一种可用于溶解氧测定的光纤氧传感器

用Ru (bpy) 3Cl2 为指示剂,研制一种能用来测定溶解氧的光纤氧传感器。该传感器的响应时间小于30 s ,检测下限为0. 5 mg/ L ,检测准确度为0. 01 mg/ L ,并具有较强的抗干扰能力、较好的重复性和稳定性,可用于对环境水质的在线监测。
关键词: 光纤氧传感器; 水质监测; 锁相放大; 荧光猝灭; 溶解氧
Abstract : A optical fiber oxygen sensor for detecting dissolved oxygen in water has been fabricated by using Ru (bpy) 3Cl2 as the indicator. The sensor’s response time is less than 30 s. It has the detecting limit of 0. 5 mg/ L and the detecting precision of 0. 01 mg/ L. Moreover ,the sensor has strong ability of anti2disturbance ,better re2 peatability and stability. So it can monitor the changes of the concentration of dissolved oxygen in the water on line.
Key words : optical fiber oxygen sensor ; water quality monitoring ; phase lock2in amplifying ; fluorescence quenching ; dissolved oxygen