1
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Patten DR, Paulson AE, Forsman TT, Lee YJ. Predicting Fingerprint Age Based on Ozonolysis Kinetics of Unsaturated Triacylglycerol Degradation. Anal Chem 2023; 95:12047-12053. [PMID: 37531602 DOI: 10.1021/acs.analchem.3c01918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Answering the question, "How old is a fingerprint?", is a highly sought-after aim in forensic science. Despite several decades of studies to find an empirical correlation in fingerprint aging, there has been no reliable method so far. In this study, we attempt to determine the time since deposition (TSD) of aged fingerprints from the chemical profile captured within a matrix-assisted laser desorption/ionization mass spectrometry data set. Our approach is based on the chemical kinetics associated with the ambient ozonolysis of unsaturated triacylglycerols (TGs), a major component in fingerprint lipids. First, ozone concentration and ambient temperature were determined to be the major factors in the degradation of unsaturated TGs. A simple kinetics model is then developed to describe the decay of unsaturated TGs, dictated only by the temperature and ozone concentration. This model is then applied to the degradation of TGs in a mixture of TG standards and multiple individuals' fingerprints. The overall decay of unsaturated TGs follows the pseudo-first-order reaction kinetics, validating our hypothesis; however, there are significant person-to-person variations in the initial abundance of unsaturated TGs and the decay rate, hampering the accurate prediction of TSD unless they are corrected for each individual. Nevertheless, the model's applicability for ambient fingerprint aging data was successfully demonstrated.
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Affiliation(s)
- Daphne R Patten
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Andrew E Paulson
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Trevor T Forsman
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Young Jin Lee
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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2
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Huang JH, Zhang F, Shi YP, Cai JR, Chuang YH, Hu WP, Lee YY, Wang CC. Water Plays Multifunctional Roles in the Intervening Formation of Secondary Organic Aerosols in Ozonolysis of Limonene: A Valence Photoelectron Spectroscopy and Density Functional Theory Study. J Phys Chem Lett 2023; 14:3765-3776. [PMID: 37052309 DOI: 10.1021/acs.jpclett.3c00560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Although water may affect aqueous aerosol chemistry, how it intervenes in the formation of secondary organic aerosols (SOAs) at the molecular level remains elusive. Ozonolysis of limonene is one of the most important sources of indoor SOAs. Here, we report the valence electronic properties of limonene aerosols and SOAs derived from limonene ozonolysis (Lim-SOAs) via aerosol vacuum ultraviolet photoelectron spectroscopy, with a focus on the effects of water on Lim-SOAs. The first vertical ionization energy of limonene aerosols is measured to be 8.79 ± 0.07 eV. While water significantly increases the total photoelectron yield of Lim-SOAs, three photoelectron features attributable to Lim-SOAs each exhibit distinct dependence on the fraction of water in aerosols, implying that different formation pathways and molecular origins are involved in the formation of Lim-SOAs. Combined with density functional theory calculation and mass spectrometry measurements, this study reveals that water, particularly the water dimer, enhances the formation of Lim-SOAs by altering the ozonolysis energetics and pathways by intervening in its Criegee chemistry, acting as both a catalyst and a reactant. The atmospheric implication is discussed.
