Device and method for detecting sulfur dioxide at high temperatures

摘要: The present invention relates to a method for selectively detecting and/or measuring gaseous SO 2 at temperature of least 500° C., the involving: (i) providing -detecting device including an oxygen ion-conducting substrate having on its surface three electrodes comprising first, second, and third electrode; (ii) driving starting current specified magnitude temporal variation between first second electrodes; (iii) contacting with -containing sample while maintaining any current, wherein said causes change in electrical conductance device; (iv) based property related or indicative electrodes, measured conductance.