Techniques for pollution monitoring in remote sites. II: Ozone

An O sub(3) monitoring system for use in remote sites lacking AC line power was developed. A chemiluminescent O sub(3) monitor, ethylene delivery system, and a DC power supply were combined to allow unattended O sub(3) measurements over extended periods of time. A Campbell Scientific 21X micrologger in combination with a relay was used to control the ethylene delivery solenoid and O sub(3) analyzer power, and to record results. The system was tested over a six week period in late summer 1990 and gave results comparable to those from surrounding sites.