Determination of nitrous acid emission factors from a vehicle
| Project/Area Number |
17K00515
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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 |
Environmental dynamic analysis
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
Nakashima Yoshihiro 東京農工大学, (連合)農学研究科(研究院), 准教授 (20419873)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 亜硝酸 / 自動車排気ガス / 排出係数 / 光化学オキシダント |
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| Outline of Final Research Achievements |
Vehicular exhaust is one of the important primary emission sources of nitrous acid (HONO). In this study, measurement of HONO in vehicular emission from gasoline and diesel vehicle, and the gasoline vehicle produced before 2010 were carried out using a chassis dynamometer combined with incoherent broadband cavity enhanced absorption spectroscopy (IBBCEAS). From the measurement of the cocnentration of HONO, the emission factors of HONO were determined and the differences of the emission factors for each vehicles were discussed.
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| Academic Significance and Societal Importance of the Research Achievements |
光化学オキシダント濃度の増加は大気環境における重要な問題であり、世界の主要都市でも同様の問題を抱えている。また近年光化学オキシダントの主成分であるオゾンは温室効果として作用することがわかっており、光化学オキシダントの削減は大気環境の改善と温室効果の抑制の両面で重要である。
本研究で対象とした亜硝酸は光化学オキシダントの生成に関与する重要な物質であり、また最近は呼吸器疾患の原因物質としても着目されている。一方で亜硝酸の大気への排出や生成過程に関しては未解明な点が多い。本研究により亜硝酸の大気への排出過程の一端が解明され、ひいては光化学オキシダント生成過程の解明の一助になると期待される。
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Report
(4 results)
Research Products
(13 results)
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[Journal Article] Relative and Absolute Sensitivity Analysis on Ozone Production in Tsukuba, a City in Japan2019
Author(s)
Yosuke Sakamoto, Yasuhiro Sadanaga, Jiaru Li, Kohei Matsuoka, Marina Takemura, Tomihide Fujii, Maho Nakagawa, Nanase Kohno, Yoshihiro Nakashima, Kei Sato, Tomoki Nakayama, Shungo Kato, Akinori Takami, Ayako Yoshino, Kentaro Murano and Yoshizumi Kajii
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Journal Title
Environmental Science & Technology
Volume: 53
Issue: 23
Pages: 13629-13635
DOI
Related Report
Peer Reviewed
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[Journal Article] Comprehensive measurements of atmospheric OH reactivity and trace species within a suburban forest near Tokyo during AQUAS-TAMA campaign2018
Author(s)
Sathiyamurthi Ramasamy, Yoshihide Nagai, Nobuhiro Takeuchi, Shohei Yamasaki, Koki Shoji, Akira Ida, Charlotte Jones, Hiroshi Tsurumaru, Yuhi Suzuki, Ayako Yoshino, Kojiro Shimada, Yoshihiro Nakashima, Shungo Kato, Shiro Hatakeyama, Kazuhide Matsuda, Yoshizumi Kajii
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Journal Title
Atmospheric Environment
Volume: 184
Pages: 166-176
DOI
Related Report
Peer Reviewed
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[Journal Article] Missing ozone-induced potential aerosol formation in a suburban deciduous forest2017
Author(s)
Nakayama T., Kuruma Y., Matsumi Y., Morino Y., Sato K., Tsurumaru H., Ramasamy S., Sakamoto Y., Kato S., Miyazaki Y., Mochizuki T., Kawamura K., Sadanaga Y., Nakashima Y., Matsuda K., Kajii Y.
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Journal Title
Atmospheric Environment
Volume: 171
Pages: 91-97
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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