Gas analyzer and method of gas analysis

A gas analyzer comprising:

• a separation column;
• a surface acoustic wave device;
• a surface acoustic wave measuring means;
• and
• an analysis means;
• the separation column being configured so as to pass a sample gas together with a carrier gas through the inside thereof, and having different pass times depending on the kinds of components of the sample gas;
• the surface acoustic wave device comprising:
• a base material with an annularly continuous annular surface formed of at least a part of a spherical surface;
• a surface acoustic wave generating means capable of generating a surface acoustic wave that propagates along the annular surface;
• and
• one or more reaction parts provided along the annular surface so as to change a predetermined physical quantity of the surface acoustic wave propagating along the annular surface generated by the surface acoustic wave generating means, in response to one or more kinds of components of the sample gas;
• the surface acoustic wave device being arranged so that the sample gas passing through the separation column reacts with the reaction parts;
• the surface acoustic wave measuring means measuring the physical quantity of the surface acoustic wave propagating along the annular surface generated by the surface acoustic wave generating means;
• and
• the analysis means analyzing the components of the sample gas based on the physical quantity measured by the surface acoustic wave measuring means.