溶胶凝胶型光纤氧传感器的研制  

Optical Oxygen Sensor Based on a Sol-Gel Encapsulation Method

作　　者：冉良骥[1] 吕太平[1] 向仕学 

机构地区：[1]四川大学华西药学院药物分析学教研室,成都610041 [2]四川省防疫站

出　　处：《四川大学学报（医学版）》2003年第2期337-340,共4页Journal of Sichuan University(Medical Sciences)

摘　　要：目的　结合溶胶凝胶制膜法和光纤传导技术制备性能良好的氧传感器。方法　采用四乙氧基硅烷(TEOS)和甲基 -三乙氧基硅烷 (MTEOS)共水解制膜 ,并对制膜方法进行优化 ,结合 Stern- Volmer曲线的绘制及样品的测定 ,对方法进行整体的验证。结果　制备的光纤氧传感器在较大的浓度范围内 (气态氧 0 %～ 10 0 %、溶解氧 0 .5 5～ 33.1mg/ L,2 9℃ ) ,测定结果有良好的线性相关 (r>0 .9990 ) ,且响应迅速 (T95<2 0 s) ,抗干扰能力强 ,稳定性较好。通过与碘量法对比 ,发现两种方法的测定结果无显著性差异。结论　为在复杂。Objective To develop oxygen sensor by use of sol gel encapsulation method and optical fiber technology. Method Organically modified sol gel film was prepared by hydrolyzing tetraethoxysilane (TEOS) and methyltriethoxysilane (MTEOS) together, and film processing conditions were optimized. Overall validation of the method was carried out by building Stern Volmer plots and determining the concentration of oxygen in samples. Results The optical fiber oxygen sensor was linear in a wide range (oxygen gas: 0% 100% and dissolved oxygen: 0.55 mg/L 33.1 mg/L 29℃, r >0.9990) and had a fast response time (T95<20 second). Signals were steady and not easily interfered. The results of measuring oxygen in samples by using the oxygen sensor and iodimetry respectively were compared and no significant difference was found. Conclusion The sensor system is applicable to continuous measure ment of gas phase oxygen and dissolved oxygen on line in a complex rigorous conditions.

关 键 词：溶胶凝胶 荧光猝灭 光纤 氧传感器 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]