2012 Fiscal Year Final Research Report
Development of a direct measurement system of photochemical ozone production rate in the atmosphere
| Project/Area Number |
23651018
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 光化学オゾン / 都市大気 / 生成速度の直接測定 |
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| Research Abstract |
A measurement system of photochemical ozone production rates has been developed. Ambient air is introduced into the reaction chamber which transmits solar ultraviolet and the reference chamber which blocks UV. Both chambers are placed in the outside to be exposed to ambient solar UV. Ozone is photochemically produced in the reaction chamber. Meanwhile, no ozone is formed in the reference chamber. An ozone production rate can be obtained by dividing the difference of ozone concentrations between the two chambers by the residence time in the reaction chamber. These instruments have been constructed, and optimizationsof this instrument and preliminary observations have been conducted.
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