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Zhang G, Liu M, Han Y, Wang Z, Liu W, Zhang Y, Xu J. The role of aldehydes on sulfur based-new particle formation: a theoretical study. RSC Adv 2024; 14:13321-13335. [PMID: 38694968 PMCID: PMC11061877 DOI: 10.1039/d4ra00952e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/17/2024] [Indexed: 05/04/2024] Open
Abstract
Aldehydes play a crucial role in the formation of atmospheric particles, attracting significant attention due to their environmental impact. However, the microscopic mechanisms underlying the formation of aldehyde-involved particles remain uncertain. In this study, through quantum chemical calculations and molecular dynamics (MD) simulations, we investigate the microscopic formation mechanisms of binary and ternary systems composed of three representative aldehydes, two sulfur-based acids, water, and two bases. Our research findings reveal that the most stable structures of acid-aldehyde clusters involve the connection of acids and aldehyde compounds through hydrogen bonds without involving proton transfer reactions, indicating relatively poor cluster stability. However, with the introduction of a third component, the stability of 18 clusters significantly increase. Among these, in ten systems, acids act as catalysts, facilitating reactions between aldehyde compounds and water or alkaline substances to generate glycols and amino alcohols. However, according to MD simulations conducted at 300 K, these acids readily dissociate from the resulting products. In the remaining eight systems, the most stable structural feature involves ion pairs formed by proton transfer reactions between acids and aldehyde compounds. These clusters exhibit remarkable thermodynamic stability. Furthermore, the acidity of the acid, the nature of nucleophilic agents, and the type of aldehyde all play significant roles in cluster stability and reactivity, and they have synergistic effects on the nucleation process. This study offers microscopic insights into the processes of new particle formation involving aldehydes, contributing to a deeper understanding of atmospheric chemistry at the molecular level.
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Affiliation(s)
- Guohua Zhang
- Jinhua Advanced Research Institute Jinhua Zhejiang 321013 P. R. China
| | - Min Liu
- Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P. R. China
| | - Yaning Han
- Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P. R. China
| | - Zhongteng Wang
- Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P. R. China
| | - Wei Liu
- Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P. R. China
| | - Ying Zhang
- Jinhua Advanced Research Institute Jinhua Zhejiang 321013 P. R. China
| | - Jing Xu
- Department of Optical Engineering, College of Optical, Mechanical and Electrical Engineering, Zhejiang A&F University Hangzhou Zhejiang 311300 P. R. China
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2
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Perraud V, Roundtree K, Morris PM, Smith JN, Finlayson-Pitts BJ. Implications for new particle formation in air of the use of monoethanolamine in carbon capture and storage. Phys Chem Chem Phys 2024; 26:9005-9020. [PMID: 38440810 DOI: 10.1039/d4cp00316k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024]
Abstract
Alkanolamines are currently being deployed in carbon capture and storage (CCS) technology worldwide, and atmospheric emissions have been found to coincide with locations exhibiting elevated concentrations of methanesulfonic acid (MSA). It is thus critical to understand the fate and potential atmospheric reactions of these chemicals. This study reports the characterization of sub-10 nm nanoparticles produced through the acid-base reaction between gas phase monoethanolamine (MEA) and MSA, a product of organosulfur compound oxidation in air, using a flow reactor under dry and humid (up to ∼60% RH) conditions. Number size distribution measurements show that MEA is even more efficient than methylamine in forming nanoparticles on reaction with MSA. This is attributed to the fact that the MEA structure contains both an -NH2 and an -OH group that facilitate hydrogen bonding within the clusters, in addition to the electrostatic interactions. Due to this already strong H-bond network, water has a relatively small influence on new particle formation (NPF) and growth in this system, in contrast to MSA reactions with alkylamines. Acid/base molar ratios of unity for 4-12 nm particles were measured using thermal desorption chemical ionization mass spectrometry. The data indicate that reaction of MEA with MSA may dominate NPF under some atmospheric conditions. Thus, the unique characteristics of alkanolamines in NPF must be taken into account for accurate predictions of impacts of CCS on visibility, health and climate.
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Affiliation(s)
- Véronique Perraud
- Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA.
| | - Kanuri Roundtree
- Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA.
| | - Patricia M Morris
- Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA.
| | - James N Smith
- Department of Chemistry, University of California Irvine, Irvine, CA 92697, USA.
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3
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Huff AK, Love N, Leopold KR. Microwave and Computational Study of Methanesulfonic Acid and Its Complex with Water. J Phys Chem A 2023; 127:3658-3667. [PMID: 37043823 DOI: 10.1021/acs.jpca.3c01395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Spectra of methanesulfonic acid (CH3SO3H, MSA) and its complex with water have been studied by microwave spectroscopy and density functional theory calculations. For the monomer, spectra were obtained for both the parent and -OD isotopologues and, in each case, revealed a pair of tunneling states that are attributed to large amplitude motion of the hydroxyl hydrogen about the S-O(H) bond. Transitions crossing between tunneling states were not found in the parent spectrum and are estimated to be outside the range of the spectrometer, thus precluding the direct determination of the tunneling energy. For the -OD form, however, the tunneling energy was determined to be ΔE = 6471.9274(18) MHz from direct measurement of the cross-state c-type transitions. In its complex with water, the acidic hydrogen of the MSA forms a hydrogen bond with the water oxygen. A secondary hydrogen bond involving the water hydrogen and an SO3 oxygen completes a six-membered ring, forming a cyclic structure typical of hydrated oxyacids. No evidence of internal motion was observed. Rotational spectra of the CH3SO3H···D2O and CH3SO3D···D2O isotopologues were also obtained and analyzed. Comparison with theoretical calculations confirms the cyclic structure, though the orientation of the unbound water hydrogen is ambiguous.
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Affiliation(s)
- Anna K Huff
- Department of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - Nathan Love
- Department of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
| | - Kenneth R Leopold
- Department of Chemistry, University of Minnesota, 207 Pleasant Street, SE, Minneapolis, Minnesota 55455, United States
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4
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Ayoubi D, Knattrup Y, Elm J. Clusteromics V: Organic Enhanced Atmospheric Cluster Formation. ACS OMEGA 2023; 8:9621-9629. [PMID: 36936339 PMCID: PMC10018713 DOI: 10.1021/acsomega.3c00251] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/17/2023] [Indexed: 06/18/2023]
Abstract
Formic acid (FA) is a prominent candidate for organic enhanced nucleation due to its high abundance and stabilizing effect on smaller clusters. Its role in new particle formation is studied through the use of state-of-the-art quantum chemical methods on the cluster systems (acid)1-2(FA)1(base)1-2 with the acids being sulfuric acid (SA)/methanesulfonic acid (MSA) and the bases consisting of ammonia (A), methylamine (MA), dimethylamine (DMA), trimethylamine (TMA), and ethylenediamine (EDA). A funneling approach is used to determine the cluster structures with initial configurations generated through the ABCluster program, followed by semiempirical PM7 and ωB97X-D/6-31++G(d,p) calculations. The final binding free energy is calculated at the DLPNO-CCSD(T0)/aug-cc-pVTZ//ωB97X-D/6-31++G(d,p) level of theory using the quasi-harmonic approximation. Cluster dynamics simulations show that FA has a minuscule or negligible effect on the MSA-FA-base systems as well as most of the SA-FA-base systems. The SA-FA-DMA cluster system shows the highest influence from FA with an enhancement of 21%, compared to its non-FA counterpart.
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Affiliation(s)
- Daniel Ayoubi
- Department
of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Yosef Knattrup
- Department
of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Jonas Elm
- Department
of Chemistry, iClimate, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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5
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Zhang X, Tan S, Chen X, Yin S. Computational chemistry of cluster: Understanding the mechanism of atmospheric new particle formation at the molecular level. CHEMOSPHERE 2022; 308:136109. [PMID: 36007737 DOI: 10.1016/j.chemosphere.2022.136109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/10/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
New particle formation (NPF), which exerts significant influence over human health and global climate, has been a hot topic and rapidly expands field of research in the environmental and atmospheric chemistry recent years. Generally, NPF contains two processes: formation of critical nucleus and further growth of the nucleus. However, due to the complexity of the atmospheric nucleation, which is a multicomponent process, formation of critical clusters as well as their growth is still connected to large uncertainties. Detection limits of instruments in measuring specific gaseous aerosol precursors and chemical compositions at the molecular level call for computational studies. Computational chemistry could effectively compensate the deficiency of laboratory experiments as well as observations and predict the nucleation mechanisms. We review the present theoretical literatures that discuss nucleation mechanism of atmospheric clusters. Focus of this review is on different nucleation systems involving sulfur-containing species, nitrogen-containing species and iodine-containing species. We hope this review will provide a deep insight for the molecular interaction of nucleation precursors and reveal nucleation mechanism at the molecular level.
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Affiliation(s)
- Xiaomeng Zhang
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China
| | - Shendong Tan
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China
| | - Xi Chen
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China
| | - Shi Yin
- MOE & Guangdong Province Key Laboratory of Laser Life Science & Institute of Laser Life Science, Guangzhou Key Laboratory of Spectral Analysis and Functional Probes, College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China.
