生化与医学用光纤化学传感器研究  

Research on Chemical Sensor by Optical Fiber for Biochemical and Medical Sensing

作　　者：范世福[1] 陈莉[1] 张思祥[1] 孙万新 欧阳国荣[2] 

机构地区：[1]天津大学生物医学工程与科学仪器系,天津300072 [2]军事医学科学院卫生环境医学研究所,天津300050

出　　处：《化学传感器》1998年第1期1-8,共8页Chemical Sensors

摘　　要：本文报导开发了一个生化与医学用多参数光纤生化传感系统。采用发光二极管作光源,硅光电二极管作探测器,以大芯径、大数值孔径的Y型分叉光纤束作传感介质。设计了多种结构的传感探头,可用于环境水质pH、NH_3/NH_4^+、SO_2的检测。根据不同的检测对象。选择不同的指示剂及其固定方法,采用相应的探头结构,配以不同发射波长的LED,仅用一套系统(包括一套光路,一套电路和一套计算机软件系统)即可检测不同的分析参数。整个系统体积小,价格低廉,性能稳定,检测灵敏度达到甚至超过了采用复杂仪器结构的光纤传感器。系统对pH值的响应可达0.01pH;对水中NH_4^+的检测限为2μM;对SO_3~2检测限为2×10^(-4)M。A optical fiber sensing system for biochemical and medical detection was developed. The system was designed for rnultiparamcter sensing to pH,SO2 , NH3/NH4+. In the system, a'Y' optical fiber bundle is as light transmissivc medium, different detecting probes with one optical system, one electronic circuit and one set computer hard/and software are composed. The system is small, cheap but stable and sensitive, its response for pH is about 0. 01pH,the detecting limits arc 2μmol/L for NH4+ in water, 2×10-4mol/L for SO32 in water, respective- ly.

关 键 词：传感器 生物传感器 光纤化学传感器 医学传感器 

分 类 号：O657.1[理学—分析化学] R318.04[理学—化学]