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Temperature-Programmed Gas Chromatography

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Temperature-Programmed Gas Chromatography Cover

 

Synopses & Reviews

Publisher Comments:

This book provides a comprehensive up-to-date overview of temperature-programmed gas chromatography (GC). The first part of the book introduces the reader to the basic concepts of GC and the key properties of GC columns. The second part describes the mathematical and physical background of GC. In the third part, different aspects in the formation of a chromatogram are discussed, including retention times, peak spacing and peak widths. Dimensionless heating rate is introduced.

An invaluable reference for any chromatographer and analytical chemist, it provides all the answers to questions like:

* At what temperature does a solute elute in a temperature-programmed analysis?

* How large is the retention factor of eluting solute?

* How wide are the peaks?

* How large is the time distance between two peaks?

* Which parameters affect the reversal of the peak elution order?

* How do all these factors depend on the heating rate?

The use of dimensionless heating rate makes the answers to these questions equally valid for all practical column dimensions, carrier gases and flow rates.

About the Author

Leonid M. Blumberg obtained his academic degrees in electrical engineering and training in mathematics from leading institutions of higher education in St. Petersburg, Russia. In 1977, he immigrated to USA and joined Hewlett-Packard Co. as an electrical engineer. Later he became a resident theoretician responsible for optimization of GC instrumentation and analytical methods. In this capacity, he participated in defining several new GC instruments.

After leaving HP in 1998, Dr. Blumberg founded a consulting company, Fast GC Consulting, and continued the development of theoretical foundation for optimization of conventional, fast and multi-dimensional GC where he is a world leading expert.

Leonid Blumberg authored 50 scientific publications and patented 19 inventions.

Table of Contents

Preface

PART I: Introduction

BASIC CONCEPTS AND TERMS

A COLUMN

Retention Mechanisms

Structures

Operational Modes

Specific and General Properties of a Column

Boundaries

PART II: Background

LINEAR SYSTEMS

Problem Review: Metrics for Peak Retention Time and Width

Chromatograph as an Information Processing System

Properties of Linear Systems

Mathematical Moments of Functions

Properties of Mathematical Moments

Pulses

MIGRATION OF A SOLID OBJECT

Velocity of an Object

Parameters of Migration Path

Relations between Path Parameters and Object Parameters

SOLUTE-LIQUID INTERACTION IN GAS CHROMATOGRAPHY

Distribution Constant and Retention Factor

Chromatographic Parameters of Solute-Liquid Interaction

Alternative Expressions of Ideal Retention Model

Linearized Retention Model

Relations between Characteristic Parameters

MOLECULAR PROPERTIES OF IDEAL GAS

Theory

Gas Viscosity and Related Parameters -

Empirical Formulae

Empirical Formulae for Solute Diffusity in a Gas

FLOW OF IDEAL GAS

Mass-Conserving Flow

Pneumatic Parameters

Relations Between Pneumatic Parameters

PART III: Formation of Chromatogram

FORMATION OF RETENTION TIMES

Solute Mobility

Solute-Column Interaction and Solute Migration

General Equations of a Solute Migration and Elution

Uniform Solute Mobility in Isobaric Analysis

Scalability of Retention Times in Isobaric Analyses

Dimensionless Parameters

Boundaries of Linearized Model

FORMATION OF PEAK SPACING

Static GC Analysis

Closely Migrating Solutes in Dynamic Analysis

Isobaric Linear Heating Ramp and Highly Interactive Solutes

Properties of Generic Solutes

FORMATION OF PEAK WIDTHS

Overview

Local Plate Height

Solute Zone in Non-Uniform Medium

Apparent Plate Number and Height

Thin Film Columns

Thick Film Columns

Temperature-Programmed Analyses

Temperature-Programmed Thin Film Columns

Packed Columns

Scalability of Peak Widths in Isobaric Analyses

Plate Height: Evolution of the Concept

Incorrect Plate Height Theory

Product Details

ISBN:
9783527326426
Author:
Blumberg, Leonid M.
Publisher:
Wiley-VCH
Subject:
Chemistry - Analytic
Subject:
leonid blumberg, temperature-programmed gas chromotography, 
Subject:
!--StartFragment--
Subject:
SPAN
Subject:
Current Practice of Gas Chromatography-Mass Spectrometry, gas c
Subject:
hromatographers, GC/MS
Subject:
!--EndFragment--
Subject:
analytical chemistry
Copyright:
Edition Description:
WOL online Book (not BRO)
Publication Date:
20101228
Binding:
Online electronic file accessible through online networks
Language:
English
Pages:
360
Dimensions:
250 x 15 x 150 mm 24 oz

Related Subjects

Health and Self-Help » Health and Medicine » Medical Specialties
Science and Mathematics » Chemistry » Analytical
Science and Mathematics » Chemistry » General

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