基于室温离子液体的电导型气体传感器  

An ionic conductivity gas sensor based on the room temperature ionic liquid

作　　者：李冬梅[1] 王荣[1] 曹晓卫[1] 王蕴倩[1] 张丹[1] 闫晓慧[1] 徐立群[1] 吴霞琴[1] 

机构地区：[1]上海师范大学化学系,上海200234

出　　处：《化学研究与应用》2009年第6期843-847,共5页Chemical Research and Application

基　　金：国家自然科学基金(20503016);上海市科委启明星基金(07QA14044);湖南大学生物传感与计量学国家重点实验室开放基金资助

摘　　要：本文利用室温离子液体对水或有机蒸气吸收后其离子导电性的改变,研制了以离子液体BmimPF6为敏感材料的电导型气体传感器。考查了BmimPF6用量对传感器响应的影响,测定了传感器对不同浓度的水蒸汽及乙醇、二氯甲烷等饱和有机蒸气的响应。实验结果显示,该传感器具有制作方便、结构简单、稳定性高及线性范围宽等优点,可被用于不同浓度的水或有机蒸气/氮气混合气氛中,水蒸汽或有机蒸气浓度的测定。此外,还针对该传感器对乙醇等不同饱和有机蒸气响应信号与这些有机溶剂的理化性质参数间的定量关系,采用化学计量学方法进行了建模分析。A novel gas sensor was proposed,in which room temperature ionic liquid BmimPF6 was used as the sensing material for the increasing of the ionic conductivity of BmimPFs when it was exposed in humid or organic solvent vapor. The simple - structure sensor showed a good stability and wide linear range for humidity or organic solvent vapor detection. By chemometries, the relationship between the impedance response of the sensor towards different kinds of saturated organic solvent vapors and the physicochemical property constants of the organic solvents was also studied.

关 键 词：离子液体 气体传感器 离子电导性 交流阻抗法 支持向量机回归 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]