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High Gas-Phase Methanesulfonic Acid Production in the OH-Initiated Oxidation of Dimethyl Sulfide at Low Temperatures
/ Shen, Jiali ; Scholz, Wiebke ; He, Xu-Cheng ; Zhou, Putian ; Marie, Guillaume ; Wang, Mingyi ; Marten, Ruby ; Surdu, Mihnea ; Rörup, Birte ; Baalbaki, Rima et al.
Dimethyl sulfide (DMS) influences climate via cloud condensation nuclei (CCN) formation resulting from its oxidation products (mainly
methanesulfonic acid, MSA, and sulfuric acid, H2SO4). Despite their importance,
accurate prediction of MSA and H2SO4 from DMS oxidation remains
challenging. [...]
2022 - 14 p.
- Published in : Environ. Sci. Technol. 56 (2022) 13931-13944
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On the composition of ammonia–sulfuric-acid ion clusters during aerosol particle formation
/ Schobesberger, S (Helsinki U.) ; Franchin, A (Helsinki U.) ; Bianchi, F (PSI, Villigen) ; Rondo, L (Goethe U., Frankfurt (main)) ; Duplissy, J (Helsinki U. ; CERN) ; Kürten, A (Goethe U., Frankfurt (main)) ; Ortega, I K (Helsinki U. ; PhLAM, Villeneuve d'Ascq) ; Metzger, A (Ionicon Analytik GmbH, Innsbruck) ; Schnitzhofer, R (Innsbruck U.) ; Almeida, J (CERN) et al.
The formation of particles from precursor vapors is an important source of atmospheric aerosol. Research at the Cosmics Leaving OUtdoor Droplets (CLOUD) facility at CERN tries to elucidate which vapors are responsible for this new-particle formation, and how in detail it proceeds. [...]
2015 - 24 p.
- Published in : Atmos. Chem. Phys. 15 (2015) 55-78
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Unexpectedly acidic nanoparticles formed in dimethylamine–ammonia–sulfuric-acid nucleation experiments at CLOUD
/ Lawler, Michael J (UC, Irvine (main)) ; Winkler, Paul M (Vienna U.) ; Kim, Jaeseok (UEF, Kuopio ; Korea Polar Research Institute, Republic of Korea) ; Ahlm, Lars (Stockholm U.) ; Tröstl, Jasmin (PSI, Villigen) ; Praplan, Arnaud P (Helsinki U. ; Finnish Meteorological Inst.) ; Schobesberger, Siegfried (Helsinki U. ; Washington U., Seattle) ; Kürten, Andreas (Goethe U., Frankfurt (main)) ; Kirkby, Jasper (Goethe U., Frankfurt (main) ; CERN) ; Bianchi, Federico (Helsinki U.) et al.
New particle formation driven by acid–base chemistry was initiated in the CLOUD chamber at CERN by introducing atmospherically relevant levels of gas-phase sulfuric acid and dimethylamine (DMA). Ammonia was also present in the chamber as a gas-phase contaminant from earlier experiments [...]
2016 - 18 p.
- Published in : Atmosph. Chem. Phys. 16 (2016) 13601-13618
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Measurement of iodine species and sulfuric acid using bromide chemical ionization mass spectrometers
/ Wang, Mingyi (Carnegie Mellon U.) ; He, Xu-Cheng (Helsinki U.) ; Finkenzeller, Henning (U. Colorado, Boulder) ; Iyer, Siddharth (Helsinki U.) ; Chen, Dexian (Carnegie Mellon U.) ; Shen, Jiali (Helsinki U.) ; Simon, Mario (Frankfurt U.) ; Hofbauer, Victoria (Carnegie Mellon U.) ; Kirkby, Jasper (CERN ; Frankfurt U.) ; Curtius, Joachim (Frankfurt U.) et al.
Iodine species are important in the marine atmosphere for oxidation and new-particle formation. Understanding iodine chemistry and iodine new-particle formation requires high time resolution, high sensitivity, and simultaneous measurements of many iodine species. [...]
2021 - 16 p.
