摘要
气态氧和溶解氧的测定在医学、工业分析、环境监测等领域中具有重要的意义。由于光纤氧传感器具有本质安全、灵敏度高、检测精度高、响应时间快、不受电磁干扰等优点，并可对危险环境中的气态氧和溶解氧进行远程、连续和在线监控，近年来，光纤氧传感器及其敏感材料的研究受到了人们的极大关注。本论文采用热聚法(包括载体共价法和载体共价-交联法)制备氧敏感材料以及在此基础上制备了对葡萄糖敏感的敏感材料，利用氧测试实验或分光光度计对氧敏感材料进行性能评价，研究氧敏感材料在光纤气态氧传感器和光纤溶解氧传感器中的应用以及氧敏感材料在光纤葡萄糖传感器中的应用。
本论文主要包括以下五个方面的内容：
(1)载体共价法制备氧敏感材料：通过红外光谱、扫描电镜图谱和氧测试实验探讨该氧敏感材料的制备机理，通过氧测试实验评价该氧敏感材料的氧敏感性和稳定性，同时研究了各种因素对该氧敏感材料性能的影响
(2)载体共价—交联法制备氧敏感材料：通过红外光谱、扫描电镜图谱和氧测试实验探讨该氧敏感材料的制备机理，通过氧测试实验和分光光度计评价该氧敏感材料的氧敏感性和稳定性，同时研究了各种因素对该氧敏感材料性能的影响
(3)氧敏感材料在光纤气态氧传感器中的应用：该传感器的响应时间为10s，检测下限为5ppm，检测精度为0.5％，具有较好的重复性和稳定性，迟滞较小，使用寿命至少为1年，适合各种环境下气态氧浓度的检测。
(4)氧敏感材料在光纤溶解氧传感器中的应用：该传感器的响应时间为20s，重复性和稳定性较好，不受溶液pH值的影响，但受水温影响较大，只能用于低温溶解氧的检测。
(5)氧敏感材料在光纤葡萄糖传感器中的应用：采用热聚法制备氧敏感材料并在此基础上制备了生物敏感材料——葡萄糖氧化酶玻璃微珠。该生物敏感材料具有较好的生物活性，可用于检测溶液中葡萄糖浓度。
The detection of the dissolved oxygen and the gaseous oxygen is very important in many fields such as medicine, industrial analysis and environmental monitoring. Therefore, the researches of fiber optical oxygen sensors have gotten attention of people in recent years. Fiber optic oxygen sensor have many advantages such as intrinsic safety and high sensitivity, high detection precision, quick response, anti-disturbance of electromagnetism, and it can be used for long-distance, successive and on-line monitoring of dissolved oxygen and the gaseous oxygen in dangerous environment. In this thesis, the oxygen sensitive materials and glucose sensitive materials had been developed by thermo-polymerization method including carrier covalence method and carrier covalence-cross linking method, and the properties had been investigated using the detection experiment of oxygen and spectrophotometer, at the mean time, the applications of oxygen sensitive materials in fiber optical gaseous oxygen sensor and fiber optical dis
solved oxygen sensor, and that of biology sensitive materials in fiber optical dextrose sensor had been studied in this paper. Major content of this work includes five aspects as follows: (1). Oxygen sensitive materials had been prepared by carrier covalence method, and the preparation mechanism of the materials had been investigated by FI-IR, SEM, and the detection experiment of oxygen. Then through the detection of oxygen, the sensitivity and stability had been estimated, and it was studied that the properties of materials would be affected by the various factors.
(2). Oxygen sensitive materials had been prepared by carrier covalence-cross linking method, and the preparation mechanism of the materials had been investigated by FI-IR, SEM, and the detection experiment of oxygen. Then through the detection of oxygen and spectrophotometer, the sensitivity and stability had been estimated, and it was studied that the properties of materials would be affected by the various factors.
(3). For the detection of gaseous oxygen, the fiber optical sensor on basis of oxygen sensitive materials had a respond time of 10s, detection limit of 5ppm
and detection precision of 0.5%. The sensor had good repeatability and stability, a less delay and at least 1 year life-span. And at the same time, the sensor could be used in various environments for the detection of gaseous oxygen.
(4). The application of oxygen sensitive materials in fiber optical dissolved oxygen sensor was studied: The respond time is 20s and the repeatability and stability are excellent. The detection of the sensor is not affected by pH value, but is influenced by the temperature of solution, and only could be used in low-temperature solution for detection.
(5). Glucose oxidase glass micro-pearls, the biology sensitive materials was prepared based on oxygen sensitive materials made by thermo-polymerization method, and could be utilized to detected the concentration of glucose in solution.
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