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6
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Rasmussen FR, Kubečka J, Elm J. Contribution of Methanesulfonic Acid to the Formation of Molecular Clusters in the Marine Atmosphere. J Phys Chem A 2022; 126:7127-7136. [PMID: 36191242 DOI: 10.1021/acs.jpca.2c04468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Because of the lack of long-term measurements, new particle formation (NPF) in the marine atmosphere remains puzzling. Using quantum chemical methods, this study elucidates the cluster formation and further growth of sulfuric acid-methanesulfonic acid-dimethylamine (SA-MSA-DMA) clusters, relevant to NPF in the marine atmosphere. The cluster structures and thermochemical parameters of (SA)n(MSA)m(DMA)l (n + m ≤ 4 and l ≤ 4) systems are calculated using density functional theory at the ωB97X-D/6-31++G(d,p) level of theory, and the single-point energies are calculated using high-level DLPNO-CCSD(T0)/aug-cc-pVTZ calculations. The calculated thermochemistry is used as input to the Atmospheric Cluster Dynamics Code (ACDC) to gain insight into the cluster dynamics. At ambient conditions (298.15 K, 1 atm), we find that the distribution of outgrowing clusters primarily consists of SA and DMA, with a minor contribution from the mixed SA-MSA-DMA clusters. At lower temperature (278.15 K, 1 atm) the distribution broadens, and clusters containing one or more MSA molecules emerge. These findings show that in the cold marine atmosphere MSA likely participates in atmospheric NPF.
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Affiliation(s)
| | - Jakub Kubečka
- Department of Chemistry, Aarhus University, 8000 Aarhus C, Denmark
| | - Jonas Elm
- Department of Chemistry, iClimate, Aarhus University, 8000 Aarhus C, Denmark
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7
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Knattrup Y, Elm J. Clusteromics IV: The Role of Nitric Acid in Atmospheric Cluster Formation. ACS OMEGA 2022; 7:31551-31560. [PMID: 36092558 PMCID: PMC9453938 DOI: 10.1021/acsomega.2c04278] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/11/2022] [Indexed: 06/15/2023]
Abstract
Nitric acid (NA) has previously been shown to affect atmospheric new particle formation; however, its role still remains highly uncertain. Through the employment of state-of-the-art quantum chemical methods, we study the (acid)1-2(base)1-2 and (acid)3(base)2 clusters containing at least one nitric acid (NA) and sulfuric acid (SA) or methanesulfonic acid (MSA) with bases ammonia (A), methylamine (MA), dimethylamine (DMA), trimethylamine (TMA), and ethylenediamine (EDA). The initial cluster configurations are generated using the ABCluster program. PM7 and ωB97X-D/6-31++G(d,p) calculations are used to reduce the number of relevant configurations. The thermochemical parameters are calculated at the ωB97X-D/6-31++G(d,p) level of theory with the quasi-harmonic approximation, and the final single-point energies are calculated with high-level DLPNO-CCSD(T0)/aug-cc-pVTZ calculations. The enhancing effect from the presence of nitric acid on cluster formation is studied using the calculated thermochemical data and cluster dynamics simulations. We find that when NA is in excess compared with the other acids, it has a substantial enhancing effect on the cluster formation potential.
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Affiliation(s)
- Yosef Knattrup
- Department
of Chemistry, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Jonas Elm
- Department
of Chemistry, iClimate, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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8
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Elm J. Clusteromics III: Acid Synergy in Sulfuric Acid-Methanesulfonic Acid-Base Cluster Formation. ACS OMEGA 2022; 7:15206-15214. [PMID: 35572753 PMCID: PMC9089749 DOI: 10.1021/acsomega.2c01396] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/06/2022] [Indexed: 05/24/2023]
Abstract
Acid-base molecular clusters are an important stage in atmospheric new particle formation. While such clusters are most likely multicomponent in nature, there are very few reports on clusters consisting of multiple acid molecules and multiple base molecules. By applying state-of-the-art quantum chemical methods, we herein study electrically neutral (SA)1(MSA)1(base)0-2 clusters with base = ammonia (A), methylamine (MA), dimethylamine (DMA), trimethylamine (TMA) and ethylenediamine (EDA). The cluster structures are obtained using a funneling approach employing the ABCluster program, semiempirical PM7 calculations and ωB97X-D/6-31++G(d,p) calculations. The final binding free energies are calculated at the DLPNO-CCSD(T0)/aug-cc-pVTZ//ωB97X-D/6-31++G(d,p) level of theory using the quasi-harmonic approximation. Based on the calculated cluster geometries and thermochemistry (at 298.15 K and 1 atm), we find that the mixed (SA)1(MSA)1(base)1-2 clusters more resemble the (SA)2(base)1-2 clusters compared to the (MSA)2(base)1-2 clusters. Hence, some of the steric hindrance and lack of hydrogen bond capacity previously observed in the (MSA)2(base)1-2 clusters is diminished in the corresponding (SA)1(MSA)1(base)1-2 clusters. Cluster kinetics simulations reveal that the presence of an MSA molecule in the clusters enhances the cluster formation potential by up to a factor of 20. We find that the SA-MSA-DMA clusters have the highest cluster formation potential, and thus, this system should be further extended to larger sizes in future studies.
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9
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Liu M, Myllys N, Han Y, Wang Z, Chen L, Liu W, Xu J. Microscopic Insights Into the Formation of Methanesulfonic Acid–Methylamine–Ammonia Particles Under Acid-Rich Conditions. Front Ecol Evol 2022. [DOI: 10.3389/fevo.2022.875585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Understanding the microscopic mechanisms of new particle formation under acid-rich conditions is of significance in atmospheric science. Using quantum chemistry calculations, we investigated the microscopic formation mechanism of methanesulfonic acid (MSA)–methylamine (MA)–ammonia (NH3) clusters. We focused on the binary (MSA)2n-(MA)n and ternary (MSA)3n-(MA)n-(NH3)n, (n = 1–4) systems which contain more acid than base molecules. We found that the lowest-energy isomers in each system possess considerable thermodynamic and dynamic stabilities. In studied cluster structures, all bases are protonated, and they form stable ion pairs with MSA, which contribute to the charge transfer and the stability of clusters. MA and NH3 have a synergistic effect on NPF under acid-rich conditions, and the role of NH3 becomes more remarkable as cluster size increases. The excess of MSA molecules does not only enhance the stability of clusters, but provides potential sites for further growth.
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10
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Chen T, Ge Y, Liu Y, He H. N-nitration of secondary aliphatic amines in the particle phase. CHEMOSPHERE 2022; 293:133639. [PMID: 35065182 DOI: 10.1016/j.chemosphere.2022.133639] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/30/2021] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
Amines are frequently detected in atmospheric particles and are internally mixed with other particle-phase components. However, research on the further reactions of amine with reactive species after entering the particle phase is still limited. This study investigated the nitration reaction process of particulate dimethylamine (DMA), formed via a substitution reaction between DMA and (NH4)2SO4, with NOx. In situ attenuated total reflectance-infrared Fourier transform spectroscopy (in situ ATR-FTIR) and proton transfer reaction mass spectroscopy (PTR-MS), as well as DFT methods at the B3LYP level using the 6-311++G (d, p) basis set, were mainly used to confirm the formation of nitramine and nitrosamine in the nitration/nitrosation process of DMA. A hydrogen-bonding intermediate ([(CH3)2N⋯HONO]) is initially formed when particulate DMA reacts with NO2 followed by aminyl radical formation, and then nitr- and nitros-amine form through addition reactions with NO2 and NO, respectively. The dimer of NO2 (i.e., N2O4) and the product of NO and NO2 (i.e., N2O3) can also react with DMA to attack the lone pair electrons on the central N atom of DMA to finally form nitr- and nitros-amine. This study helps reveal the nitration reaction mechanism of organic amines in the particle phase. It also aids in understanding the process of nitrogen cycling in the atmosphere.
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Affiliation(s)
- Tianzeng Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Yanli Ge
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yongchun Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Aerosol and Haze Laboratory, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
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11
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Pysanenko A, Huss T, Fárník M, Lengyel J. Effect of Hydration on Electron Attachment to Methanesulfonic Acid Clusters. J Phys Chem A 2022; 126:1542-1550. [PMID: 35230848 DOI: 10.1021/acs.jpca.2c00221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report an experimental and computational study of the electron-induced chemistry of methanesulfonic acid (MSA, MeSO3H) in clusters. We combine the mass spectra after the 70 eV electron ionization with the negative ion spectra after electron attachment (EA) at low electron energies of 0-15 eV of the MSA molecule, small MSA clusters, and microhydrated MSA clusters to reveal the solvation effects. The MSA/He coexpansion only generates small MSA clusters with up to four molecules, but adding water substantially hydrates the MSA clusters, resulting in clusters composed of 1-2 MSA molecules accompanied by quite a few water molecules. The clustering strongly suppresses the fragmentation of the MSA molecules upon both the positive ionization and EA. The electron-energy-dependent ion yield for different negative ions is measured. For the MSA molecule and pure MSA clusters, EA leads to an H-abstraction yielding MeSO3-. It proceeds efficiently at low electron energies below 2 eV with a shoulder at 3-4 eV and a broad, almost 2 orders of magnitude weaker, peak around 8 eV. The hydrated (H2O)nMeSO3- ions with n ≤ 3 exhibit only a broad peak around 7 eV similar to EA of pure water clusters. Thus, for the small clusters, the electron attachment and hydrogen abstraction from water occur. On the other hand, the larger clusters with n > 4 display a peak below 2 eV, which quickly dominates the spectrum with increasing n. This peak is related to the formation of the H3O+·MeSO3- ion pair upon hydration and subsequent dipole-supported electron attachment followed by the hydronium neutralization and H3O• radical dissociation. The size-resolved experimental data indicate that the ionic dissociation of MSA starts to occur in the neutral MeSO3H(H2O)N clusters with about four water molecules.
