ABSTRACT
The method is based on the gasphase chemiluminescent reaction of ozone with ethylene to produce an excited species that emits light in the visible range (1,2,3,4). The reaction is rapid and specific for ozone. The chemiluminescent reaction takes place in a chamber that has a light-transparent end-face coupled to a photomultiplier tube. The resulting signal produced by the photomultiplier tube is proportional to ozone concentration. The signal is further amplified and either read directly on a recorder or converted into a digital display, depending upon the construction of the specific instrument.
