4. Stationary phase/mobile phase combinations: retention mechanisms

4.1 General

Solute molecules are considered immobile when in the stationary phase, and moving at the speed of the mobile phase when dissolved in it.

However, attachment to the stationary phase (adsorption or absorption) takes place without the solute molecule losing its identity. A weak bond is formed. The general expression of the chromatography differential equation is : $\frac{δ C_{m}}{δ t} + \frac{u δ C_{m}}{δ z} + ε \frac{δ C_{s}}{δ t} - ε \frac{δ^{2} C_{m}}{δ z^{2}} = 0$

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource. Click here to request your free trial access!

Already subscribed? Log in!

Ongoing reading
Stationary phase/mobile phase combinations: retention mechanisms

Previous
page Fundamental quantities in planar chromatography

Article included in this offer

"Analysis and Characterization"

( 256 articles )

Complete knowledge base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

View offer details

Bibliography

File references [P 1 473] :

(1) - STAHL (E.) - Dünnschicht-Chromatographie. Ein Laboratoriumshandbuch - . Springer-Verlag, Berlin (1962).
(2) - RANDERATH (K.) - Chromatographie sur couches minces - . Gauthier-Villars, Paris (1971)....

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource. Click here to request your free trial access!

Already subscribed? Log in!