Gewehr P M, Delpy D T
Department of Medical Physics & Bioengineering, University College London, UK.
Med Biol Eng Comput. 1993 Jan;31(1):11-21. doi: 10.1007/BF02446880.
A gaseous oxygen sensor is described based on the measurement of phosphorescence lifetime of the dye palladium coproporphyrin, immobilised in a range of membrane materials including polyvinyl chloride, polymethylmethacrylate, polystyrene and silicone rubber. The lifetime of the dye in these materials is described, measured using a simple system consisting of a pulsed xenon flash lamp light source and a PC-based data acquisition system. The linearity of the sensing membranes over the 0-100 per cent oxygen range is presented together with data on temperature sensitivity, the effects of CO2, N2O, H2O and halothane, and the effects of ageing over a 90 day period. The sensors based upon polystyrene immobilised dye appear to provide the optimum characteristics for a gaseous oxygen sensor.
描述了一种基于测量固定在包括聚氯乙烯、聚甲基丙烯酸甲酯、聚苯乙烯和硅橡胶在内的一系列膜材料中的染料钯原卟啉磷光寿命的气态氧传感器。描述了该染料在这些材料中的寿命，并使用由脉冲氙闪光灯光源和基于PC的数据采集系统组成的简单系统进行测量。给出了传感膜在0 - 100%氧气范围内的线性度，以及关于温度敏感性、二氧化碳、一氧化二氮、水和氟烷的影响以及90天老化影响的数据。基于固定在聚苯乙烯上的染料的传感器似乎为气态氧传感器提供了最佳特性。
