ID | 118162 |
著者 |
Nakagawa, Shinya
Tokushima University
Watanabe, Hiroki
Tokushima University
Isobe, Takaharu
Waseda University
Ogata, Hiroko
Waseda University
Okochi, Hiroshi
Waseda University
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キーワード | Long-range transportation
Mt. Fuji
Near-real-time monitor
Sakurajima volcano
Wet denuder
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資料タイプ |
学術雑誌論文
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抄録 | Mountain observatories at high altitudes, far from local anthropogenic emission sources, are considered ideal for monitoring temporal variations of tropospheric air pollutants. During August 17–21 in 2013, we measured sulfur dioxide and nitric acid concentrations in the free troposphere at the top (3776 m a.s.l.) of Mt. Fuji, Japan. A parallel plate wet denuder-ion chromatographic system was used for the online measurement with 15 min temporal resolution. The continuous observations were successfully achieved without any problems. Of the samples collected, 97.8% of sulfur dioxide and 75.7% of nitric acid were above the limits of quantification. The average gas concentrations ± standard deviation (n = 408) were 0.106 ± 0.377 ppbv for sulfur dioxide and 0.015 ± 0.014 ppbv for nitric acid, respectively. Episodic elevations of sulfur dioxide concentration were recorded from August 20 to 21. Backward trajectory analyses indicated that the high-temporal resolution monitor detected the volcanic sulfur dioxide from Mt. Sakurajima, located 857 km from the sampling point. High-time-resolved observations in the free troposphere proved useful for source identification of air pollutants.
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掲載誌名 |
Atmospheric Environment: X
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ISSN | 25901621
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出版者 | Elsevier
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巻 | 18
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開始ページ | 100213
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発行日 | 2023-03-09
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権利情報 | This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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出版社版DOI | |
出版社版URL | |
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言語 |
eng
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著者版フラグ |
出版社版
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部局 |
薬学系
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