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Affiliation(s)
- Andriy Pysanenko
- J. Heyrovský Institute of Physical Chemistry, The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - Tabea Huss
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Michal Fárník
- J. Heyrovský Institute of Physical Chemistry, The Czech Academy of Sciences, Dolejškova 3, 18223 Prague, Czech Republic
| | - Jozef Lengyel
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
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12
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Becker D, Heitland J, Carlsson PTM, Elm J, Olenius T, Tödter S, Kharrazizadeh A, Zeuch T. Real-time monitoring of aerosol particle formation from sulfuric acid vapor at elevated concentrations and temperatures. Phys Chem Chem Phys 2022; 24:5001-5013. [PMID: 35142769 DOI: 10.1039/d1cp04580f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the present study, time-resolved aerosol particle formation from sulfuric acid vapor is examined with special attention to the stabilization of molecular clusters in the early phase of unary nucleation. An important factor governing this process is the amount of condensable acid vapor. Here it is produced from fast gas-phase reactions in a batch-type reaction cell for which we introduce modifications enabling real-time monitoring. The key component for size- and time-resolved detection of ultrafine particles is a new 1 nm-SMPS. With this new tool at hand, the effect of varying the precursor concentration over two orders of magnitude is investigated. We demonstrate the ability to tune between different growth scenarios as indicated by the size-resolved particle traces which exhibit a transition from sigmoidal over quasi-stationary to peak-like shape. The second key parameter relevant for nucleation studies is the temperature-dependent cluster evaporation. Due to a temperature rise during the mixing stage of the experiment, evaporation is strongly promoted in the early phase. Therefore, the present study extends the T-range used in, e.g., smog chambers. We investigate this temperature effect in a kinetic simulation and can successfully combine simulated and measured data for validating theoretical evaporation rates obtained from DLPNO-CCSD(T0)-calculations.
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Affiliation(s)
- Daniel Becker
- Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany.
| | - Jonas Heitland
- Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany.
| | | | - Jonas Elm
- Aarhus Univerity, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Tinja Olenius
- Swedish Meteorological and Hydrological Institute, Air Quality Research Unit, Folkborgsvägen 17, SE-601 76 Norrköping, Sweden
| | - Sophia Tödter
- Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany.
| | - Amir Kharrazizadeh
- Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany.
| | - Thomas Zeuch
- Georg-August-Universität Göttingen, Tammannstraße 6, 37077 Göttingen, Germany.
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13
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Chen J. Studies on the conformation, thermodynamics, and evaporation rate characteristics of sulfuric acid and amines molecular clusters. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022] Open
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14
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Gonçalves DDS, Ghosh A, Chaudhuri P. Vibrational Spectra of Atmospherically Relevant Hydrogen-Bonded MSA···(H 2SO 4) n ( n = 1-3) Clusters. J Phys Chem A 2021; 125:8791-8802. [PMID: 34605656 DOI: 10.1021/acs.jpca.1c05214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methanesulfonic acid (CH3SO3H), also known as MSA, has been found to be capable of forming a strong hydrogen-bonded interaction with sulfuric acid (H2SO4) under ambient conditions. The energetic stability of the MSA···H2SO4 clusters increases with decreasing temperature at higher altitudes in the troposphere, which is relevant in the context of atmospheric aerosol formation. We have performed, in the present work, a detailed and systematic quantum-chemical calculation with high-level density functional theory to characterize the hydrogen bond formation in the binary MSA···H2SO4, ternary MSA···(H2SO4)2, and quaternary MSA···(H2SO4)3 clusters. The five different conformations of MSA···(H2SO4)2 and six conformations of MSA···(H2SO4)3, considered in the present work for the spectroscopic analysis, have been taken from our previous work [J. Phys. Chem. A. 2020, 124, 11072-11085]. The hydrogen bonds were analyzed on the basis of infrared vibrational frequencies of different O-H stretching modes and quantum theory of atoms in molecules (QTAIM). A strong positive correlation has been observed between the red shift of the OH groups in MSA and H2SO4 and the corresponding O-H elongation as a result of hydrogen bond formation. Topological analysis employing QTAIM shows that most of the charge density and the Laplacian values at bond critical points (BCPs) of the hydrogen bonds of the MSA···(H2SO4)n (n = 1-3) complexes fall within the standard hydrogen-bond criteria. However, those outside these criteria fall in the category of a very strong hydrogen bond with a hydrogen bond length as low as 1.41 Å and an O-H bond elongation as high as 0.096 Å. In general, the charge densities of the BCPs located on hydrogen bonds increase as the hydrogen-bond lengths decrease. Proportionately, a larger number of hydrogen bonds in ternary MSA···(H2SO4)2 demonstrate a partial covalent character when compared with the quaternary clusters.
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Affiliation(s)
| | - Angsula Ghosh
- Department of Physics, Federal University of Amazonas, 69077-000 Manaus, Amazonas, Brazil
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15
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Elm J. Clusteromics II: Methanesulfonic Acid-Base Cluster Formation. ACS OMEGA 2021; 6:17035-17044. [PMID: 34250361 PMCID: PMC8264942 DOI: 10.1021/acsomega.1c02115] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/11/2021] [Indexed: 05/21/2023]
Abstract
The role of methanesulfonic acid (MSA) in atmospheric new particle formation remains highly uncertain. Using state-of-the-art computational methods, we study the electrically neutral (MSA)0-2(base)0-2 clusters, with base = ammonia (A), methylamine (MA), dimethylamine (DMA), trimethylamine (TMA), and ethylenediamine (EDA). The cluster configurations are obtained using the ABCluster program and the number of initial cluster configurations is reduced based on PM7 calculations. Thermochemical parameters are calculated using the quasi-harmonic approximation based on the ωB97X-D/6-31++G(d,p) cluster structures and vibrational frequencies. The single point energies are calculated at the DLPNO-CCSD(T0)/aug-cc-pVTZ level of theory. We find that MSA shows a different interaction pattern with the bases compared to sulfuric acid and does not simply follow the basicity of the bases for these small clusters. In all cases, we find that the MSA-base clusters show very low cluster formation potential, indicating that electrically neutral clusters consisting solely of MSA as the clustering acid are most likely not capable of forming and growing under realistic atmospheric conditions.
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Affiliation(s)
- Jonas Elm
- Department of Chemistry and
iClimate, Aarhus University, Aarhus 8000, Denmark
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16
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Ma F, Xie HB, Li M, Wang S, Zhang R, Chen J. Autoxidation mechanism for atmospheric oxidation of tertiary amines: Implications for secondary organic aerosol formation. CHEMOSPHERE 2021; 273:129207. [PMID: 33349467 DOI: 10.1016/j.chemosphere.2020.129207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 11/30/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
Tertiary amines are one kind of identified amines in the atmosphere. Here, the atmospheric oxidation mechanism and kinetics of tertiary amines were investigated by using computational methods. As proxies of these amines, trimethylamine (TMA) and triethylamine (TEA) have been selected. Results indicate that N-containing peroxy radicals (NRO2⋅), which are key intermediates in ⋅OH initiated oxidation of TMA and TEA, can follow a so-called autoxidation mechanism (a chain reaction of H-shift followed by O2 addition) even on the condition of high NO/HO2⋅ concentration. Such unique mechanism can be ascribed to the ability of N-atom in facilitating the unimolecular H-shift of NRO2⋅ and the absence of H-atoms on N-atom. However, different from TMA reaction system, the pathway dissociating into fragmental products can compete with the autoxidation pathway for TEA system. More importantly, TEA reaction system cannot lead to the formation of products with high O/C ratio due to the autoxidation pathway terminated by the release of fragmental molecules. Such difference can be corroborated by previously observing lower secondary organic aerosol yield of TEA oxidation than that of TMA oxidation. The unveiled mechanism enhances current understanding on atmospheric fate of amines and autoxidation mechanism.
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Affiliation(s)
- Fangfang Ma
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, 77843, United States
| | - Hong-Bin Xie
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
| | - Mingxue Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China
| | - Sainan Wang
- State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
| | - Renyi Zhang
- Department of Atmospheric Sciences, Texas A&M University, College Station, TX, 77843, United States
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian, 116024, China.
