CATION EMISSION TYPE HALOGENATED HYDROCARBON GAS DETECTING ELEMENT

摘要

Disclosed is a cation emission type halogenated hydrocarbon gas detecting element comprising a cation source (3), a heating means (2) and an ion collector electrode (1), which is characterized in that said cation source (3) comprises beta -A l 2O3. By employing beta -A l 2O3, the detecting element can be more miniturized and can work at lower temperature than a conventional cation emission type electrode comprising the cation source made of steatite.