TRACE AMMONIA SENSOR Russian patent published in 2023 - IPC G01N27/12 

FIELD: gas analysis.

SUBSTANCE: invention relates to the detecting devices used to register and measure the content of trace ammonia and can be used for environmental monitoring. Ammonia trace measurement sensor comprises a semiconductor base and a substrate. The semiconductor base is made of a polycrystalline film of a solid solution of the composition (CdS)_0.19(CdTe)_0.81, and the electrode pad of the piezoelectric resonator serves as the substrate.

EFFECT: determining the ammonia content with a sensitivity several times higher than the sensitivity of known sensors.

1 cl, 3 dwg