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17
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Dingilian K, Lippe M, Kubečka J, Krohn J, Li C, Halonen R, Keshavarz F, Reischl B, Kurtén T, Vehkamäki H, Signorell R, Wyslouzil BE. New Particle Formation from the Vapor Phase: From Barrier-Controlled Nucleation to the Collisional Limit. J Phys Chem Lett 2021; 12:4593-4599. [PMID: 33971093 PMCID: PMC8154860 DOI: 10.1021/acs.jpclett.1c00762] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/19/2021] [Indexed: 06/12/2023]
Abstract
Studies of vapor phase nucleation have largely been restricted to one of two limiting cases-nucleation controlled by a substantial free energy barrier or the collisional limit where the barrier is negligible. For weakly bound systems, exploring the transition between these regimes has been an experimental challenge, and how nucleation evolves in this transition remains an open question. We overcome these limitations by combining complementary Laval expansion experiments, providing new particle formation data for carbon dioxide over a uniquely broad range of conditions. Our experimental data together with a kinetic model using rate constants from high-level quantum chemical calculations provide a comprehensive picture of new particle formation as nucleation transitions from a barrier-dominated process to the collisional limit.
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Affiliation(s)
- Kayane
K. Dingilian
- William
G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Martina Lippe
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir-Prelog-Weg2, 8093 Zürich, Switzerland
| | - Jakub Kubečka
- Institute
for Atmospheric and Earth System Research/Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Jan Krohn
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir-Prelog-Weg2, 8093 Zürich, Switzerland
| | - Chenxi Li
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir-Prelog-Weg2, 8093 Zürich, Switzerland
| | - Roope Halonen
- Institute
for Atmospheric and Earth System Research/Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Fatemeh Keshavarz
- Institute
for Atmospheric and Earth System Research/Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Bernhard Reischl
- Institute
for Atmospheric and Earth System Research/Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Theo Kurtén
- Department
of Chemistry, Faculty of Science, University
of Helsinki, FI-00014 Helsinki, Finland
| | - Hanna Vehkamäki
- Institute
for Atmospheric and Earth System Research/Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland
| | - Ruth Signorell
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, Vladimir-Prelog-Weg2, 8093 Zürich, Switzerland
| | - Barbara E. Wyslouzil
- William
G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
- Department
of Chemistry and Biochemistry, The Ohio
State University, Columbus, Ohio 43210, United States
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18
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Rosati B, Christiansen S, Wollesen de Jonge R, Roldin P, Jensen MM, Wang K, Moosakutty SP, Thomsen D, Salomonsen C, Hyttinen N, Elm J, Feilberg A, Glasius M, Bilde M. New Particle Formation and Growth from Dimethyl Sulfide Oxidation by Hydroxyl Radicals. ACS EARTH & SPACE CHEMISTRY 2021; 5:801-811. [PMID: 33889792 PMCID: PMC8054244 DOI: 10.1021/acsearthspacechem.0c00333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 05/30/2023]
Abstract
Dimethyl sulfide (DMS) is produced by plankton in oceans and constitutes the largest natural emission of sulfur to the atmosphere. In this work, we examine new particle formation from the primary pathway of oxidation of gas-phase DMS by OH radicals. We particularly focus on particle growth and mass yield as studied experimentally under dry conditions using the atmospheric simulation chamber AURA. Experimentally, we show that aerosol mass yields from oxidation of 50-200 ppb of DMS are low (2-7%) and that particle growth rates (8.2-24.4 nm/h) are comparable with ambient observations. An HR-ToF-AMS was calibrated using methanesulfonic acid (MSA) to account for fragments distributed across both the organic and sulfate fragmentation table. AMS-derived chemical compositions revealed that MSA was always more dominant than sulfate in the secondary aerosols formed. Modeling using the Aerosol Dynamics, gas- and particle-phase chemistry kinetic multilayer model for laboratory CHAMber studies (ADCHAM) indicates that the Master Chemical Mechanism gas-phase chemistry alone underestimates experimentally observed particle formation and that DMS multiphase and autoxidation chemistry is needed to explain observations. Based on quantum chemical calculations, we conclude that particle formation from DMS oxidation in the ambient atmosphere will most likely be driven by mixed sulfuric acid/MSA clusters clustering with both amines and ammonia.
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Affiliation(s)
- Bernadette Rosati
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
- Faculty
of Physics, University of Vienna, Boltzmanngasse 5, Vienna AT-1090, Austria
| | - Sigurd Christiansen
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | | | - Pontus Roldin
- Division
of Nuclear Physics, Lund University, P.O. Box 118, Lund SE-221
00, Sweden
| | - Mads Mørk Jensen
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Kai Wang
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Shamjad P. Moosakutty
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
- Clean Combustion
Research Center, King Abdullah University
of Science and Technology, Thuwal KSA-23955, Saudi Arabia
| | - Ditte Thomsen
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Camilla Salomonsen
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Noora Hyttinen
- Nano
and Molecular Systems Research Unit, University
of Oulu, P.O. Box 3000, Oulu FI-90014, Finland
- Department
of Applied Physics, University of Eastern
Finland, P.O. Box 1627, Kuopio FI-70211, Finland
| | - Jonas Elm
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Anders Feilberg
- Department
of Biological and Chemical Engineering, Aarhus University, Finlandsgade
12, Aarhus N DK-8200, Denmark
| | - Marianne Glasius
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Merete Bilde
- Department
of Chemistry, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
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19
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Elm J. Clusteromics I: Principles, Protocols, and Applications to Sulfuric Acid-Base Cluster Formation. ACS OMEGA 2021; 6:7804-7814. [PMID: 33778292 PMCID: PMC7992168 DOI: 10.1021/acsomega.1c00306] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/02/2021] [Indexed: 05/13/2023]
Abstract
We recently coined the term clusteromics as a holistic approach for obtaining insight into the chemical complexity of atmospheric molecular cluster formation and at the same time providing the foundation for thermochemical databases that can be utilized for developing machine learning models. Here, we present the first paper in the series that applies state-of-the-art computational methods to study multicomponent (SA)0-2(base)0-2 clusters, with SA = sulfuric acid and base = [ammonia (A), methylamine (MA), dimethylamine (DMA), trimethylamine (TMA), and ethylenediamine (EDA)] with all combinations of the five bases. The initial cluster configurations are obtained using the ABCluster program and the number of relevant configurations are reduced based on PM7 and ωB97X-D/6-31++G(d,p) calculations. Thermochemical parameters are calculated based on the ωB97X-D/6-31++G(d,p) cluster structures and vibrational frequencies using the quasi-harmonic approximation. The single-point energies are refined with a high-level DLPNO-CCSD(T0)/aug-cc-pVTZ calculation. Using the calculated thermochemical data, we perform kinetics simulations to evaluate the potential of these small (SA)0-2(base)0-2 clusters to grow into larger cluster sizes. In all cases we find that having more than one type of base molecule present in the cluster will increase the potential for forming larger clusters primarily due to the increased available vapor concentration.
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Affiliation(s)
- Jonas Elm
- Department of Chemistry and
iClimate, Aarhus University, 8000 Aarhus C, Denmark
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20
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Zhang Q, Jia S, Yang L, Krishnan P, Zhou S, Shao M, Wang X. New particle formation (NPF) events in China urban clusters given by sever composite pollution background. CHEMOSPHERE 2021; 262:127842. [PMID: 32799146 DOI: 10.1016/j.chemosphere.2020.127842] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/12/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
New Particle Formation (NPF) refers to transformation of gaseous precursors in the atmosphere due to nucleation and subsequent growth process through physicochemical interaction. It has generated a lot of interest due to its profound impact on global and regional environment, climate and human health. We reviewed the studies on NPF in three city clusters of China: the North China Plain, the Yangtze River Delta and the Pearl River Delta obtained through experiment simulations (e.g., chamber simulation, flow-tube simulation, etc.), field observations, and numerical simulations. Due to its atmospheric background pollution and strong oxidation capacities resulting in high source rate of precursors, China's atmosphere possesses challenges different from those evaluated in previous studies on cleaning sites and other developing countries. Hence, NPF events can simultaneously exhibit high condensable sink, formation rate and growth rate. In addition, the high intensity of anthropogenic emissions in urban China has led to greater diversity of pollutant species involved in NPF nucleation and subsequent growth, compared to the dominant role of biogenic precursors at cleaning sites. Differences in geographical location and industrial structure also lead to significant distinctions in NPF characteristics of the three city clusters. Consequently, the lack of understanding of nucleation mechanism of complexly polluted background sites makes the global and regional climate models with submodels based on clean background have enormous uncertainty when applied to urban China. The establishment of a mature research ecosystem including field observations, laboratory simulations and numerical simulations is the key to the breakthrough of NPF research in China.
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Affiliation(s)
- Qi Zhang
- School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, 510275, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, PR China
| | - Shiguo Jia
- School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, 510275, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, PR China; Guangdong Provincial Field Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, Guangzhou, 510275, PR China.
| | - Liming Yang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 117576, Singapore
| | - Padmaja Krishnan
- Department of Civil & Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore, 117576, Singapore
| | - Shengzhen Zhou
- School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, 510275, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, PR China; Guangdong Provincial Field Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, Guangzhou, 510275, PR China
| | - Min Shao
- Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, PR China
| | - Xuemei Wang
- Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, PR China.
