(a) Interpretation: The average flow rate in the column is to be calculated. Concept introduction: The migration through a chromatographic column of a solute zone is made under the influence of the gas flow. On an average, all compound’s molecule spend the same amount of time in the mobile phase. During that time, the molecules move at the same speed along the column as the carrier gas.

BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter 27, Problem 27.22QAP
Interpretation Introduction

(a)

Interpretation:

The average flow rate in the column is to be calculated.

Concept introduction:

The migration through a chromatographic column of a solute zone is made under the influence of the gas flow. On an average, all compound’s molecule spend the same amount of time in the mobile phase. During that time, the molecules move at the same speed along the column as the carrier gas.

Interpretation Introduction

(b)

Interpretation:

The corrected retention volumes for air and the three esters is to be calculated.

Concept introduction:

Retention measurements could make in terms of chart or times, volumes as well as distances. If recorder speeds and flow are constant, the volumes are directly proportional to the charts and time distances.

Interpretation Introduction

(c)

Interpretation:

The specific retention volumes for the three components.

Concept introduction:

The specific retention volume of a solute is defined as the corrected retention volume of the solute per unit mass of stationary phase.

Interpretation Introduction

(d)

Interpretation:

The distribution constants for each ester are to be calculated.

Concept introduction:

The distribution constant is defined as the equilibrium constant for the distribution of an analyte in two immiscible solvents.

Interpretation Introduction

(e)

Interpretation:

The corrected retention volume and retention time for methyl n-hexanoate is to be determined.

Concept introduction:

Retention measurements could make in terms of chart or times, volumes as well as distances. If recorder speeds and flow are constant, the volumes are directly proportional to the charts and time distances.

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