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A Study on a Multichannel Ordor Sensor Based on Color Information

基于颜色信息的多通道气味传感器的研究

基本信息

批准号：
13650871
负责人：
OHGA Kazuya
金额：
$ 2.3万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

The aim of this research is to construct a multichannel odor-sensing system based on the color changes of dyes upon contact with odor gases. The response elements were composed of an array of dyes, 5,10,15,20-tetraphenyl-21H,23H-porphin and the Cu(II),Zn(II),Mn(II),Co(II),Fe(II) complexes, a Reichardt's dye, pH indicators (Thymol Blue, Methyl Orange, Methyl Red, Phenol Red, Phenolphthalein and Alizarin Yellow) and acceptors of charge transfer complexes, adsorbed on C18 and C2 reverse-phase TLC plates and a silica-gel one ; color images of the dye elements obtained with a scanner were analyzed to give the gray levels of red, green and blue components. Differences between the gray levels before and after exposure to various kinds of volatile organic compounds suggested that the proposed sensing system was capable of detecting target gases even in the presence of a large quantity of water vapor, and thus was applicable to many odor gases without any pretreatment. A principal component analysis discriminated between citrus fruits, kabosu, lemon, navel orange and grapefruits, and between regular coffees, canned coffees with sugar and canned black coffees, using the gray level differences of some pH-indicator image components as multivariable data. An optical fiber having an Alizarin Yellow/polyvinylpyrrolidone at the cladding part and a thin gold or silver film on an end surface was used as a sensing element; a decrease in the signal intensity of halogen-lamp light reflected from the fiber was observed at around 630 nm when the fiber was exposed to principal odor components of citrus fruits, linalyl acetate and linalool.

本研究的目的是构建一种基于染料与气味气体接触时颜色变化的多通道气味传感系统。响应元件由5，10，15，20-四苯基-21H，23H-卟啉和铜(II)，锌(II)，锰(II)，钴(II)，铁(II)络合物，Reichardt‘s染料，pH指示剂(百里酚蓝，甲基橙，甲基红，酚红，酚酞和茜素黄)和电荷转移络合物的受体组成，吸附在C18和C2反相薄层板和硅胶板上，用扫描仪分析得到的染料元素的彩色图像，给出了红、绿和蓝组分的灰度。接触各种挥发性有机化合物前后灰度级的差异表明，该传感系统即使在大量水蒸气存在的情况下也能检测到目标气体，因此无需任何预处理即可适用于多种恶臭气体。主成分分析区分柑橘、卡波苏、柠檬、脐橙和葡萄柚，区分普通咖啡、加糖罐头咖啡和罐装黑咖啡，以pH指示器图像分量的灰度差异作为多变量数据。使用在包层部分具有茜素黄/聚乙烯吡咯烷酮并且在端面具有薄金或银膜的光纤作为传感元件；当光纤暴露于柑橘类水果的主要气味成分、乙酸芳樟酯和芳樟醇时，观察到从光纤反射的卤素灯光的信号强度在约630 nm处减弱。