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Affiliation(s)
- Jhih-Hong Huang
- Department of Chemistry and Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C. 80424
| | - Fuyi Zhang
- Department of Chemistry and Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C. 80424
| | - Yan-Pin Shi
- Department of Chemistry and Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C. 80424
| | - Jia-Rong Cai
- Department of Chemistry and Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C. 80424
| | - Yu-Hsuan Chuang
- Department of Chemistry and Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C. 80424
| | - Wei-Ping Hu
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chiayi, Taiwan, R.O.C. 62102
| | - Yin-Yu Lee
- National Synchrotron Radiation Research Center, Hsinchu, Taiwan, R.O.C. 30076
| | - Chia C Wang
- Department of Chemistry and Aerosol Science Research Center, National Sun Yat-sen University, Kaohsiung, Taiwan, R.O.C. 80424
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3
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Theoretical study about the hydrogen abstraction reactions on methyl acetate on combustion conditions. J Mol Model 2022; 28:226. [DOI: 10.1007/s00894-022-05227-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/08/2022] [Indexed: 11/26/2022]
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4
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Wang L, Wang L. The oxidation mechanism of gas-phase ozonolysis of limonene in the atmosphere. Phys Chem Chem Phys 2021; 23:9294-9303. [PMID: 33885076 DOI: 10.1039/d0cp05803c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Limonene with endo- and exo-double bonds is a significant monoterpene in the atmosphere and has high reactivity towards O3. We investigated the atmospheric oxidation mechanism of limonene ozonolysis using a high level quantum chemistry calculation coupled with RRKM-ME kinetic simulation. The additions of O3 can take place at both the endo- and exo-double bonds with a branching ratio of 0.87 : 0.13, forming four major highly energized CIs* (named Syn-2a*, Syn-2b*, Anti-2b* and Anti-2c*) with the relative higher fractions of 0.21 : 0.35 : 0.27 : 0.11. A yield of 4% for Limona-ketone was obtained as well. For the unimolecular isomerization pathways of limonene + O3 → POZs → CIs* → SOZ, VHP, or dioxirane, five, one, or none of the internal rotations are treated as hindered internal rotors for CIs*. We obtained percentages of 0.59 : 0.18 : 0.14 in total for separate isomerization routes in the formation of VHPs, dioxirane and SOZs from CIs* using the fourth-order Runge-Kutta method. Additionally, a yield of ∼5% was acquired for stabilized CIs compiling the fractions of different addition routes. About ∼10% of stabilized Anti-2b would isomerize to VHP and 90% would isomerize to SOZs. Isomerization to VHPs dominates the fate of stabilized Syn-2a, Syn-2b and Anti-2c. The overall yield of OH radicals was 0.61. Our study suggested a yield of 0.17 for stabilized SOZs and 0.18 for dioxirane, although both their fates are ambiguous.
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Affiliation(s)
- Lingyu Wang
- School of Chemistry & Chemical Engineering, South China University of Technology, 381 Wushan Rd., Guangzhou, 510640, China.
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5
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Tomaz S, Wang D, Zabalegui N, Li D, Lamkaddam H, Bachmeier F, Vogel A, Monge ME, Perrier S, Baltensperger U, George C, Rissanen M, Ehn M, El Haddad I, Riva M. Structures and reactivity of peroxy radicals and dimeric products revealed by online tandem mass spectrometry. Nat Commun 2021; 12:300. [PMID: 33436593 PMCID: PMC7804243 DOI: 10.1038/s41467-020-20532-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/25/2020] [Indexed: 12/02/2022] Open
Abstract
Organic peroxy radicals (RO2) play a pivotal role in the degradation of hydrocarbons. The autoxidation of atmospheric RO2 radicals produces highly oxygenated organic molecules (HOMs), including low-volatility ROOR dimers formed by bimolecular RO2 + RO2 reactions. HOMs can initiate and greatly contribute to the formation and growth of atmospheric particles. As a result, HOMs have far-reaching health and climate implications. Nevertheless, the structures and formation mechanism of RO2 radicals and HOMs remain elusive. Here, we present the in-situ characterization of RO2 and dimer structure in the gas-phase, using online tandem mass spectrometry analyses. In this study, we constrain the structures and formation pathway of several HOM-RO2 radicals and dimers produced from monoterpene ozonolysis, a prominent atmospheric oxidation process. In addition to providing insights into atmospheric HOM chemistry, this study debuts online tandem MS analyses as a unique approach for the chemical characterization of reactive compounds, e.g., organic radicals. Organic peroxy radicals play a pivotal role in producing highly oxygenated organic molecules but the formation mechanisms remain elusive. Here, the authors show in-situ characterization of peroxy radicals and dimer structures in the gas-phase, using online tandem mass spectrometry analyses.
