Massabò, Dario - Risultato della ricerca

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Molecular Understanding of the Enhancement in Organic Aerosol Mass at High Relative Humidity / Surdu, Mihnea ; Lamkaddam, Houssni ; Wang, Dongyu S ; Bell, David M ; Xiao, Mao ; Lee, Chuan Ping ; Li, Dandan ; Caudillo, Lucía ; Marie, Guillaume ; Scholz, Wiebke et al.
The mechanistic pathway by which high relative humidity (RH) affects gas–particle partitioning remains poorly understood, although many studies report increased secondary organic aerosol (SOA) yields at high RH. Here, we use real-time, molecular measurements of both the gas and particle phase to provide a mechanistic understanding of the effect of RH on the partitioning of biogenic oxidized organic molecules (from α-pinene and isoprene) at low temperatures (243 and 263 K) at the CLOUD chamber at CERN. [...]
2023 - 13 p. - Published in : Environ. Sci. Technol. 57 (2023) 2297-2309 Fulltext: PDF;

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Iodine oxoacids enhance nucleation of sulfuric acid particles in the atmosphere / He, Xu-Cheng (Helsinki U. ; Carnegie Mellon U. ; Helsinki Inst. of Phys.) ; Simon, Mario (Frankfurt U., FIAS ; Frankfurt U.) ; Iyer, Siddharth (Tampere U. of Tech.) ; Xie, Hong-Bin (Shanghai Jiao Tong U.) ; Rörup, Birte (Helsinki U.) ; Shen, Jiali (Helsinki U.) ; Finkenzeller, Henning (Colorado U. ; Colorado U., CIRES) ; Stolzenburg, Dominik (Helsinki U. ; Vienna U.) ; Zhang, Rongjie (Shanghai Jiao Tong U.) ; Baccarini, Andrea (PSI, Villigen ; Ecole Polytechnique, Lausanne) et al.
The main nucleating vapor in the atmosphere is thought to be sulfuric acid (H2SO4), stabilized by ammonia (NH3). However, in marine and polar regions, NH3 is generally low, and H2SO4 is frequently found together with iodine oxoacids [HIOx, i.e., iodic acid (HIO3) and iodous acid (HIO2)]. [...]
2023 - 7 p. - Published in : Science 382 (2023) adh2526 Manuscript: PDF;

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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 Fulltext: PDF;

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Synergistic HNO$_{3}$–H$_{2}$SO$_{4}$–NH$_{3}$ upper tropospheric particle formation / Wang, Mingyi ; Xiao, Mao ; Bertozzi, Barbara ; Marie, Guillaume ; Rörup, Birte ; Schulze, Benjamin ; Bardakov, Roman ; He, Xu-Cheng ; Shen, Jiali ; Scholz, Wiebke et al.
New particle formation in the upper free troposphere is a major global source of cloud condensation nuclei (CCN). However, the precursor vapours that drive the process are not well understood. [...]
2022 - 7 p. - Published in : Nature 605 (2022) 483-489 Fulltext: PDF;

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Chemical composition of nanoparticles from α-pinene nucleation and the influence of isoprene and relative humidity at low temperature / Caudillo, Lucía (Frankfurt U.) ; Rörup, Birte (Helsinki U.) ; Heinritzi, Martin (Frankfurt U.) ; Marie, Guillaume (Frankfurt U.) ; Simon, Mario (Frankfurt U.) ; Wagner, Andrea C (U. Colorado, Boulder) ; Müller, Tatjana (Frankfurt U. ; Mainz, Max Planck Inst.) ; Granzin, Manuel (Frankfurt U.) ; Amorim, Antonio (Lisbon U.) ; Ataei, Farnoush (TROPOS, Leibniz) et al.
Biogenic organic precursors play an important role in atmospheric new particle formation (NPF). One of the major precursor species is α-pinene, which upon oxidation can form a suite of products covering a wide range of volatilities. Highly oxygenated organic molecules (HOMs) comprise a fraction of the oxidation products formed [...]
2021 - 16 p. - Published in : Atmos. Chem. Phys. 21 (2021) 17099-17114

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