Chapter 23, Problem 23.39P

Interpretation Introduction

Interpretation:

The given statements in first list has to be matched with second list.

1. Depends on radius of open tubular column.

2. Not present in an open tubular column.

3. Depends on length and radius of connecting tubing.

4. Increases with diffusion coefficient of solute.

5. Increases with thickness of stationary phase film.

A Multiple paths

B Longitudinal diffusion

C_m Equilibration time in mobile phase

C_s Equilibration time in stationary phase

EC Extra column band broadening

Concept introduction:

Van Deemter equation:

This equation explains how the plate height is affected by the column and flow rate

$\begin{array}{l}\text{H}\approx \text{A}\text{+}\text{}\frac{\text{B}}{{\text{u}}_{\text{x}}}\text{+}{\text{Cu}}_{\text{x}}\\ \text{Where,}\\ \text{H}\text{-}\text{plate}\text{height}\\ \text{A,}\text{B,}\text{C}\text{-}\text{constants}\text{for}\text{a}\text{given}\text{column}\\ {\text{u}}_{\text{x}}\text{-}\text{linear}\text{velocity}\end{array}$