Masters Theses


"The object of this thesis is to survey the different types of gas analyses. Subject concentration will be centered on the general and specific instrumental methods of gas analysis. A general account of continuous automatic gas analyzers will be included. References are included for the use of those who desire a more comprehensive knowledge of a specific method of gas analysis.

During recent years, the importance of gas analysis has been considerably increased with the advancement of science and technology. Gas analysis mainly involves the identification, quantitative evaluation and separation of the components of a gaseous mixture. Thus it includes preparation of samples, calibration of apparatus, standardization of solutions, interpretation and application of data and such related operations. Automation in gas analysis has been proved very successful. Recently, the development of continuous gas analyzers has made it possible to have rapid quantitative evaluations. Infra-red and mass spectrometry are examples of modern methods which yield high accuracy for very complex mixtures with a limited sample.

The science of gas analysis is very broad, and to discuss each method would be beyond the scope of this thesis. However, a brief critical survey will be made.

The rapid advancement of instrumental analysis has caused it to replace some of the absorptiometric and other laboratory methods of gas analysis. The latter methods are used for the purpose of calibration and checking the instrument. The modern analytical techniques for quantitative analysis have recently introduced new measuring instruments. Physical properties like thermal conductivity, refractive index, dielectric constant, density, viscosity, etc. have been taken as the basis for reliable and accurate methods, to analyze particular components in a gaseous mixture. The instruments employed here are, however, more expensive than those of classical methods. Instrumental methods of analysis include the following advantages over the classical laboratory methods:

1. The complete analysis can be carried out in a much shorter time, even for a complex mixture.

2. A limited amount of sample, if available, can be analyzed.

3. High accuracy can be achieved for quantitative evaluation of a gaseous mixture.

4. Analysis can be successfully performed on a gas in a continuous flow, so that error due to sampling has been removed.

5. Some instruments can be handled very easily with little training although specialized skill is required for certain instruments.

6. No identification of a constituent during separation is required.

7. The results are more reliable if the maintenance and calibration are checked periodically"--Introduction, pages 1-2.


Scofield, Gordon L., 1925-1986

Committee Member(s)

Best, John, 1925-2015
Remington, Charles R., 1924-2013
Miles, Aaron J.


Mechanical and Aerospace Engineering

Degree Name

M.S. in Mechanical Engineering


Missouri School of Mines and Metallurgy

Publication Date



iv, 61 pages

Note about bibliography

Includes bibliographical references (pages 57-60).


© 1962 Yadvendra V. Desai, All rights reserved.

Document Type

Thesis - Open Access

File Type




Thesis Number

T 1411

Print OCLC #


Electronic OCLC #