半导体气敏元件在水果保鲜中的应用研究  

A Study on the Application of semiconductor Gas Sensors in Fruit Fresh-Keeping

作　　者：张海峰[1] 钟铁钢[1] 梁喜双[1] 全宝富[1] 

机构地区：[1]集成光电子学国家重点联合实验室吉林大学实验区吉林大学电子科学与工程学院,吉林长春130012

出　　处：《传感技术学报》2009年第12期1848-1852,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助项目资助(60574096)

摘　　要：以溶胶-凝胶法制备SnO2和In2O3纳米晶粉体,以沉淀法制备WO3粉体材料。经过掺杂及表面修饰技术研制出对低浓度乙烯、乙醇、H2S有较高灵敏度、较好选择性和较快响应恢复特性的旁热式管式元件。用制得的三种元件对草莓和香蕉的存储过程进行测试,发现在水果存储过程中,各种气体在不同阶段释放的量是不同的,为水果的成熟度测试仪器的研究创造了条件。SnO2 and In2O3 nano-crystal powders were prepared with sol-gel method, and WO3 powdery mate- rials by precipitation method. Tiny tubular sensors are made by using doping and surface modification technology to give testament with quite high sensitivity, good selectivity and fast response-recovery to low-consistence ethylene, ethanol and H2S. Three newly prepared sensors are used to test strawberries and bananas during the process of storing. It is found that during the store, the release amounts of various gases in different phrases are different, that provides precondition for the study of instruments used to test the maturity of fruits.

关 键 词：水果保鲜 乙烯 气敏元件 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]