Chapter 27, Problem 27.27QAP

Interpretation Introduction

(a)

Interpretation:

The effect of increasing the mass of stationaryphase relative to the packing masson the plate height needs to be explained.

Concept introduction:

As the number of plates increases in a GC column, the resolution would also increase. For increasing the number of plates, the height of the plates has to be decreased for maintaining a high resolution. The van Deemter equation is used for defining the effect of different parameters on the height of plate.

Interpretation Introduction

(b)

Interpretation:

The effect of decreasing the rate of sample injection on the plate height needs to be explained.

Concept introduction:

The resolution will increase as the number of plates increases in the GC column. For maintaining a high resolution and increasing the number of plates, the height of the plates must be decreased. For defining the effect of different parameters on the height of plate, van Deemter equation is used.

Interpretation Introduction

(c)

Interpretation:

The effect of increasing the injection port temperature on the plate height needs to be explained.

Concept introduction:

In GC column resolution will increases as the number of plates increases.For maintaining a high resolution and increasing the number of plates, the height of the plates has to be decreased. For defining the dependencies of various parameters on the height of plate, van Deemter equation is used.

Interpretation Introduction

(d)

Interpretation:

The effect of increasing the flow rate on the plate height needs to be explained.

Concept introduction:

As the number of plates increases in a GC column, the resolution would also increase. For increasing the number of plates, the height of the plates has to be decreased for maintaining a high resolution. The van Deemter equation is used for defining the effect of different parameters on the height of plate.

Interpretation Introduction

(e)

Interpretation:

The effect of reducing the particle sizeof the packing on the plate height needs to be explained.

Concept introduction:

The resolution will increase as the number of plates increases in the GC column. For maintaining a high resolution and increasing the number of plates, the height of the plates must be decreased. For defining the effect of different parameters on the height of plate, van Deemter equation is used.

Interpretation Introduction

(f)

Interpretation:

The effect of decreasing the column temperature on the plate height needs to be explained.

Concept introduction:

In GC column resolution will increases as the number of plates increases. For maintaining a high resolution and increasing the number of plates, the height of the plates has to be decreased. For defining the dependencies of various parameters on the height of plate, van Deemter equation is used.