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21
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de Souza Gonçalves D, Chaudhuri P. Atmospherically Relevant Hydrogen-Bonded Interactions between Methanesulfonic Acid and H 2SO 4 Clusters: A Computational Study. J Phys Chem A 2020; 124:11072-11085. [PMID: 33337158 DOI: 10.1021/acs.jpca.0c09087] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A detailed and systematic quantum-chemical calculation has been performed with high-level density functional theory (DFT) to analyze the electrostatic interaction of methanesulfonic acid (CH3SO3H), also known as MSA, with pre-formed clusters of sulfuric acid (H2SO4) molecules in ambient conditions. Both MSA and H2SO4 are considered as atmospheric molecules that might play active roles in aerosol formation. The interactions between MSA and H2SO4 clusters lead to the formation of MSA···(H2SO4)n (n = 2, 3) complexes stabilized by the formation of different types of intermolecular hydrogen bond networks. Analyses of cluster binding energies and free energy changes associated with their formation indicate that MSA could bring additional stability into the atmospheric molecular clusters responsible for aerosol formation. Variations of Gibbs free energy with temperature and pressure have been analyzed. The lower temperatures and pressures at the higher altitudes of the troposphere are found to play in favor of higher stability of the MSA···(H2SO4)n clusters. Effects of hydrogen bond formation on dipole moment, mean polarizability, and anisotropy of polarizability of the clusters have been analyzed. Rayleigh scattering intensities are found to increase many-fold when light interacts with the MSA···(H2SO4)n clusters.
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22
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Shen J, Elm J, Xie HB, Chen J, Niu J, Vehkamäki H. Structural Effects of Amines in Enhancing Methanesulfonic Acid-Driven New Particle Formation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:13498-13508. [PMID: 33091300 DOI: 10.1021/acs.est.0c05358] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Atmospheric amines can enhance methanesulfonic acid (MSA)-driven new particle formation (NPF), but the mechanism is fundamentally different compared to that of the extensively studied sulfuric acid (SA)-driven process. Generally, the enhancing potentials of amines in SA-driven NPF follow the basicity, while this is not the case for MSA-driven NPF, where structural effects dominate, making MSA-driven NPF more prominent for methylamine (MA) compared to dimethylamine (DMA). Therefore, probing structural factors determining the enhancing potentials of amines on MSA-driven NPF is key to fully understanding the contribution of MSA to NPF. Here, we performed a comparative study on DMA and MA enhancing MSA-driven NPF by examining cluster formation using computational methods. The results indicate that DMA-MSA clusters are more stable than the corresponding MA-MSA clusters for cluster sizes up to (DMA)2(MSA)2, indicating that the basicity of amines dominates the initial cluster formation. The methyl groups of DMA were found to present significant steric hindrance beyond the (DMA)2(MSA)2 cluster and this adds to the lower hydrogen bonding capacity of DMA, making the cluster growth less favorable compared to MA. This study implies that several amines could synergistically enhance MSA-driven NPF by maximizing the advantage of different amines in different amine-MSA cluster growth stages.
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Affiliation(s)
- Jiewen Shen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jonas Elm
- Department of Chemistry and iClimate, Aarhus University, Langelandsgade 140, Aarhus C DK-8000, Denmark
| | - Hong-Bin Xie
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Junfeng Niu
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Hanna Vehkamäki
- Institute for Atmospheric and Earth System Research/Physics, University of Helsinki, P.O. Box 64 Gustaf Hällströmin katu 2a, Helsinki FI-00014, Finland
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23
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Perraud V, Xu J, Gerber RB, Finlayson-Pitts BJ. Integrated experimental and theoretical approach to probe the synergistic effect of ammonia in methanesulfonic acid reactions with small alkylamines. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2020; 22:305-328. [PMID: 31904037 DOI: 10.1039/c9em00431a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
While new particle formation events have been observed worldwide, our fundamental understanding of the precursors remains uncertain. It has been previously shown that small alkylamines and ammonia (NH3) are key actors in sub-3 nm particle formation through reactions with acids such as sulfuric acid (H2SO4) and methanesulfonic acid (CH3S(O)(O)OH, MSA), and that water also plays a role. Because NH3 and amines co-exist in air, we carried out combined experimental and theoretical studies examining the influence of the addition of NH3 on particle formation from the reactions of MSA with methylamine (MA) and trimethylamine (TMA). Experiments were performed in a 1 m flow reactor at 1 atm and 296 K. Measurements using an ultrafine condensation particle counter (CPC) and a scanning mobility particle sizer (SMPS) show that new particle formation was systematically enhanced upon simultaneous addition of NH3 to the MSA + amine binary system, with the magnitude depending on the amine investigated. For the MSA + TMA reaction system, the addition of NH3 at ppb concentrations produced a much greater effect (i.e. order of magnitude more particles) than the addition of ∼12 000 ppm water (corresponding to ∼45-50% relative humidity). The effect of NH3 on the MSA + MA system, which is already very efficient in forming particles on its own, was present but modest. Calculations of energies, partial charges and structures of small cluster models of the multi-component particles likewise suggest synergistic effects due to NH3 in the presence of MSA and amine. The local minimum structures and the interactions involved suggest mechanisms for this effect.
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Affiliation(s)
- Véronique Perraud
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
| | - Jing Xu
- Department of Optical Engineering, Zhejiang A&F University, Lin'an 311300, Zhejiang, China
| | - R Benny Gerber
- Department of Chemistry, University of California, Irvine, CA 92697, USA. and Institute of Chemistry, The Fritz Haber Research Center, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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24
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Formation and growth of sub-3-nm aerosol particles in experimental chambers. Nat Protoc 2020; 15:1013-1040. [DOI: 10.1038/s41596-019-0274-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 11/27/2019] [Indexed: 11/08/2022]
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25
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Chen D, Wang W, Li D, Wang W. Atmospheric implication of synergy in methanesulfonic acid–base trimers: a theoretical investigation. RSC Adv 2020; 10:5173-5182. [PMID: 35498315 PMCID: PMC9049051 DOI: 10.1039/c9ra08760e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/24/2019] [Indexed: 11/27/2022] Open
Abstract
Synergy between molecules is ubiquitous in atmospheric clusters and significantly affects new particle formation (NPF). Herein, the effects of the synergy between base molecules on the stability and evaporation of MSA–X–Y (MSA = methanesulfonic acid; X, Y = ammonia (A), methylamine (M), or dimethylamine (D)) trimers were investigated via density functional theory (DFT) and the atmospheric clusters dynamic code (ACDC) method. The results show that proton transfer from MSA to X is exothermal and barrierless due to the synergy between X and Y molecules in MSA–X–Y trimers compared with MSA-X dimers. Cyclic hydrogen bonds are a typical characteristic of the stable trimers. Topological analysis using atoms in molecules (AIM) theory indicates that the electron density (ρ) and Laplacian of the electron density (∇2ρ) at the bond critical points (BCPs) in the trimers exceed the standard range of hydrogen bonds. The affinity for attaching a Y molecule to the MSA–X dimers and the substitution of Y1 (Y = A and MA) by Y2 (Y2 = MA and DMA) in the MSA–X–Y trimers are thermodynamically spontaneous. In addition, the cyclic stabilization energy of the MSA–X–Y trimers increased as the alkalinities of X and Y increased. The total evaporation rate of the trimers decreased as the alkalinities of X and Y increased. Low temperature and high pressure significantly facilitate the formation of trimers. It is further confirmed that synergy plays an important role in atmospheric NPF events. The effects of synergy of between X and Y on the stability of MSA–X–Y trimers were investigated via quantum chemical and kinetics simulation method.![]()
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Affiliation(s)
- Dongping Chen
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
| | - Weina Wang
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
| | - Danfeng Li
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
| | - Wenliang Wang
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710119
- P. R. China
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26
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Waller SE, Yang Y, Castracane E, Kreinbihl JJ, Nickson KA, Johnson CJ. Electrospray Ionization-Based Synthesis and Validation of Amine-Sulfuric Acid Clusters of Relevance to Atmospheric New Particle Formation. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:2267-2277. [PMID: 31506909 DOI: 10.1007/s13361-019-02322-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 08/12/2019] [Accepted: 08/12/2019] [Indexed: 06/10/2023]
Abstract
Atmospheric new particle formation (NPF) is the process by which atmospheric trace gases such as sulfuric acid, ammonia, and amines cluster and grow into climatically relevant particles. The mechanism by which these particles form and grow has remained unclear, in large part due to difficulties in obtaining molecular-level information about the clusters as they grow. Mass spectrometry-based methods using electrospray ionization (ESI) as a cluster source have shed light on this process, but the produced cluster distributions have not been rigorously validated against experiments performed in atmospheric conditions. Ionic clusters are produced by ESI of solutions containing the amine and bisulfate or by spraying a sulfuric acid solution and introducing trace amounts of amine gas into the ESI environment. The amine content of clusters can be altered by increasing the amount of amine introduced into the ESI environment, and certain cluster compositions can only be made by the vapor exchange method. Both approaches are found to yield clusters with the same structures. Aminium bisulfate cluster distributions produced in a controlled and isolated ESI environment can be optimized to closely resemble those observed by chemical ionization in the CLOUD chamber at CERN. These studies indicate that clusters generated by ESI are also observed in traditional atmospheric measurements, which puts ESI mass spectrometry-based studies on firmer footing and broadens the scope of traditional mass spectrometry experiments that may be applied to NPF.
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Affiliation(s)
- Sarah E Waller
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Yi Yang
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Eleanor Castracane
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - John J Kreinbihl
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Kathleen A Nickson
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA
| | - Christopher J Johnson
- Department of Chemistry, Stony Brook University, 100 Nicolls Road, Stony Brook, NY, 11794, USA.
