Estimation of sulfuric acid concentration using ambient ion composition and concentration data obtained with atmospheric pressure interface time-of-flight ion mass spectrometer
Lisa J. Beck,Siegfried Schobesberger,Mikko Sipilä,Veli-Matti Kerminen,and Markku Kulmala
Institute for Atmospheric and Earth System Research/Physics,
University of Helsinki, 00014 Helsinki, Finland
Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for
Soft Matter Sciences and Engineering,Beijing University of Chemical
Technology (BUCT), Beijing, China
Joint International Research Laboratory of Atmospheric and Earth
System Sciences, School of Atmospheric Sciences, Nanjing University,
Nanjing, China
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Sulfuric acid is known to be a main compound in atmospheric new particle formation. Yet, its concentration is very low, which leads to challenges in detecting it. In our study, we derive the sulfuric acid concentration from measurements of ambient ions with a mass spectrometer. Our validation shows that the theoretical approach using the bisulfate ion and its clusters with H2SO4 captures the sulfuric acid concentration very well during daytime.
Sulfuric acid is known to be a main compound in atmospheric new particle formation. Yet, its...
