New developments in preparation and use of standard gas mixtures

• Gaseous reference materials are indispensable tools in analytical work.
• Diffusion and permeation underpin developments in preparing standard gas mixtures.
• Role of thermal decomposition of surface compounds in making desirable gas mixtures.
• Improvements in analytical equipment applied for generation of standard gas mixtures.

Standard gas mixtures are commonly applied in all stages of analytical work related to the analysis of gaseous samples. Numerous techniques for generating standard gas mixtures are in use. In this article, we present new developments regarding the production of standard gas mixtures, with particular focus on improvements in the application of dynamic techniques for generating them. Furthermore, we describe the application of new techniques, such as thermal decomposition or transferring a small amount of gas.