Behavior of marine originated bromine species in authentic aerosols collected in Okinawa, Japan
| Project/Area Number |
15K12191
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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 | University of the Ryukyus |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 大気エアロゾル / 臭素 / 光化学反応 / 活性酸素 / 有機物 / エアロゾル |
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| Outline of Final Research Achievements |
Ozone in the atmosphere can be drastically destroyed by reaction with active bromine species. Origin and formation mechanisms of active bromine species are of special interest since ozone affects atmospheric oxidation capacity. We have investigated chemical forms of bromine in atmospheric aerosols collected in Okinawa, Japan. We found that nearly half of marine originated bromine was vaporized from the aerosols to gas phase by forming gaseous species. The rest was ca. 40% water-soluble Br species, mainly Br-, and 5% water-insoluble Br species. Further study is needed to better understand transformation mechanisms of Br in aerosols.
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Report
(4 results)
Research Products
(11 results)
