Patent ID: 7074319
Filing Date: 2006-07-11
Classification: G01N,Y02A

Abstract:
1. An ammonia gas sensor, comprising: a reference electrode; an ammonia selective sensing electrode comprising the reaction product of a main material selected from the group consisting of vanadium, tungsten, molybdenum, vanadium oxides, tungsten oxides, molybdenum oxides, and combinations comprising at least one of the foregoing main materials; and an electrically conducting material selected from the group consisting of bismuth, lead, lanthanum, strontium, calcium, copper, gadolinium, neodymium, yttrium, samarium, magnesium, magnesium oxide, bismuth oxide, lead oxide, lanthanum oxide, strontium oxide, calcium oxide, copper oxide, gadolinium oxide, neodymium oxide, yttrium oxide, samarium oxide, and combinations comprising at least one of the foregoing; and an electrolyte disposed between and in ionic communication with the sensing electrode and the reference electrode.