【作者】 成文萍；

【导师】 董川；

【作者基本信息】 山西大学 ， 分析化学， 2011， 硕士

【摘要】 第一章：简述了光纤传感器的主要类型,对光谱吸收型光纤传感器、荧光光纤传感器、倏逝波光纤传感器、表面等离子体共振光纤传感器及模式滤光光纤传感器的工作原理进行了阐述,并重点对模式滤光光纤传感器的研究进展进行了综述。第二章：采用裸光纤和毛细管构建了模式滤光光纤蔗糖传感器的敏感元件,对一系列不同浓度蔗糖标准溶液进行测定,测定蔗糖溶液的响应范围为0-60%(w/w),模式滤光强度与溶液浓度呈线性关系,相关系数为R=0.9994。该传感器具有良好的重现性和可逆性,且对实际样品有较好的加标回收率,为检测蔗糖浓度提供了实时、在线、快速、灵敏的测定方法。第三章：采用溶胶凝胶技术把染料邻苯二酚紫涂覆在光纤上,并将修饰好的光纤插入毛细管中,构建一种新型的模式滤光光纤pH传感器。在涂层厚度为5μm,流速为1.11 mL/min的条件下,该传感器对pH有较好的响应,响应时间为168s,响应范围为6～11,且在6-9有良好的线性关系,相关系数R=0.9995。当ΔpH≥0.2时,传感器有较好的分辨率。此外,传感器具有良好的重现性、可逆性和精密度,一些常见的金属离子对传感器几乎没有干扰。第四章：采用溶胶凝胶技术制备含溴酚蓝的光纤涂层液,将其涂覆在光纤表面。将涂层光纤插入毛细管中,构建了新型的模式滤光光纤pH传感器。在流速为0.96 mL/min的条件下,该传感器对pH较好的响应,响应时间为98s,响应范围为2-8。在2～8范围内,呈S型响应曲线,相关系数R=0.9990。该传感器有较好的重现性和可逆性,但离子的干扰比较严重,Na+,K+,NH4+离子的干扰尤其严重。第五章：制备含溴甲酚绿的溶胶凝胶混合液,将其涂覆在光纤表面,并将修饰了涂层的光纤插入毛细管中,构建了新型的模式滤光光纤K+传感器。在1.11 mL/min的流速条件下,该传感器对K+较好的响应,响应时间为132s,响应范围为0.25～20.0 mmol/L,且在此范围内,传感器对K+的标准溶液的响应呈曲线变化,非线性方程：I =2071.1-505.5 Ln[K+](mmol/L),相关系数R=0.9988。该传感器还有较好的重现性和可逆性,除Pb2+外,一些常见的离子对传感器的干扰不大。更多还原

【Abstract】 Chapter 1:This chapter describes the common types of fiber optic sensors, it describes the working principle of the spectral absorption optical fiber sensors, the fluorescence optical fiber sensor, the evanescent wave optical fiber sensors,the surface plasmon resonance fiber optic sensors and the mode-filter optical fiber sensors, and the mode-filter optical fiber sensors,were reviewed importantly in this paper.Chapter 2:Constructing the mode-filter optical fiber sucrose sensor use naked fiber and capillary.It measured a series of standard solutions of different concentrations of sucrose, Sucrose solution response range is 0-60% (w/w), the mode filter strength and solution concentration is the linear relationship, correlation coefficient R=0.9994. The sensor has good reproducibility and reversible, and has better the actual sample recoveries, it provides real-time, sucrose concentration online, fast and sensitive determination methods.Chapter 3:This chapter uses sol-gel technology coating pyrocatechol violet dye into the fiber surface and Inserting the modified fiber into the capillary to construct a new type of mode filter pH sensor. In the coating thickness for 5μm, flow rate for 1.11 mL/min conditions, the sensor has good response for pH. The response time is 168s, response range is 6～11, and in 6～9 have good linear relationship, correlation coefficient R is 0.9995. WhenΔpH≥0.2, it has good resolution. In addition, the sensor has good reproducibility, reversible and accuracy, some common metal ions almost have no interference for the sensor.Chapter 4:This chapter uses sol-gel technique with the preparation of phenol blue bromide fiber coating solution, and coat it on the fiber surface. Then inserting the coating fiber into the capillary to construct a new optical fiber pH sensors. In the following 0.99 mL/min conditions, The sensor has good response for pH, response time is 98s, the response range is 2～8. In 2-8 range, it is s-type response curve, correlation coefficient R=0.9990. The sensor has a good reproducibility and reversible, But the ion interference is more serious, The interference of Na+, K+ and NH4+ ions are especially serious.Chapter 5:This chapter makes sol-gel mixture for containing bromine cresol green and coat it on the fiber surface. Then inserting the coating fiber into capillary to construct a new optical fiber K+ sensors. In the following 1.11 mL/min conditions, The sensor has good response for K+, response time is 132s, the response range is 0.25-20.0 mmol/L, In this range, The K+ sensors to the standard solution in the response is curves changing, nonlinear equations is I= 2071.1- 505.5 Ln [K+] (mmol/L), correlation coefficient R=0.9988. The sensor also has good reproducibility and reversible, except Pb2+, some common ions to the sensor have a little impact.更多还原