Fiber Optic Chemical Sensor for Trihalomethanes

小企业创新研究（SBIR）第一阶段项目 在分析和表面化学的一般领域和在 传感器技术子领域。 这项活动的重点是 光纤化学传感器（FOCS）作为新的 现场检测和监测仪器 特定种类的化合物。 特别是，新的 挥发性偕-多卤代测定方法 烃（GPCHC），如三卤代甲烷（THM）， 饮用水和地下水，将得到开发和评估。 Canadian激光公司和俄勒冈州州立大学将合作 协同实施特定的化学反应， 固定在光纤远端的微型反应器 激励/收集系统。 二极管泵浦激光器将 用于激发反应产物中的荧光; 荧光增强的程度与 样品中的挥发性物质。 在第一阶段活动中开发的仪器可以 可能在美国的3,000多个设施中使用， 每个设施为1万多人提供成品饮用水。 此外，地下水以及特定的废物场可以 使用这种方法进行真实的实时原位常规测试 监测.

This Small Business Innovation Research (SBIR) Phase I project is in the general area of analytical and surface chemistry and in the subfield of sensor technology. This activity focusses on the development of Fiber Optic Chemical Sensors (FOCS) as new instrumentation for the in-situ detection and monitoring of specific classes of chemical compounds. In particular, a new method for the determination of volatile gem-polyhalogenated hydrocarbons (GPCHC) such as the trihalogenated methanes (THM), in drinking and ground water, will be developed and evaluated. Candela Laser Corporation and Oregon State University will work collaboratively to implement specific chemical reactions in a miniature reactor secured to the distal end of a fiber optic excitation/collection system. A diode pumped laser will be employed to excite fluorescence in a reaction product; the rate of fluorescence increase will be related to the concentration of the volatile species in the sample. The instrumentation developed in this Phase I activity can be potentially employed in the over 3,000 facilities in the U.S. that supply finished drinking water to over 10,000 people per facility. In addition, ground water as well as specific waste sites could be routinely tested using this approach to real time in-situ monitoring.