Electronic Nose for the Determination of Formaldehyde in Air

Abstract

Abstract: This paper reports a portable electronic nose(e-nose) for the selective determination of formaldehyde in the presence of interference gases.The e-nose is composed of an array of four sensors, a signal regulating circuit, an electronic olfactory and a display.The fuzzy neural network(FNN) is applied to the analysis of the sensor responses.The reported results are satisfied with a pass rate of 81.3% within the permitted relative error in the mass concentration range of 0.001-0.25 mg/Land have no recognition error for the formaldehyde in the presence of interference gases.The enose is reliable for the recognition and determination of formaldehyde concentration in air.

Key words: Electronic nose, Fuzzy neural net work(FNN), Formaldehyde

CLC Number:

O657

TrendMD:

ZHANG Liang-Yi, WEN Li-Jing, ZHOU Feng, ZHANG Song, YANG Peng-Yuan . Electronic Nose for the Determination of Formaldehyde in Air[J]. Chem. J. Chinese Universities, 2003, 24(8): 1381.

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Electronic Nose for the Determination of Formaldehyde in Air

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