portable instrumentation for optical measurements phosphorescence lifetimes at room temperature fiber.

摘要

portable instrumentation fiber optic measures phosphorescence lifetimes at room temperature. Comprises a source of pulsed light (1) with power supply (2), two interference filters (3 and 7), a fiber optic bundle bifurcated in which one of the branches (4) leads the light from the lamp to the phosphorescent sensing phase (5) and the other (6) directs the emission from the sensor stage to the light detector (8). The signal from the light detector is amplified in an amplifier (9) and processed in a digital signal processor (10). By a method of acquiring and processing signals phosphorescent emission is determined the lifetime of phosphorescence and the concentration of the analyte of interest. Application in the development of phosphorescent optical sensors for analytical control in industrial processes, environmental monitoring, medicine and biotechnology.