Metrological and performance characteristics of a metal-oxide sensor high-selective to ammonia in the presence of methane, carbon monoxide, and water vapors are presented. The specific feature of the design consists in using pulsed sensor heating as the main factor for improved selectivity to ammonia. The ammonia threshold achieved during the pulse-type temperature modulation is 5 × 10 −4 % vol.
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Samotaev et al. (2013) studied this question.
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