Abstract
Many techniques have been developed to measure odor substances. However most of these methods are based on using aqueous solutions. Many odor substances, specifically at low density situation are difficult to dissolve into water. Finding the way how to absorb odor substances to get the highest concentration solutions within a limited time are key problems for olfactory systems. The Mist-Cyclone system has been developed to obtain a high concentration solution by blowing odor substances contained air mixture through the mist of water which has a huge contact surface generated by the ultrasonic transducer, and then separating the liquid from two-phase fluid by a cyclone unit. Eugenol and 2, 4-DNT were used as the odor substance in our experiments. Water solution samples were captured from 50 litters of Eugenol/air mixture gas at 0.13 ppm or DNT/air mixture gas at 0.06 ppm, and analyzed with GC-FID. As a result, Eugenol or DNT was detected respectively from the sample. By using with more sensitive method, it would be possible to detect or distinguish odor substance with much less amount of solutions.
