What are the applications of adsorption in chemicaal analysis ?

Explanation

### Step-by-Step Solution

**Step 1: Understanding Adsorption**
Adsorption is a surface phenomenon where molecules from a gas or liquid adhere to the surface of a solid or liquid. This process is crucial in various chemical analysis techniques.

**Step 2: Chromatographic Analysis**
One of the primary applications of adsorption in chemical analysis is in chromatographic techniques. Chromatography separates components of a mixture based on their different adsorption affinities to a stationary phase. For example, in paper chromatography, substances are separated as they move with a solvent, adhering to the paper at different rates.

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