Optical sensor for detecting carbon monoxide comprises radiation source, and sensitive layer containing transition metal compound which forms complex with gas to be determined

摘要

An optical sensor (10) comprises a radiation source (12); a sensitive layer (18) containing a transition metal compound which forms a complex with the gas to be determined arranged on a light-permeable substrate (16); and a detector (14). An Independent claim is also included for the production of the sensor comprising applying a solution of a hydrogel, plasticizer and metal salts on a light-permeable substrate; and then applying a sensitive layer in the form of a thin film.