基于Nafion-结晶紫传感膜的光纤湿度传感器研究  

Fabrication of Relative Humidity Optical Fiber Sensor Based on Nafion Crystal Violet Sensing Film

作　　者：金兴良[1,2] 李伟[1] 孙大海[1] 庄峙厦[1] 王小如[1] 

机构地区：[1]厦门大学化学化工学院现代分析科学教育部重点实验室 [2]深圳市海洋与渔业环境监测站,广东深圳518049

出　　处：《光谱学与光谱分析》2005年第8期1328-1331,共4页Spectroscopy and Spectral Analysis

基　　金：国家高科技"863"计划(818-09-07)资助项目

摘　　要：通过研究基于荧光和可见光吸收的两种湿度传感方法, 从数种湿度分子探针中优选出结晶紫为分子识别器, 包埋于Nafion溶胶中, 制备成基于可见光吸收原理的光纤化学湿度传感膜. 该传感膜与电荷耦合二极管阵列检测器等构成的光纤湿度传感器, 于640 nm波长处对30%～100%范围内的相对湿度(relative humidity, RH)具有较快的响应时间(＜2 min)、较高的灵敏度(≤5%RH)、选择性和良好的可逆性(RSD≤2.6%).With two kinds of sensing methods for relative humidity based on fluorescence and visible absorption respectively, crystal violet was opted as the molecule probe for humidity. The optical chemical sensing film for humidity was prepared when crystal violet was embedded in the Nation gel. The relative humidity sensor was fabricated after the sensing film had been coupled with other components, such as optical fiber and detector, which possessed short response time （ 〈2 min）, high sensitivity （≤5 % RH）, wide dynamic range （30%-100%） and goot reversibility （RSD≤2.6%） for relative humidity at 640 nm wavelength.

关 键 词：Nation-结晶紫 膜 湿度 光纤传感器 

分 类 号：O657.3[理学—分析化学]