INTERFERENCE METHODS FOR MEASURING THE CONCENTRATION OF AMMONIA VAPOR WITH A SENSOR BASED ON SILICA PARTICLES
A. S. Kuchyanov, V. A. Sorokin, P. A. Chubakov, S. L. Mikerin
Institute of Automation and Electrometry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: sensor, ammonia, interference, correlation
Abstract
Two methods for measuring the optical response to ammonia of a sensor based on film opal-like silica materials are proposed, and the corresponding devices have been developed. The explanation of the selective response of the sensor to ammonia associated with its high solubility in water has been experimentally confirmed. Experimental results have been obtained on operation of such a sensor with ammonia concentrations from several ppm to 20vol.% with fast response.
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