Sagami Chemical Research Center

Mitsutoshi Tanimoto

Hiromichi Uehara

Yasuharu Ijuin

Naotake Morikawa

Tomoo Saito

Masayoshi Yasuda

Akio Hikita

Masaru Fukuyama

A response characteristics of a microwave spectroscopic measuring system is remarkably improved by supplying a carrier to a continuously flowing sample containing a polar substance to be measured quantitatively. The carrier contains a compound having at least similar chemical form to that of the polar substance.

Method of improving response characteristics of gas sensor using

A gas sample including polar molecules is introduced into a cavity (an internal space) of a cavity resonator, the cavity being provided therein with a Stark electrode which is vertically of a microwave electric field resonating at the microwave frequency, and a direct current Stark voltage which is applied to the Stark electrode together with a sine wave modulation voltage is swept, resulting in a microwave absorption spectrum representing the polar molecules in the gas sample. The resonance frequency of the cavity may be made variable to observe various polar molecules individually.

Gas analyzing method and apparatus for performng the same

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Sagamihara, Japan

Mitsutoshi Tanimoto