2013 Fiscal Year Final Research Report
Measurements of peroxyacyl nitrates in the transboundary polluted atmosphere and their impacts on the photchemical reactivity
| Project/Area Number |
23241008
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Osaka Prefecture University |
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Principal Investigator |
BANDOW Hiroshi 大阪府立大学, 工学(系)研究科(研究院), 教授 (80124353)
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| Co-Investigator(Kenkyū-buntansha) |
SADANAGA Yasuhiro 大阪府立大学, 工学(系)研究科(研究院), 准教授 (70391109)
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| Co-Investigator(Renkei-kenkyūsha) |
ITANO Yasuyuki 大阪市立環境科学研究所, 調査研究課, 研究主任 (50332432)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 環境計測 / 反応性総窒素酸化物 / Peroxyacyl nitrates / Alkyl nitrates / 越境大気汚染 |
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| Research Abstract |
Organic nitrate esters in the air are the secondary pollutants yielded by the atmospheric photooxidation, and are transported over long range, implying they are potential causes of air pollutions in the remote areas, where anthropogenic activities are low. In this study, continuous measurements of them have been conducted for long period at Suzu, located at the tip of Noto Peninsula facing to Japan Sea. Their concentration variabilities have been analyzed in terms of the seasonality and also the dependence on the air mass trajectory. It has been found that the relative abundance of peroxyacyl and alkyl nitrates accounts for ca. 15-35 % to NOy, their concentrations at Suzu increase during the winter to spring mainly by the transport from the Asian continent, and they are much involved in in-situ photochemistry near the observational site, suggesting they could be a cause and a result of photochemical reactivity in such a remote area.
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