Introduction

Chromatography is a vital analytical technique used to separate, identify, and quantify components in a mixture. Thin Layer Chromatography (TLC) employs a stationary phase coated on a glass or plastic plate, and a solvent to carry the mixture through capillary action, revealing distinct spots for different compounds.

Liquid Chromatography (LC) involves a liquid mobile phase passing through a column packed with solid stationary phase particles, facilitating the separation of components based on their interactions with the stationary phase.

High-Pressure Liquid Chromatography (HPLC) is an advanced form of LC, utilizing high pressure to push the mobile phase through a densely packed column, achieving high-resolution separations and faster analysis times. Gas Chromatography (GC) separates volatile compounds using an inert gas as the mobile phase and a liquid or solid stationary phase, often coupled with detectors like mass spectrometers for detailed analysis.

Ion Chromatography (IC) specializes in the separation of ions and polar molecules, using ion-exchange resins and eluent solutions to achieve precise and efficient separations. Each chromatography technique is indispensable in fields such as pharmaceuticals, environmental monitoring, and biochemical research, offering tailored solutions for complex analytical challenges.

Objectives

After going through this unit you will be able to:

1. Define A. Thin Layer chromatography B. Liquid Chromatography C. High Pressure Liquid Chromatography  D. Gas Chromatography E. Ion chromatography.