1. Measurements of atmospheric hydroperoxides over a rural site in central Japan during summers using a helicopter.
- Author
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Watanabe, Koichi, Yachi, Chinatsu, Nishibe, Miyuki, Michigami, Serina, Saito, Yukiko, Eda, Nagisa, Yamazaki, Nobuhiro, and Hirai, Taiki
- Subjects
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HYDROPEROXIDES , *ATMOSPHERIC deposition , *HIGH performance liquid chromatography , *SAMPLING (Process) , *AIR pollution - Abstract
The concentrations of hydroperoxides (H 2 O 2 and MHP), O 3 , SO 2 and NO X * over Imizu City, Toyama Prefecture, Japan were measured during summers using a helicopter. The concentrations of hydroperoxides were analyzed by an HPLC system within 5–10 min after the sampling. The H 2 O 2 concentration was lowest at the surface, and the highest concentration was detected at altitudes of 6000 and 8000 ft. The MHP was also higher in the high-altitude atmosphere. Significantly high concentrations of hydroperoxides were observed when air pollutants were transported from China. The concentration of H 2 O 2 was higher than that of SO 2 above 4000 ft where the potential capacity of SO 2 oxidation in the aqueous phase is large. A helicopter is useful for measuring of hydroperoxides in the high-altitude atmosphere using an HPLC system in a laboratory. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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