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27
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Ma F, Xie HB, Elm J, Shen J, Chen J, Vehkamäki H. Piperazine Enhancing Sulfuric Acid-Based New Particle Formation: Implications for the Atmospheric Fate of Piperazine. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:8785-8795. [PMID: 31287292 DOI: 10.1021/acs.est.9b02117] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Piperazine (PZ), a cyclic diamine, is one of 160 detected atmospheric amines and an alternative solvent to the widely used monoethanolamine in post-combustion CO2 capture. Participating in H2SO4 (sulfuric acid, SA)-based new particle formation (NPF) could be an important removal pathway for PZ. Here, we employed quantum chemical calculations and kinetics modeling to evaluate the enhancing potential of PZ on SA-based NPF by examining the formation of PZ-SA clusters. The results indicate that PZ behaves more like a monoamine in stabilizing SA and can enhance SA-based NPF at the parts per trillion (ppt) level. The enhancing potential of PZ is less than that of the chainlike diamine putrescine and greater than that of dimethylamine, which is one of the strongest enhancing agents confirmed by ambient observations and experiments. After the initial formation of the (PZ)1(SA)1 cluster, the cluster mainly grows by gradual addition of SA or PZ monomer, followed by addition of (PZ)1(SA)1 cluster. We find that the ratio of PZ removal by NPF to that by the combination of NPF and oxidations is 0.5-0.97 at 278.15 K. As a result, we conclude that participation in the NPF pathway could significantly alter the environmental impact of PZ compared to only considering oxidation pathways.
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Affiliation(s)
- Fangfang Ma
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Hong-Bin Xie
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Jonas Elm
- Department of Chemistry and iClimate , Aarhus University , Langelandsgade 140 , DK- 8000 Aarhus C , Denmark
| | - Jiewen Shen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Jingwen Chen
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology , Dalian University of Technology , Dalian 116024 , China
| | - Hanna Vehkamäki
- Institute for Atmospheric and Earth System Research/Physics , University of Helsinki , P.O. Box 64, Gustaf Hällströmin katu 2a , FI-00014 Helsinki , Finland
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28
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Zhao F, Feng YJ, Liu YR, Jiang S, Huang T, Wang ZH, Xu CX, Huang W. Enhancement of Atmospheric Nucleation by Highly Oxygenated Organic Molecules: A Density Functional Theory Study. J Phys Chem A 2019; 123:5367-5377. [PMID: 31199633 DOI: 10.1021/acs.jpca.9b03142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
New particle formation (NPF) by gas-particle conversion is the main source of atmospheric aerosols. Highly oxygenated organic molecules (HOMs) and sulfuric acid (SA) are important NPF participants. 2-Methylglyceric acid (MGA), a kind of HOMs, is a tracer of isoprene-derived secondary organic aerosols. The nucleation mechanisms of MGA with SA were studied using density functional theory and atmospheric cluster dynamics simulation in this study, along with that of MGA with methanesulfonic acid (MSA) as a comparison. Our theoretical works indicate that the (MGA)(SA) and (MGA)(MSA) clusters are the most stable ones in the (MGA) i(SA) j ( i = 1-2, j = 1-2) and (MGA) i(MSA) j ( i = 1-2, j = 1-2) clusters, respectively. Both the formation rates of (MGA)(SA) and (MGA)(MSA) clusters are quite large and could have significant contributions to NPF. The results imply that the homomolecular nucleation of MGA is unlikely to occur in the atmosphere, and MGA and SA can effectively contribute to heteromolecular nucleation mainly in the form of heterodimers. MSA exhibits properties similar to SA in its ability to form clusters with MGA but is slightly weaker than SA.
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Affiliation(s)
- Feng Zhao
- Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics & Fine Mechanics , Chinese Academy of Sciences , Hefei , Anhui 230031 , China.,School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Ya-Juan Feng
- School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Yi-Rong Liu
- School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Shuai Jiang
- School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Teng Huang
- Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics & Fine Mechanics , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Zi-Hang Wang
- School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Cai-Xin Xu
- School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Wei Huang
- Laboratory of Atmospheric Physico-Chemistry, Anhui Institute of Optics & Fine Mechanics , Chinese Academy of Sciences , Hefei , Anhui 230031 , China.,School of Information Science and Technology , University of Science and Technology of China , Hefei , Anhui 230026 , China.,Center for Excellent in Urban Atmospheric Environment, Institute of Urban Environment , Chinese Academy of Sciences , Xiamen , Fujian 361021 , China
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29
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Finlayson‐Pitts BJ. Multiphase chemistry in the troposphere: It all starts … and ends … with gases. INT J CHEM KINET 2019. [DOI: 10.1002/kin.21305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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30
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Ogunronbi KE, Sepehri A, Chen B, Wyslouzil BE. Vapor phase nucleation of the short-chain n-alkanes (n-pentane, n-hexane and n-heptane): Experiments and Monte Carlo simulations. J Chem Phys 2018; 148:144312. [DOI: 10.1063/1.5023567] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Kehinde E. Ogunronbi
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
| | - Aliasghar Sepehri
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804, USA
| | - Bin Chen
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803-1804, USA
| | - Barbara E. Wyslouzil
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
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31
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Sebastianelli P, Cometto PM, Pereyra RG. Systematic Characterization of Gas Phase Binary Pre-Nucleation Complexes Containing H2SO4 + X, [ X = NH3, (CH3)NH2, (CH3)2NH, (CH3)3N, H2O, (CH3)OH, (CH3)2O, HF, CH3F, PH3, (CH3)PH2, (CH3)2PH, (CH3)3P, H2S, (CH3)SH, (CH3)2S, HCl, (CH3)Cl)]. A Computational Study. J Phys Chem A 2018; 122:2116-2128. [DOI: 10.1021/acs.jpca.7b10205] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paolo Sebastianelli
- Fa.M.A.F., Universidad Nacional de Córdoba, Medina Allende s/n, Ciudad Universitaria, X5000HUA Córdoba, Argentina
- FCEyN, Universidad Nacional de La Pampa, Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina
| | - Pablo M. Cometto
- FCEyN, Universidad Nacional de La Pampa, Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina
- Atmospheric Chemical Physics Laboratory, INCITAP-CONICET, Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina
| | - Rodolfo G. Pereyra
- Fa.M.A.F., Universidad Nacional de Córdoba, Medina Allende s/n, Ciudad Universitaria, X5000HUA Córdoba, Argentina
- IFEG-CONICET, Medina Allende s/n, Ciudad
Universitaria, X5000HUA Córdoba, Argentina
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32
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Xu J, Perraud V, Finlayson-Pitts BJ, Gerber RB. Uptake of water by an acid–base nanoparticle: theoretical and experimental studies of the methanesulfonic acid–methylamine system. Phys Chem Chem Phys 2018; 20:22249-22259. [DOI: 10.1039/c8cp03634a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Uptake of water by nanoparticles composed by methanesulfonic acid and methylamine using a combination of theoretical calculations and laboratory experiments.
