Origin of atmospheric organic nitrogen aerosols revealed by the analysis of their chemical composition and isotope ratios
| Project/Area Number |
25281002
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Hokkaido University |
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Principal Investigator |
MIYAZAKI Yuzo 北海道大学, 低温科学研究所, 助教 (60376655)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Kiyoshi 山梨大学, 総合研究部, 准教授 (60373049)
MOCHIDA Michihiro 名古屋大学, 大学院環境学研究科, 准教授 (10333642)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2015: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
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| Keywords | 有機態窒素 / 有機エアロゾル / 窒素同位体 / 元素分析 / 質量分析 / アミノ酸 / 同位体比 / 大気エアロゾル |
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| Outline of Final Research Achievements |
The objective of this research project was to investigate the origin and formation processes of atmospheric organic nitrogen (ON) aerosols based on the analysis of their chemical composition and isotope ratios. We found that ON accounted for at a maximum of ~40% of the total nitrogen aerosols in the forest atmosphere. It was suggested that reaction between biogenic hydrocarbons emitted from the forest vegetation and anthropogenic nitrogen is plausible sources for the majority of the observed ON in summer. Contribution of amino acids to the water-soluble ON (WSON) mass was quantified in the various atmospheric environments. WSON was found to reside in the gas phase more than previously recognized.
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Report
(4 results)
Research Products
(19 results)
