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Untitled_1
Flashcards do conjunto (10)
- 1The time interval in which the analyte is injected onto a column and the appearance of its peak at the other end of the columnRetention time
- 2A source of band broadening in a column in which a solute diffuses from the concentrated center to the more dilute regions on either side; this movement is thus toward and opposed to the direction of flow of the mobile phaseLongitudinal diffusion
- 3A phenomena in which molecules of an analyte reach the column at different times as a consequence of traveling through the column by pathways that differ in lengthEddy diffusion
- 4The phase that moves over or through and immobilized phase (stationary phase) that is fixed in place in a column or on the surface of a flat plateMobile phase
- 5The solid or liquid which is fixed in place in the column or plate on which the mobile phase then passes over or throughStationary phase
- 6(K) The ratio of the concentration of the analyte in the stationary phase to its concentration in the mobile phase when equilibrium exists between the two phasesDistribution constant
- 7=k' is defined by the definition k' =KaVs/Vm where KA is the constant for species A and VS and VM are the volumes of the stationary phase and mobile phase respectivelyRetention factor
- 8The fresh mobile phase (solvent) that carries the analyte through the columnEluent
- 9The separation of a mixture of compounds based upon the differential partitioning of various analytes species between a mobile phase and a stationary phaseChromatography
- 10A process in which species are "washed" through a chromatographic column by additions of fresh solventElution
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- Instrumental Analysis Exam 3 Flashcards FlashCards sobre Untitled_1, criado por crystalquattol em 29-04-2013.
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