DEVELOPMENT OF ODOR-SENSING SYSTEM USING AN AUTO-SAMPLING STAGE

被引:27
作者
IDE, J [1 ]
NAKAMOTO, T [1 ]
MORIIZUMI, T [1 ]
机构
[1] TOKYO INST TECHNOL,FAC ENGN,MEGURO KU,TOKYO 152,JAPAN
关键词
D O I
10.1016/0925-4005(93)85399-U
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The present authors previously reported that odours could be discriminated by a sensing system using a quartz-resonator sensor array and neutral-network pattern recognition. In that system, however, the number of samples was limited due to the increase in the number of solenoid valves. A new system for measuring many samples has been developed recently, in which two syringe needles driven by a XYZ mechanical stage are inserted into a vial with a rubber stopper where a sample is poured. A dry air supply through needles carries odourant vapour to a sensor array. This sequence continues repeatedly to measure many samples automatically. By modifying experimental parameters, the mean coefficient of variation can be suppressed to 3.3%. 80 data for 20 typical essential oils have been measured in 320 min by the present system.
引用
收藏
页码:351 / 354
页数:4
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