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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2008. V. 11, N 2. P. 141-147.
Effect of molecular sieves on discrimination efficiency
of a multisensor gas-analysis system
V. Lashkaryov Institute of Semiconductor Physics, NAS Ukraine
41 prospect Nauky, Kyiv 03028, Ukraine
Tel.: (380-44) 525-56-26; Fax: (380-44) 525-83-42; E-mail: kruglenko@yahoo.com
Abstract. We investigated the effect of zeolite at the sample input of a gas-analysis
system (Electronic Nose) on recognition of volatile molecular mixtures. It is shown that
the NaX molecular sieves can remove ketone-type molecules from a gas sample more
efficiently than the NaA molecular sieves. A comparison of recognition of four different
perfumes, both with and without NaA zeolite at the inlet of a multisensor system, showed
that introduction of zeolite reduces responses of all sensors and does not improve
recognition.
Keywords: Electronic Nose, molecular sieve, zeolite.
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