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Peroxy radicals (ROx) concentrations were measured by Peroxy Radical Chemical Amplifier (PERCA) technique during the field campaign RISFEX 2003 (RiShiri Fall Experiment 2003), which was performed in September 2003 at Rishiri island (45.07 N, 141.12 E, and 35 m asl) in the sea of Japan. The concentrations of nighttime ROx radicals had temporal variations around an average of 7.9±5.8 (1σ) pptv and showed...
Radical production in the ozonolysis of propene in air was monitored directly by a peroxy radical chemical amplification (PERCA) instrument at room temperature (298±2 K) and atmospheric pressure (1×105 Pa). The ozonolysis reactions were conducted in a flow tube under pseudo-first-order conditions for ozone. The decay in ozone was calculated based on reaction time tr and effective rate constant k...
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