A Multielement Evolved Gas Analysis Technique
A Multielement Evolved Gas Analysis Technique

Author: LL. de Vos

Publisher:

Published: 1988

Total Pages: 5

ISBN-13:

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A multielement evolved gas analysis technique for the simultaneous determination of up to eight elements is described. The results obtained in one analysis are a quantitative composition in terms of the elements carbon (C), hydrogen (H), nitrogen (N), sulfur (S), chlorine (Cl), bromine (Br), iodine (I) and fluorine (F), and a distribution of these elements as a function of the evolution temperature. Determinations for which the system is used include the amount, composition and volatility of, for instance, kerogen materials, the amount of fixed carbon (coke) on catalysts, or the thermal stability of polymers. The instrument has become an indispensable tool in the screening of materials, in compositional analysis, and in kinetic studies.

Evolved Gas Analysis
Evolved Gas Analysis

Author: Nicolas Fedelich

Publisher: Carl Hanser Verlag GmbH Co KG

Published: 2019-10-07

Total Pages: 214

ISBN-13: 1569908109

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volved gas analysis (EGA) describes analysis of gases or volatile components evolved from a sample undergoing thermal analysis. It is often used in direct combination with chemical analysis techniques such as gas chromatography, IR spectroscopy, or mass spectrometry, and/or with thermogravimetric analysis (TGA), i.e. measuring the change in weight of the sample under controlled conditions. This book focuses on these so-called "hyphenated techniques" (EGA-TGA, TGA-GC/MS, etc.), which allow a great deal of chemical information about a sample to be revealed quickly and conveniently. The methods are highly applicable to polymer/plastics samples, but also to other materials including pharmaceuticals, biomass, and various organic and inorganic compounds. Examples of applications related to all these material types are provided in this book. This book provides practical help to anyone interested in the practical aspects of EGA-TGA, including those working in testing laboratories and their clients.

Proceedings
Proceedings

Author: Institute on Coal Mining Health, Safety and Research

Publisher:

Published: 1991

Total Pages: 152

ISBN-13:

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Trace Analysis By Mass Spectrometry
Trace Analysis By Mass Spectrometry

Author: Arthur J. Ahearn

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 475

ISBN-13: 0323140734

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Trace Analysis by Mass Spectrometry deals with trace analysis of solids and liquids by mass spectrometric techniques. Topics include the physics and techniques of electrical discharge ion sources, transmission of ions through double focusing mass spectrometers, and detection and measurement of ions by ion-sensitive plates. The ion sources used are principally electrical discharge type sources. This book is comprised of 14 chapters. The first several chapters focus on the basic physics of electrical discharge ion sources, double focusing mass spectrometry, and the measurement of arrays of mass resolved ion beams by electrical detection methods and with ion sensitive emulsions. The discussion then shifts to the problem of obtaining the chemical composition of the recorded mass resolved ion sample and relating this composition to that of the original sample. The chapters that follow describe specific techniques for analyzing special samples such as insulators, powders, microsamples, biological materials, reactive and low melting point substances, radioactive materials, and gases in solids. The remaining chapters include the use of laser ion sources in the analysis of solids and the analysis of surfaces particularly with sputter ion sources. This book will be of interest to students and practitioners of physics and chemistry.