- Published in : Atmos. Meas. Tech. 14 (2021) 4187-4202
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Calibration of a Chemical Ionization Mass Spectrometer for the Measurement of Gaseous Sulfuric Acid
/ Kürten, Andreas (Goethe U., Frankfurt (main)) ; Rondo, Linda (Goethe U., Frankfurt (main)) ; Ehrhart, Sebastian (Goethe U., Frankfurt (main)) ; Curtius, Joachim (Goethe U., Frankfurt (main))
The accurate measurement of the gaseous sulfuric acid concentration is crucial within many fields of atmospheric science. Instruments utilizing chemical ionization mass spectrometry (CIMS) measuring H2SO4, therefore, require a careful calibration. [...]
2012 - 12 p.
- Published in : J. Phys. Chem. A 116 (2012) 6375-6386
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6.
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Thermodynamics of the formation of sulfuric acid dimers in the binary (H2SO4–H2O) and ternary (H2SO4–H2O–NH3) system
/ Kürten, A (Goethe U., Frankfurt (main)) ; Münch, S (Goethe U., Frankfurt (main)) ; Rondo, L (Goethe U., Frankfurt (main)) ; Bianchi, F (PSI, Villigen ; Zurich, ETH) ; Duplissy, J (CERN) ; Jokinen, T (Helsinki U.) ; Junninen, H (Helsinki U.) ; Sarnela, N (Helsinki U.) ; Schobesberger, S (Helsinki U.) ; Simon, M (Goethe U., Frankfurt (main)) et al.
Sulfuric acid is an important gas influencing atmospheric new particle formation (NPF). Both the binary $(H_2SO_4–H_2O)$ system and the ternary system involving ammonia $(H_2SO_4–H_2O–NH_3)$ may be important in the free troposphere. [...]
2015 - 21 p.
- Published in : Atmosph. Chem. Phys. 15 (2015) 10701-10721
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Evaporation of sulfate aerosols at low relative humidity
/ Tsagkogeorgas, Georgios (TROPOS, Leibniz) ; Roldin, Pontus (Helsinki U. ; Lund U.) ; Duplissy, Jonathan (Helsinki U. ; Helsinki Inst. of Phys.) ; Rondo, Linda (Goethe U., Frankfurt (main)) ; Tröstl, Jasmin (PSI, Villigen) ; Slowik, Jay G (PSI, Villigen) ; Ehrhart, Sebastian (Goethe U., Frankfurt (main)) ; Franchin, Alessandro (Helsinki U.) ; Kürten, Andreas (Goethe U., Frankfurt (main)) ; Amorim, Antonio (Lisbon, CENTRA) et al.
Evaporation of sulfuric acid from particles can be important in the atmospheres of Earth and Venus. However, the equilibrium constant for the dissociation of H2SO4 to bisulfate ions, which is the one of the fundamental parameters controlling the evaporation of sulfur particles, is not well constrained. [...]
2017 - 16 p.
- Published in : Atmos. Chem. Phys. 17 (2017) 8923-8938
External link: Fulltext
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Global atmospheric particle formation from CERN CLOUD measurements
/ Dunne, E M (Leeds U.) ; Gordon, H (CERN) ; Kurten, A ; Almeida, J ; Duplissy, J ; Williamson, C ; Ortega, I K ; Pringle, K J ; Adamov, A ; Baltensperger, U et al.
/CLOUD
Fundamental questions remain about the origin of newly formed atmospheric aerosol particles because data from laboratory measurements have been insufficient to build global models. In contrast, gas-phase chemistry models have been based on laboratory kinetics measurements for decades. [...]
2016 - 6 p.
- Published in : Science 354 (2016) 1119-1124
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10.
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Causes and importance of new particle formation in the present-day and preindustrial atmospheres
/ Gordon, Hamish (Leeds U.) ; Kirkby, Jasper (CERN ; Goethe U., Frankfurt (main)) ; Baltensperger, Urs (PSI, Villigen) ; Bianchi, Federico (Helsinki U.) ; Breitenlechner, Martin (Harvard U. (main)) ; Curtius, Joachim (Goethe U., Frankfurt (main)) ; Dias, Antonio (CERN) ; Dommen, Josef (PSI, Villigen) ; Donahue, Neil M (Carnegie Mellon U.) ; Dunne, Eimear M (Kuopio U.) et al.
New particle formation has been estimated to produce around half of cloud-forming particlesin the present-day atmosphere, via gas-to-particle conversion. Here we assess the importance of newparticle formation (NPF) for both the present-day and the preindustrial atmospheres [...]
2017 - 22 p.
- Published in : J. Geophys. Res. 122 (2017) 8739-8760
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