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Affiliation(s)
- Sophie Tomaz
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 69626, Villeurbanne, France
| | - Dongyu Wang
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Nicolás Zabalegui
- Centro de Investigaciones en Bionanociencias (CIBION), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2390, C1425FQD, Ciudad de Buenos Aires, Argentina.,Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, C1428EGA, Buenos Aires, Argentina
| | - Dandan Li
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 69626, Villeurbanne, France
| | - Houssni Lamkaddam
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Franziska Bachmeier
- Institute for Atmospheric and Environmental Sciences, Goethe-University Frankfurt, 60438, Frankfurt am Main, Germany
| | - Alexander Vogel
- Institute for Atmospheric and Environmental Sciences, Goethe-University Frankfurt, 60438, Frankfurt am Main, Germany
| | - María Eugenia Monge
- Centro de Investigaciones en Bionanociencias (CIBION), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2390, C1425FQD, Ciudad de Buenos Aires, Argentina
| | - Sébastien Perrier
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 69626, Villeurbanne, France
| | - Urs Baltensperger
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Christian George
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 69626, Villeurbanne, France
| | - Matti Rissanen
- Institute for Atmospheric and Earth System Research, INAR /Physics, Faculty of Science, University of Helsinki, FI-00014, Helsinki, Finland.,Aerosol Physics Laboratory, Physics Unit, Faculty of Engineering and Natural Sciences, Tampere University, FI-33101, Tampere, Finland
| | - Mikael Ehn
- Institute for Atmospheric and Earth System Research, INAR /Physics, Faculty of Science, University of Helsinki, FI-00014, Helsinki, Finland
| | - Imad El Haddad
- Laboratory of Atmospheric Chemistry, Paul Scherrer Institute, 5232, Villigen, Switzerland
| | - Matthieu Riva
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, 69626, Villeurbanne, France.
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6
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Chen J, Møller KH, Wennberg PO, Kjaergaard HG. Unimolecular Reactions Following Indoor and Outdoor Limonene Ozonolysis. J Phys Chem A 2021; 125:669-680. [DOI: 10.1021/acs.jpca.0c09882] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jing Chen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
| | - Kristian H. Møller
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
| | - Paul O. Wennberg
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, United States
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, United States
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, Copenhagen Ø DK-2100, Denmark
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7
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Witkowski B, Al-Sharafi M, Gierczak T. Ozonolysis of β-Caryophyllonic and Limononic Acids in the Aqueous Phase: Kinetics, Product Yield, and Mechanism. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:8823-8832. [PMID: 31296007 DOI: 10.1021/acs.est.9b02471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Ozonolysis of β-caryophyllonic (BCA) and limononic (LA) acids in the aqueous-phase was investigated. The rate coefficients (kozone) measured for the BCA + ozone (O3) reaction at 295 ± 2 K were 4.8 ± 0.6 × 105 M-1 s-1 at pH = 2 and 6.0 ± 0.3 × 105 M-1 s-1 at pH = 8. The UV-vis absorption cross sections (σ, cm2 molecule-1) for BCA and LA in water were also measured. Atmospheric lifetimes of BCA and LA due to reactions with O3, hydroxyl radicals (OH), and due to photolysis were calculated. Lifetime estimates indicate that the aqueous-phase processing of both terpenoic acids studied in this work would be relevant in the atmosphere. In cloudwater, BCA is more likely to react with O3 with some possible contribution from the oxidation by OH, whereas the opposite is true for LA. Products of BCA and LA ozonolysis were quantified with LC-MS as well as with the UV-vis assays for quantification of formaldehyde and hydroperoxides. Oxygenated derivatives of BCA and LA that were produced following aqueous ozonolysis were identified as keto-BCA and keto-LA, respectively. Additionally, large quantities of intramolecular secondary ozonides and α-acyloxyhydroperoxy aldehydes were tentatively identified as products of aqueous ozonolysis of the two unsaturated terpenoic acids investigated.
