, a steel enforced column and an apparatus for measuring the absorbance.… …   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

• Hydrophilic interaction liquid chromatography — HILIC (HydrophILic Interaction Chromatography or Hydrophilic Interaction LIquid Chromatography) is a version of normal phase liquid chromatography. The name was suggested by Dr. Andrew Alpert in his 1990 paper on the subjectcite journal | last =… …   Wikipedia

• Reversed-phase chromatography — (RPC) includes any chromatographic method that uses a non polar stationary phase. The name reversed phase has a historical background. In the 1970s most liquid chromatography was done on non modified silica or alumina with a hydrophilic surface… …   Wikipedia