2015 Fiscal Year Final Research Report
Removal of atmospheric HNO3 by the aerosols with diameters larger than 10 micrometer
| Project/Area Number |
25400525
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Geochemistry/Cosmochemistry
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | エアロゾル / 粗大粒子 / 硝酸態窒素 / 窒素沈着 / 乾性沈着 |
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| Outline of Final Research Achievements |
In order to verify the importance of the aerosols with diameters larger than 10μm (PM>10) for the removal of atmospheric HNO3, an aerosol sampler that can segregate the PM>10 into 4 bins (10-14μm, 14-25μm, 25-40μm, and > 40μm) was developed. Using this sampler, the size distribution of the chemical compounds in the aerosols with diameters from 0.43 to 40μm was measured. Dry deposition velocities of the aerosols were calculated according to their sizes by the resistance model, and the dry deposition amounts of chemical compounds in the aerosols were estimated by multiplying the concentrations of the compounds by the velocities. In the results, about 10% of atmospheric HNO3 is estimated to be removed by the PM>10.
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| Free Research Field |
大気化学
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