title: Real-time analysis of secondary organic aerosol particles formed from cyclohexene ozonolysis using a laser-ionization single-particle aerosol mass spectrometer.
abstract: A real-time analysis of secondary organic aerosol (SOA) particles formed from cyclohexene ozonolysis in a smog chamber was performed using a laser-ionization single-particle aerosol mass spectrometer (LISPA-MS). The instrument obtains both size and chemical compositions of individual aerosol particles with a high time-resolution (approximately 2 s at the maximum). Both positive and negative-ion mass spectra are obtained. Standard particles generated from dicarboxylic acid solutions using an atomizer were also analyzed. For both standard and SOA particles, the negative-ion mass spectra provided information about the molecular weights of the organic compounds in the particles, since the intense ions in the negative-ion mass spectra are mainly attributable to the molecular-related ions [M-H]-. It was demonstrated that the real-time single-particle analysis of SOA particles by the LISPA-MS technique can reveal the formation and transformation processes of SOA particle in smog chambers.
authors.affiliation: Solar-Terrestrial Environment Laboratory, Nagoya University, Japan.
authors.forename: Masahiro
authors.initials: M
authors.lastname: Narukawa
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Matsumi
authors.forename: Jun
authors.initials: J
authors.lastname: Matsumoto
authors.forename: Kenshi
authors.initials: K
authors.lastname: Takahashi
authors.forename: Akihiro
authors.initials: A
authors.lastname: Yabushita
authors.forename: Kei
authors.initials: K
authors.lastname: Sato
authors.forename: Takashi
authors.initials: T
authors.lastname: Imamura