北海道大学大学院環境科学院廣川研究室は大気におけるさまざまな現象を化学の視点から解明する研究を行っております。

学術論文

Yosuke Sakamoto, Jun Zhou, Nanase Kohno, Maho Nakagawa, Jun Hirokawa, Yoshizumi Kajii, "Kinetics study of OH uptake onto deliquesced NaCl particles by combining laser photolysis and laser-induced fluorescence", J. Phys. Chem. Lett, 9, 4115 – 4119 (2018)

Yosuke Sakamoto, Motoki Goda, Jun Hirokawa, "Kinetics study of heterogeneous bromine release from the reaction between gaseous ozone and aqueous bromine solution", J. Phys. Chem. A, 122, 2723 – 2731 (2018).

Yosuke Sakamoto, Ryoji Yajima, Satoshi Inomata, and Jun Hirokawa, "Water vapour effects on secondary organic aerosol formation in isoprene ozonolysis", Phys. Chem. Chem. Phys., 19, 3165 – 3175 (2017).

Satoshi Inomata and Jun Hirokawa, "Non-radioactive chemical ionization mass spectrometry using acetic acid–acetate cluster as a reagent ion for the real-time measurement of acids and hydroperoxides", Chem. Lett., 46, 38 – 41 (2017).

Phil A. Brown, Satoshi Inomata, Hiroshi Tanimoto, Kei Sato, Yosuke Sakamoto, Ryoji Yajima, and Jun Hirokawa, "Dialdehyde production during direct dissociation of energy-rich Criegee intermediates produced by ozonolysis of cycloalkenes", Chem. Lett., 45, 916 – 918 (2016).

M. Nakayama, C. Zhu, J. Hirokawa, T. Irino, and H. Yoshikawa-Inoue, "Ozone depletion in the interstitial air of the seasonal snowpack in northern Japan", TellusB, 67, 24934 (2015).

S. Inomata, K. Sato, J. Hirokawa, Y. Sakamoto, H. Tanimoto, M. Okumura, S. Tohno, and T. Imamura, "Analysis of secondary organic aerosols from ozonolysis of isoprene by proton transfer reaction mass spectrometry", Atmos. Environ., 97, 397 – 405 (2014).

Y. Sakamoto, S. Inomata, and J. Hirokawa, "Oligomerization reaction of the Criegee intermediate leads to secondary organic aerosol formation in ethylene ozonolysis", J. Phys. Chem. A, 117, 12912 – 12921 (2013).

G. A. Morris, G. Labow, H. Akimoto, M. Takigawa, M. Fujiwara, F. Hasebe, J. Hirokawa, and T. Koide, "On the use of the correction factor with Japanese ozonesonde data", Atmos. Chem. Phys., 13, 1243 – 1260 (2013).

G. A. Morris, W. D. Komhyr, J. Hirokawa, J. Flynn, B. Lefer, N. Krotkov, and F. Ngan, “A balloon sounding technique for measuring SO₂ plumes”, J. Atmos. Oceanic Technol., 27, 1318 – 1330 (2010).

J. Hirokawa, T. Kato, and F. Mafuné, “In situ measurements of atmospheric nitrous acid by chemical ionization mass spectrometry using chloride ion transfer reactions”, Anal. Chem. 81, 8380 – 8386 (2009).

J. Hirokawa, T. Kato, and F. Mafuné, “Uptake of gas-phase nitrous acid by pH-controlled aqueous solution studied by a wetted wall flow tube”, J. Phys. Chem. A, 112, 12143 – 12150 (2008).

H. Tanimoto, N. Aoki, S. Inomata, J. Hirokawa, and Y. Sadanaga, “Development of a PTR-TOFMS instrument for real-time measurements of volatile organic compounds in air”, Int. J. Mass Spectrom., 263, 1 – 11 (2007).

