An odor detection by measuring the QCM resistance

Abstract

The method for detecting odor samples using mono-channel QCM LB film sensor is described. The sensing film deposited on the QCM electrode was DOABr combined by PVSK as an under layer. The odor sensor was able to detect the usual frequency shift and more the viscosity of odor samples by measuring resistance shift of QCM. Single odor samples, such as benzene, hexane and chloroform can be detected by these parameters. Mixed odor samples could be also detected by adding the response time measurement.