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Affiliation(s)
- Jing Xu
- Department of Chemistry
- University of California
- Irvine
- USA
| | | | | | - R. Benny Gerber
- Department of Chemistry
- University of California
- Irvine
- USA
- Institute of Chemistry
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33
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Miao SK, Jiang S, Peng XQ, Liu YR, Feng YJ, Wang YB, Zhao F, Huang T, Huang W. Hydration of the methanesulfonate–ammonia/amine complex and its atmospheric implications. RSC Adv 2018; 8:3250-3263. [PMID: 35541186 PMCID: PMC9077587 DOI: 10.1039/c7ra12064h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 12/28/2017] [Indexed: 11/30/2022] Open
Abstract
Methanesulfonate (MSA−), found in substantial concentrations in the atmosphere, is expected to enhance aerosol nucleation and the growth of nanoparticles, but the details of methanesulfonate clusters are poorly understood. In this study, MSA− was chosen along with ammonia (NH3) or three common amines and water (H2O) to discuss the roles of ternary homogeneous nucleation and ion-induced nucleation in aerosol formation. We studied the structural characteristics and thermodynamics of the clusters using density functional theory at the PW91PW91/6-311++G(3df,3pd) level. The analysis of noncovalent interactions predicts that the amines can form more stable clusters with MSA− than NH3, in agreement with the results from structures and thermodynamics; however, the enhancement in stability for amines is not large enough to overcome the difference in the concentrations of NH3 and amines under typical atmospheric conditions. In addition, the favorable free energies of formation for the (MSA−)(NH3/amines)(H2O)n (n = 0–3) clusters at 298.15 K show that MSA− could contribute to the aerosol nucleation process with binding NH3/amines and H2O up to n = 3. There are strong temperature and humidity dependences for the formation of complexes; higher humidity and temperature promote the formation of larger hydrates. Finally, for the (MSA−)(NH3/amines)(H2O)n clusters, the evaporation rates were determined to further investigate the atmospheric implications. Methanesulfonate (MSA−), found in substantial concentrations in the atmosphere, is expected to enhance aerosol nucleation and the growth of nanoparticles, but the details of methanesulfonate clusters are poorly understood.![]()
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Affiliation(s)
- Shou-Kui Miao
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei
- China
| | - Shuai Jiang
- School of Information Science and Technology
- University of Science and Technology of China
- Hefei
- China
| | - Xiu-Qiu Peng
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei
- China
| | - Yi-Rong Liu
- School of Information Science and Technology
- University of Science and Technology of China
- Hefei
- China
| | - Ya-Juan Feng
- School of Information Science and Technology
- University of Science and Technology of China
- Hefei
- China
| | - Yan-Bing Wang
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei
- China
| | - Feng Zhao
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei
- China
| | - Teng Huang
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei
- China
| | - Wei Huang
- Laboratory of Atmospheric Physico-Chemistry
- Anhui Institute of Optics & Fine Mechanics
- Chinese Academy of Sciences
- Hefei
- China
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34
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Xu J, Finlayson-Pitts BJ, Gerber RB. Nanoparticles grown from methanesulfonic acid and methylamine: microscopic structures and formation mechanism. Phys Chem Chem Phys 2017; 19:31949-31957. [PMID: 29177355 DOI: 10.1039/c7cp06489f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mechanisms of particle formation and growth in the atmosphere are of great interest due to their impacts on climate, health and visibility. However, the microscopic structures and related properties of the smallest nanoparticles are not known. In this paper we pursue computationally a microscopic description for the formation and growth of methanesulfonic acid (MSA) and methylamine (MA) particles under dry conditions. Energetic and dynamics simulations were used to assess the stabilities of proposed model structures for these particles. Density functional theory (DFT) and semi-empirical (PM3) calculations suggest that (MSA-MA)4 is a major intermediate in the growth process, with the dissociation energies, enthalpies and free energies indicating considerable stability for this cluster. Dynamics simulations show that this species is stable for at least 100 ps at temperatures up to 500 K, well above atmospheric temperatures. In order to reach experimentally detectable sizes (>1.4 nm), continuing growth is suggested to occur via clustering of (MSA-MA)4. The dimer (MSA-MA)4(MSA-MA)4 may be one of the smaller experimentally measured particles. Step by step addition of MSA to (MSA-MA)4, is also a likely potential growth mechanism when MSA is excess. In addition, an MSA-MA crystal is predicted to exist. These studies demonstrate that computations of particle structure and dynamics in the nano-size range can be useful for molecular level understanding of processes that grow clusters into detectable particles.
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Affiliation(s)
- Jing Xu
- Department of Chemistry, University of California, Irvine, CA 92697, USA.
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35
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Zhao H, Jiang X, Du L. Contribution of methane sulfonic acid to new particle formation in the atmosphere. CHEMOSPHERE 2017; 174:689-699. [PMID: 28199945 DOI: 10.1016/j.chemosphere.2017.02.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 02/05/2017] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
Methane sulfonic acid (MSA) is present in substantial concentrations in the gas phase over oceans and coastal regions. We present an investigation into the contribution of MSA to new particle formation with the common atmospheric aerosol nucleation precursors including MSA, methanol, formic acid, acetone, dimethylether, formaldehyde, methyl formate, by making use a quantum chemical approach. Density functional theory calculations indicate that these bimolecular complexes are characterized by the presence of strong inter-molecular hydrogen bonds (SOH⋯O) with large binding energies and thermodynamic equilibrium constants. Topological analysis employing quantum theory of atoms in molecules shows that the charge density of the SOH⋯O hydrogen bonds of the MSA complexes falls in the range of hydrogen bonding criteria, but the Laplacian at bond critical points exceeds the range, which is due to the strong hydrogen bonding interactions. In all the studied complexes, the electrostatic interactions are found to be the main attractive force by localized molecular orbital energy decomposition analysis. All these indicate the environmental fate of MSA could play the role of nucleation centers in new particle formation. The effect of the atmospheric heights (0-12 km) was also considered. The Gibbs free energy of formation decreases with the increase of the atmospheric height owing to the decrease of the atmospheric temperature and pressure. The calculated Gibbs free energies of formation within the atmospheric temperature and pressure range could help to understand the atmospheric pollution.
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Affiliation(s)
- Hailiang Zhao
- Environment Research Institute, Shandong University, Shanda South Road 27, 250100 Shandong, China
| | - Xiaotong Jiang
- Environment Research Institute, Shandong University, Shanda South Road 27, 250100 Shandong, China
| | - Lin Du
- Environment Research Institute, Shandong University, Shanda South Road 27, 250100 Shandong, China.
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36
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Xu J, Finlayson-Pitts BJ, Gerber RB. Proton Transfer in Mixed Clusters of Methanesulfonic Acid, Methylamine, and Oxalic Acid: Implications for Atmospheric Particle Formation. J Phys Chem A 2017; 121:2377-2385. [DOI: 10.1021/acs.jpca.7b01223] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Xu
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
| | | | - R. Benny Gerber
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
- Institute
of Chemistry, Fritz Haber Research Center, Hebrew University of Jerusalem, Jerusalem 91904, Israel
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37
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Arquero KD, Gerber RB, Finlayson-Pitts BJ. The Role of Oxalic Acid in New Particle Formation from Methanesulfonic Acid, Methylamine, and Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:2124-2130. [PMID: 28117992 DOI: 10.1021/acs.est.6b05056] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Atmospheric particles are notorious for their effects on human health and visibility and are known to influence climate. Though sulfuric acid and ammonia/amines are recognized as main contributors to new particle formation (NPF), models and observations have indicated that other species may be involved. It has been shown that nucleation from methanesulfonic acid (MSA) and amines, which is enhanced with added water, can also contribute to NPF. While organics are ubiquitous in air and likely to be involved in NPF by stabilizing small clusters for further growth, their effects on the MSA-amine system are not known. This work investigates the effect of oxalic acid (OxA) on NPF from the reaction of MSA and methylamine (MA) at 1 atm and 294 K in the presence and absence of water vapor using an aerosol flow reactor. OxA and MA do not efficiently form particles even in the presence of water, but NPF is enhanced when adding MSA to OxA-MA with and without water. The addition of OxA to MSA-MA mixtures yields a modest NPF enhancement, whereas the addition of OxA to MSA-MA-H2O has no effect. Possible reasons for these effects are discussed.
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Affiliation(s)
- Kristine D Arquero
- Department of Chemistry, University of California, Irvine , Irvine, California 92697, United States
| | - R Benny Gerber
- Department of Chemistry, University of California, Irvine , Irvine, California 92697, United States
- Institute of Chemistry, Fritz Haber Research Center, Hebrew University of Jerusalem , Jerusalem 91904, Israel
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38
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Chen H, Finlayson-Pitts BJ. New Particle Formation from Methanesulfonic Acid and Amines/Ammonia as a Function of Temperature. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:243-252. [PMID: 27935699 DOI: 10.1021/acs.est.6b04173] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Previous studies have shown that methanesulfonic acid (MSA) reacts with amines and ammonia to form particles, which is expected to be particularly important in coastal and agricultural areas. We present the first systematic study of temperature dependence of particle formation from the reactions of MSA with trimethylamine (TMA), dimethylamine (DMA), methylamine (MA), and ammonia over the range of 21-28 °C and 0.4-5.9 s in a flow reactor under dry conditions and in the presence of 3 × 1017 cm-3 water vapor. Overall activation energies (Eoverall) for particle formation calculated from the dependence of rates of particle formation on temperature for all of these bases are negative. The negative Eoverall is interpreted in terms of reverse reactions that decompose intermediate clusters in competition with the forward reactions that grow the clusters into particles. The average values of Eoverall for the formation of detectable particles are: TMA, -(168 ± 19) kcal mol-1; DMA, -(134 ± 30) kcal mol-1; MA, -(68 ± 23) kcal mol-1; NH3, -(110 ± 16) kcal mol-1 (±1σ). The strong inverse dependence of particle formation with temperature suggests that particle formation may not decline proportionally with concentrations of MSA and amines if temperature also decreases, for example at higher altitudes or in winter.
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Affiliation(s)
- Haihan Chen
- Department of Chemistry, University of California, Irvine , Irvine, California 92697, United States
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39
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Fairhurst MC, Ezell MJ, Finlayson-Pitts BJ. Knudsen cell studies of the uptake of gaseous ammonia and amines onto C3–C7 solid dicarboxylic acids. Phys Chem Chem Phys 2017; 19:26296-26309. [DOI: 10.1039/c7cp05252a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
While atmospheric particles affect health, visibility and climate, the details governing their formation and growth are poorly understood on a molecular level.
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40
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Arquero KD, Xu J, Gerber RB, Finlayson-Pitts BJ. Particle formation and growth from oxalic acid, methanesulfonic acid, trimethylamine and water: a combined experimental and theoretical study. Phys Chem Chem Phys 2017; 19:28286-28301. [PMID: 29028063 DOI: 10.1039/c7cp04468b] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combined experimental-theoretical study on the effect of oxalic acid on particle formation and growth from the reaction of MSA with trimethylamine in the absence and presence of water.