K. Kita, Y. Morino, Y. Kondo, Y. Komazaki, N. Takegawa, Y. Miyazaki, J. Hirokawa, S. Tanaka, T. L. Thomspon, R. S. Gao, and D. W. Fahey, “A chemical ionization mass spectrometer for gournd-based measurements of nitric acid”, J. Atmos. Oceanic Technol., 23, 1104 – 1113 (2006).

S. Inomata, H. Tanimoto, N. Aoki, J. Hirokawa, and Y. Sadanaga, “A novel discharge source of hydronium ions for proton transfer reaction ionization: design, characterization, and performance”, Rapid Commun. Mass Spectrom., 20, 1025 – 1029 (2006).

S. Kato, Y. Kajii, R. Itokazu, J. Hirokawa, S. Koda, and Y. Kinjo, “Transport of atmospheric carbon monoxide, ozone, and hydrocarbons from Chinese coast to Okinawa island in the Western Pacific during winter”, Atmos. Environ., 38, 2975 – 2981 (2004).

Y. Sadanaga, J. Hirokawa, and H. Akimoto, “Formation of molecular chlorine in dark condition: Heterogeneous reaction of ozone with sea salt in the presence of ferric ion”, Geophys. Res. Lett., 28, 4433 – 4436 (2001).

J. Matsumoto, J. Hirokawa, H. Akimoto, and Y. Kajii, “Direct measurement of NO₂ in the marine atmosphere by laser-induced fluorescence technique”, Atmos. Environ., 35, 2803 – 2814 (2001).

Y. Kanaya, Y. Sadanaga, J. Hirokawa, Y. Kajii, and H. Akimoto, “Development of a ground-based LIF instrument for measuring HOx radicals: Instrumentation and calibrations”, J. Atmos. Chem., 38, 73 – 110 (2001).

M. Mochida, J. Hirokawa, and H. Akimoto, “Unexpected large uptake of O₃ on sea salts and the observed Br₂ formation”, Geophys. Res. Lett., 27, 2629 – 2632 (2000).

H. Tanimoto, J. Hirokawa, Y. Kajii, and H. Akimoto, “A new measurement technique of peroxyacetyl nitrate at parts per trillion by volume levels: Gas chromatography / negative ion chemical ionization mass spectrometry”, J. Geophys. Res., 104, 21343 – 21354 (1999).

P. Pochanart, J. Hirokawa, Y. Kajii, H. Akimoto, and M. Nakao, “Influence of regional-scale anthropogenic activity in northeast Asia on seasonal variations of surface ozone and carbon monoxide observed at Oki, Japan”, J. Geophys. Res., 104, 3621 – 3631 (1999).

M. Mochida, J. Hirokawa, Y. Kajii, and H. Akimoto, “Heterogeneous reactions of Cl₂ with sea salts at ambient temperature: Implications for halogen exchange in the atmosphere”, Geophys. Res. Lett., 25, 3927 – 3930 (1998).

J. Hirokawa, K. Onaka, Y. Kajii, and H. Akimoto, “Heterogeneous processes involving sodium halide particles and ozone: Molecular bromine release in the marine boundary layer in the absence of nitrogen oxides”, Geophys. Res. Lett., 25, 2449 – 2452 (1998).

著書

「オゾン層破壊の科学」北海道大学大学院環境科学院編，北海道大学出版会，2007.（共著）
「みんなが知りたいＰＭ2.5の疑問25」日本エアロゾル学会　畠山史郎・三浦和彦編著，成山堂書店，2014.（共著）
「基礎の化学」田中俊逸,神谷裕一,廣川淳,中村博 著, 三共出版, 2015. (共著)

総説・解説

廣川　淳, “化学イオン化質量分析法を用いた二次エアロゾル生成過程の研究”，エアロゾル研究, 26, 195 – 202 (2011).

廣川　淳, 秋元　肇, “大気圏エアロゾルの表面反応と大気化学－海塩粒子のケース”, エアロゾル研究, 11, 108 – 112 (1996).

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