chromatography

Chromatography is a word used to encompass a range of techniques in which mixtures of pure substances are separated into the individual substances by using a mobile phase (usually a liquid or gas) to push the mixture along a stationary phase (usually a solid or liquid coated on a solid). Because the individual substances have different molecular structures, they interact differently with both the stationary and mobile phases, and consequently are "pushed" at different rates by the mobile phase.

Type

Stationary phase

Mobile phase

Gas chromatography (GC)

Polar or non-polar liquid

Helium gas

High Performance liquid Chromatography (HPLC)

Solid

Liquid

Gel Permeation Chromatography (GPC)

 

 

Thin Layer Chromatography (TLC)

Solid on glass or plastic plate

Liquid

  
نویسنده : مریم احمدی - نسیم علی دوست ; ساعت ۱۱:٠٩ ‎ق.ظ روز ۱۳۸٩/۱٠/۱٠
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