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Affiliation(s)
- Bartłomiej Witkowski
- Faculty of Chemistry , University of Warsaw , Al. Żwirki i Wigury 101 , Warsaw , 02-089 , Poland
| | - Mohammed Al-Sharafi
- Faculty of Chemistry , University of Warsaw , Al. Żwirki i Wigury 101 , Warsaw , 02-089 , Poland
| | - Tomasz Gierczak
- Faculty of Chemistry , University of Warsaw , Al. Żwirki i Wigury 101 , Warsaw , 02-089 , Poland
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8
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Campbell SJ, Stevanovic S, Miljevic B, Bottle SE, Ristovski Z, Kalberer M. Quantification of Particle-Bound Organic Radicals in Secondary Organic Aerosol. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:6729-6737. [PMID: 31075990 DOI: 10.1021/acs.est.9b00825] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The chemical composition and evolution of secondary organic aerosol (SOA) in the atmosphere represents one of the largest uncertainties in our current understanding of air quality. Despite vast research, the toxicological mechanisms relating to adverse human health effects upon exposure to particulate matter are still poorly understood. Particle-bound reactive oxygen species (ROS) may substantially contribute to observed health effects by influencing aerosol oxidative potential (OP). The role of radicals in both the formation and aging of aerosol, as well as their contribution to aerosol OP, remains highly uncertain. The profluorescent spin trap BPEAnit (9,10-bis(phenylethynyl)anthracenenitroxide), previously utilized to study combustion-generated aerosol, has been applied to provide the first estimate of particle-bound radical concentrations in SOA. We demonstrate that SOA from different atmospherically important VOC precursors have different particle-bound radical concentrations, estimated for the ozonolysis of α-pinene (0.020 ± 0.0050 nmol/μg), limonene (0.0059 ± 0.0010 nmol/μg), and β-caryophyllene (0.0025 ± 0.00080 nmol/μg), highlighting the potential importance of OH-initiated formation of particle-bound organic radicals. Additionally, the lifetime of particle-bound radical species in α-pinene SOA was estimated, and a pseudo-first-order rate constant of k = 7.3 ± 1.7 × 10-3 s-1 was derived, implying a radical lifetime on the order of minutes.
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Affiliation(s)
- Steven J Campbell
- Centre for Atmospheric Science, Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
- Department of Environmental Sciences , University of Basel , Klingelbergstrasse 27 , 4056 Basel , Switzerland
| | - Svetlana Stevanovic
- International Laboratory for Air Quality and Health , Queensland University of Technology , Brisbane QLD 4001 , Australia
- School of Engineering , Deakin University , Waurn Ponds , 3126 Australia
| | - Branka Miljevic
- International Laboratory for Air Quality and Health , Queensland University of Technology , Brisbane QLD 4001 , Australia
| | - Steven E Bottle
- ARC Centre for Excellence for Free Radical Chemistry and Biotechnology , Queensland University of Technology , Brisbane , QLD 4001 , Australia
| | - Zoran Ristovski
- International Laboratory for Air Quality and Health , Queensland University of Technology , Brisbane QLD 4001 , Australia
| | - Markus Kalberer
- Centre for Atmospheric Science, Department of Chemistry , University of Cambridge , Cambridge CB2 1EW , United Kingdom
- Department of Environmental Sciences , University of Basel , Klingelbergstrasse 27 , 4056 Basel , Switzerland
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9
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10
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Li SS, Yang XY, Xu YS, Jiang L. Identification of the early intermediates formed in ozonolysis of cis-2-butene and limonene: a theoretical and matrix isolation study. RSC Adv 2019; 9:20100-20106. [PMID: 35514704 PMCID: PMC9065574 DOI: 10.1039/c9ra04176a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 06/20/2019] [Indexed: 01/24/2023] Open
Abstract
This study combined quantum chemical calculations and the matrix isolation technique to identify the formation of primary intermediates from the ozonolysis of cis-2-butene and limonene.
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Affiliation(s)
- Shan-shan Li
- Beijing Municipal Research Institute of Environmental Protection
- Beijing 100037
- China
| | - Xiao-yang Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Yi-sheng Xu
- State Key Laboratory of Environmental Criteria and Risk Assessment
- Chinese Research Academy of Environmental Sciences
- Beijing 100012
- China
| | - Lei Jiang
- Beijing Municipal Research Institute of Environmental Protection
- Beijing 100037
- China
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11
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Almatarneh MH, Elayan IA, Poirier RA, Altarawneh M. The ozonolysis of cyclic monoterpenes: a computational review. CAN J CHEM 2018. [DOI: 10.1139/cjc-2017-0587] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Monoterpenes are prevalent organic compounds emitted to the atmosphere, via biogenic activities in various types of plants. Monoterpenes undergo atmospheric decomposition reactions derived by the potent atmospheric oxidizing agents, OH, O3, and NOx. This review critically surveys literature pertinent to the atmospheric removal of monoterpenes by ozone. In general, the ozonolysis reactions of monoterpenes occur through the so-called Criegee mechanism. These classes of reactions generate a wide array of chemical organic and inorganic low vapor pressure (LVP) species. Carbonyl oxides, commonly known as Criegee intermediates (CIs), are the main intermediates from the gas-phase ozonolysis reaction. Herein, we present mechanistic pathways, reactions rate constants, product profiles, thermodynamic, and kinetic results dictating the ozonolysis reactions of selected monoterpenes (namely carene, camphene, limonene, α-pinene, β-pinene, and sabinene). Furthermore, the unimolecular (vinyl hydroperoxide and ester channels) and bimolecular reactions (cycloaddition, insertion, and radical recombination) of the resulting CIs are fully discussed. The orientations and conformations of the resulting primary ozonides (POZs) and CIs of monoterpenes are classified to reveal their plausible effects on reported thermokinetic parameters.
