Measuring Atmospheric Free Radicals Using Chemical Amplification
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
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Atmospheric free radicals play an important role in early all atmospheric cycles. The focus of this research was to continue characterizing the PEroxy Radical measurement by Chemical Amplification PERCA method first investigated by Cantrell 1983, 1984, then Buhr 1986. Experiments proved the original model of the PERCA method developed by Cantrell was too simple. New instrument modifications have insured optimum performance for peroxy radical measurement in clean, dry environments. The instrument is currently calibrated under laboratory conditions by observing the decay of HO2 radicals in a formaldehyde photolysis system. The reported chain lengths of 600 are in reasonable agreement with previously reported methods. Theses.
- Atmospheric Physics
- Inorganic Chemistry