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Affiliation(s)
| | - Jing Xu
- Department of Chemistry
- University of California
- Irvine
- USA
| | - R. Benny Gerber
- Department of Chemistry
- University of California
- Irvine
- USA
- Institute of Chemistry
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41
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Finlayson-Pitts BJ. Introductory lecture: atmospheric chemistry in the Anthropocene. Faraday Discuss 2017; 200:11-58. [DOI: 10.1039/c7fd00161d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The term “Anthropocene” was coined by Professor Paul Crutzen in 2000 to describe an unprecedented era in which anthropogenic activities are impacting planet Earth on a global scale. Greatly increased emissions into the atmosphere, reflecting the advent of the Industrial Revolution, have caused significant changes in both the lower and upper atmosphere. Atmospheric reactions of the anthropogenic emissions and of those with biogenic compounds have significant impacts on human health, visibility, climate and weather. Two activities that have had particularly large impacts on the troposphere are fossil fuel combustion and agriculture, both associated with a burgeoning population. Emissions are also changing due to alterations in land use. This paper describes some of the tropospheric chemistry associated with the Anthropocene, with emphasis on areas having large uncertainties. These include heterogeneous chemistry such as those of oxides of nitrogen and the neonicotinoid pesticides, reactions at liquid interfaces, organic oxidations and particle formation, the role of sulfur compounds in the Anthropocene and biogenic–anthropogenic interactions. A clear and quantitative understanding of the connections between emissions, reactions, deposition and atmospheric composition is central to developing appropriate cost-effective strategies for minimizing the impacts of anthropogenic activities. The evolving nature of emissions in the Anthropocene places atmospheric chemistry at the fulcrum of determining human health and welfare in the future.
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42
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Wyslouzil BE, Wölk J. Overview: Homogeneous nucleation from the vapor phase—The experimental science. J Chem Phys 2016; 145:211702. [DOI: 10.1063/1.4962283] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Affiliation(s)
- Barbara E. Wyslouzil
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, USA
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, USA
| | - Judith Wölk
- Department of Chemistry, Physical Chemistry, Universität zu Köln, Luxemburger Str. 116, 50939 Köln, Germany
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43
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Ge Y, Liu Y, Chu B, He H, Chen T, Wang S, Wei W, Cheng S. Ozonolysis of Trimethylamine Exchanged with Typical Ammonium Salts in the Particle Phase. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:11076-11084. [PMID: 27626464 DOI: 10.1021/acs.est.6b04375] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Alkylamines contribute to both new particle formation and brown carbon. The toxicity of particle-phase amines is of great concern in the atmospheric chemistry community. Degradation of particulate amines may lead to secondary products in the particle phase, which are associated with changes in the adverse health impacts of aerosols. In this study, O3 oxidation of particulate trimethylamine (TMA) formed via heterogeneous uptake of TMA by (NH4)2SO4, NH4HSO4, NH4NO3 and NH4Cl, was investigated with in situ attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and proton transfer reaction mass spectrometry (PTR-MS). HCOOH, HCHO, CH3N═CH2, (CH3)2NCHO, CH3NO2, CH3N(OH)CHO, CH3NHOH and H2O were identified as products on all the substrates based upon IR (one-dimensional IR and two-dimensional correlation infrared spectroscopy), quantum chemical calculation and PTR-MS results. A reaction mechanism was proposed to explain the observed products. This work demonstrates that oxidation might be a degradation pathway of particulate amines in the atmosphere. This will aid in understanding the fate of particulate amines formed by nucleation and heterogeneous uptake and their potential health impacts during atmospheric aging.
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Affiliation(s)
- Yanli Ge
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Yongchun Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021, China
- University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Biwu Chu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021, China
- University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Hong He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences , Xiamen 361021, China
- University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Tianzeng Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
- University of Chinese Academy of Sciences , Beijing, 100049, China
| | - Shaoxin Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , Beijing, 100085, China
| | - Wei Wei
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology , Beijing 100022, China
| | - Shuiyuan Cheng
- Key Laboratory of Beijing on Regional Air Pollution Control, Beijing University of Technology , Beijing 100022, China
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An advanced modeling study on the impacts and atmospheric implications of multiphase dimethyl sulfide chemistry. Proc Natl Acad Sci U S A 2016; 113:11776-11781. [PMID: 27688763 DOI: 10.1073/pnas.1606320113] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Oceans dominate emissions of dimethyl sulfide (DMS), the major natural sulfur source. DMS is important for the formation of non-sea salt sulfate (nss-SO42-) aerosols and secondary particulate matter over oceans and thus, significantly influence global climate. The mechanism of DMS oxidation has accordingly been investigated in several different model studies in the past. However, these studies had restricted oxidation mechanisms that mostly underrepresented important aqueous-phase chemical processes. These neglected but highly effective processes strongly impact direct product yields of DMS oxidation, thereby affecting the climatic influence of aerosols. To address these shortfalls, an extensive multiphase DMS chemistry mechanism, the Chemical Aqueous Phase Radical Mechanism DMS Module 1.0, was developed and used in detailed model investigations of multiphase DMS chemistry in the marine boundary layer. The performed model studies confirmed the importance of aqueous-phase chemistry for the fate of DMS and its oxidation products. Aqueous-phase processes significantly reduce the yield of sulfur dioxide and increase that of methyl sulfonic acid (MSA), which is needed to close the gap between modeled and measured MSA concentrations. Finally, the simulations imply that multiphase DMS oxidation produces equal amounts of MSA and sulfate, a result that has significant implications for nss-SO42- aerosol formation, cloud condensation nuclei concentration, and cloud albedo over oceans. Our findings show the deficiencies of parameterizations currently used in higher-scale models, which only treat gas-phase chemistry. Overall, this study shows that treatment of DMS chemistry in both gas and aqueous phases is essential to improve the accuracy of model predictions.
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Perraud V, Horne JR, Martinez AS, Kalinowski J, Meinardi S, Dawson ML, Wingen LM, Dabdub D, Blake DR, Gerber RB, Finlayson-Pitts BJ. The future of airborne sulfur-containing particles in the absence of fossil fuel sulfur dioxide emissions. Proc Natl Acad Sci U S A 2015; 112:13514-9. [PMID: 26483454 PMCID: PMC4640726 DOI: 10.1073/pnas.1510743112] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Sulfuric acid (H2SO4), formed from oxidation of sulfur dioxide (SO2) emitted during fossil fuel combustion, is a major precursor of new airborne particles, which have well-documented detrimental effects on health, air quality, and climate. Another precursor is methanesulfonic acid (MSA), produced simultaneously with SO2 during the atmospheric oxidation of organosulfur compounds (OSCs), such as dimethyl sulfide. In the present work, a multidisciplinary approach is used to examine how contributions of H2SO4 and MSA to particle formation will change in a large coastal urban area as anthropogenic fossil fuel emissions of SO2 decline. The 3-dimensional University of California Irvine-California Institute of Technology airshed model is used to compare atmospheric concentrations of gas phase MSA, H2SO4, and SO2 under current emissions of fossil fuel-associated SO2 and a best-case futuristic scenario with zero fossil fuel sulfur emissions. Model additions include results from (i) quantum chemical calculations that clarify the previously uncertain gas phase mechanism of formation of MSA and (ii) a combination of published and experimental estimates of OSC emissions, such as those from marine, agricultural, and urban processes, which include pet waste and human breath. Results show that in the zero anthropogenic SO2 emissions case, particle formation potential from H2SO4 will drop by about two orders of magnitude compared with the current situation. However, particles will continue to be generated from the oxidation of natural and anthropogenic sources of OSCs, with contributions from MSA and H2SO4 of a similar order of magnitude. This could be particularly important in agricultural areas where there are significant sources of OSCs.
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Affiliation(s)
- Véronique Perraud
- Department of Chemistry, University of California Irvine, Irvine, CA 92697
| | - Jeremy R Horne
- Department of Mechanical & Aerospace Engineering, University of California Irvine, Irvine, CA 92697
| | - Andrew S Martinez
- Department of Mechanical & Aerospace Engineering, University of California Irvine, Irvine, CA 92697
| | - Jaroslaw Kalinowski
- Institute of Chemistry and the Fritz Haber Research Center, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; Department of Chemistry, University of Helsinki, FIN-00014 Helsinki, Finland
| | - Simone Meinardi
- Department of Chemistry, University of California Irvine, Irvine, CA 92697
| | - Matthew L Dawson
- Department of Mechanical & Aerospace Engineering, University of California Irvine, Irvine, CA 92697
| | - Lisa M Wingen
- Department of Chemistry, University of California Irvine, Irvine, CA 92697
| | - Donald Dabdub
- Department of Mechanical & Aerospace Engineering, University of California Irvine, Irvine, CA 92697
| | - Donald R Blake
- Department of Chemistry, University of California Irvine, Irvine, CA 92697
| | - R Benny Gerber
- Department of Chemistry, University of California Irvine, Irvine, CA 92697; Institute of Chemistry and the Fritz Haber Research Center, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; Department of Chemistry, University of Helsinki, FIN-00014 Helsinki, Finland
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46
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Chen H, Varner ME, Gerber RB, Finlayson-Pitts BJ. Reactions of Methanesulfonic Acid with Amines and Ammonia as a Source of New Particles in Air. J Phys Chem B 2015; 120:1526-36. [DOI: 10.1021/acs.jpcb.5b07433] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haihan Chen
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - Mychel E. Varner
- Department of Chemistry, University of California, Irvine, California 92697, United States
| | - R. Benny Gerber
- Department of Chemistry, University of California, Irvine, California 92697, United States
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