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Affiliation(s)
- Mansour H. Almatarneh
- Department of Chemistry, University of Jordan, Amman 11942, Jordan
- Chemistry Department, Memorial University of Newfoundland, St. John’s, NL A1B 3X7, Canada
| | - Ismael A. Elayan
- Department of Chemistry, University of Jordan, Amman 11942, Jordan
| | - Raymond A. Poirier
- Chemistry Department, Memorial University of Newfoundland, St. John’s, NL A1B 3X7, Canada
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12
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Mackenzie-Rae FA, Karton A, Saunders SM. Computational investigation into the gas-phase ozonolysis of the conjugated monoterpene α-phellandrene. Phys Chem Chem Phys 2016; 18:27991-28002. [PMID: 27711539 DOI: 10.1039/c6cp04695a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Reaction with ozone is a major atmospheric sink for α-phellandrene, a monoterpene found in both indoor and outdoor environments, however experimental literature concerning the reaction is scarce. In this study, high-level G4(MP2) quantum chemical calculations are used to theoretically characterise the reaction of ozone with both double bonds in α-phellandrene for the first time. Results show that addition of ozone to the least substituted double bond in the conjugated system is preferred. Following addition, thermal and chemically activated unimolecular reactions, including the so-called hydroperoxide and ester or 'hot' acid channels, and internal cyclisation reactions, are characterised to major first generation products. Conjugation present in α-phellandrene allows two favourable Criegee intermediate reaction pathways to proceed that have not previously been considered in the literature; namely a 1,6-allyl resonance stabilised hydrogen shift and intramolecular dioxirane isomerisation to an epoxide. These channels are expected to play an important role alongside conventional routes in the ozonolysis of a-phellandrene. Computational characterisation of the potential energy surface thus provides insight into this previously unstudied system, and will aid future mechanism development and experimental interpretation involving α-phellandrene and structurally similar species, to which the results are expected to extend.
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Affiliation(s)
- F A Mackenzie-Rae
- School of Chemistry and Biochemistry, The University of Western Australia, Crawley, WA 6009, Australia.
| | - A Karton
- School of Chemistry and Biochemistry, The University of Western Australia, Crawley, WA 6009, Australia.
| | - S M Saunders
- School of Chemistry and Biochemistry, The University of Western Australia, Crawley, WA 6009, Australia.
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13
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Oliveira RCDM, Bauerfeldt GF. Ozonolysis reactions of monoterpenes: a variational transition state investigation. J Phys Chem A 2015; 119:2802-12. [PMID: 25734376 DOI: 10.1021/jp5129222] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The O3-initiated oxidation reactions of α-pinene ([1S,5S]-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene), β-pinene ([1R,5R]-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane), camphene ([1R,4S]-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane) and sabinene ([1R,5R]-4-methylene-1-(1-methylethyl)bicycle[3.1.0]hexane), four monoterpenes typically emitted into the atmosphere, were studied at the B3LYP/6-31+G(2d,2p) level of theory. The rate coefficients were calculated on the basis of the variational transition state theory for two kinetic models, in order to investigate the reaction mechanism: first assuming a direct bimolecular reaction and the second, assuming the formation of a prebarrier-complex, which further reacts forming the corresponding molozonide. The barrier heights leading to the formation of exo-conformers of the molozonides of α-pinene and camphene are lower than the barrier heights for the formation of the endo-conformers of these molozonides, whereas the inverse trend is observed for β-pinene and sabinene. The canonical variational rate coefficients are found in reasonable agreement with the experimental data, especially when the prebarrier complexes are considered. Microcanonical variational rate coefficients are also calculated, as a final validation test, being found in an expected agreement with the canonical rate coefficients. The best predictions for the rate coefficients at 298 K, based on the microcanonical variational method, for α-pinene, β-pinene, camphene, and sabine are (in units cm(3) molecule(-1) s(-1)): 6.92 × 10(-17), 1.06 × 10(-17), 4.61 × 10(-19), and 4.81 × 10(-17), respectively. Our results suggest that the prebarrier complex is an important specie in the ozone addition mechanism and should be taken into account for the proper description of the overall kinetics.
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Affiliation(s)
- R C de M Oliveira
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro, Rodovia BR465, Km 7, Seropédica, RJ 23890-000, Brazil
| | - G F Bauerfeldt
- Departamento de Química, Universidade Federal Rural do Rio de Janeiro, Rodovia BR465, Km 7, Seropédica, RJ 23890-000, Brazil
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14
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Jokinen T, Sipilä M, Richters S, Kerminen VM, Paasonen P, Stratmann F, Worsnop D, Kulmala M, Ehn M, Herrmann H, Berndt T. Rapid autoxidation forms highly oxidized RO2 radicals in the atmosphere. Angew Chem Int Ed Engl 2014; 53:14596-600. [PMID: 25354339 DOI: 10.1002/anie.201408566] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Indexed: 11/06/2022]
Abstract
Gas-phase oxidation routes of biogenic emissions, mainly isoprene and monoterpenes, in the atmosphere are still the subject of intensive research with special attention being paid to the formation of aerosol constituents. This laboratory study shows that the most abundant monoterpenes (limonene and α-pinene) form highly oxidized RO2 radicals with up to 12 O atoms, along with related closed-shell products, within a few seconds after the initial attack of ozone or OH radicals. The overall process, an intramolecular ROO→QOOH reaction and subsequent O2 addition generating a next R'OO radical, is similar to the well-known autoxidation processes in the liquid phase (QOOH stands for a hydroperoxyalkyl radical). Field measurements show the relevance of this process to atmospheric chemistry. Thus, the well-known reaction principle of autoxidation is also applicable to the atmospheric gas-phase oxidation of hydrocarbons leading to extremely low-volatility products which contribute to organic aerosol mass and hence influence the aerosol-cloud-climate system.
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Affiliation(s)
- Tuija Jokinen
- Leibniz-Institut für Troposphärenforschung, TROPOS, 04318 Leipzig (Germany); Department of Physics, P.O. Box 64, 00014 University of Helsinki (Finland)
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15
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Jokinen T, Sipilä M, Richters S, Kerminen VM, Paasonen P, Stratmann F, Worsnop D, Kulmala M, Ehn M, Herrmann H, Berndt T. Schnelle Autoxidation bildet hochoxidierte RO2-Radikale in der Atmosphäre. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201408566] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Baptista L, Fernandes Francisco L, Dias JF, da Silva EC, Ferreira dos Santos CV, Gil de Mendonça FS, Arbilla G. Theoretical study of Δ-3-(+)-carene oxidation. Phys Chem Chem Phys 2014; 16:19376-85. [PMID: 25102281 DOI: 10.1039/c4cp02627f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, the rate-limiting steps of Δ(3)-carene oxidation by ozone and OH radicals were studied. The thermochemical and kinetic parameters were evaluated using the B3LYP, PBE1PBE and BHandHLYP functionals, coupled cluster methods and the 6-311G(d,p) and 6-311++G(d,p) basis sets. The attack on the double bond may occur in different orientations, leading to different oxidation products. The rate coefficients of each step of the reactions were evaluated using conventional canonical transition-state theory and variational canonical transition-state theory whenever necessary. The theoretical rate coefficient for the ozonolysis mechanism, evaluated at the CCSD(T)/6-31G(d,p)//PBE1PBE/6-311++G(d,p) level, was 2.08 × 10(-17) cm(3) molecule(-1) s(-1). The coefficient for the oxidation initialised by the OH radical, calculated at the BHandHLYP/6-311++G(d,p) level, was 5.06 × 10(-12) cm(3) molecule(-1) s(-1). These values are in reasonable agreement with the experimental results. The importance of these reactions in atmospheric chemistry is discussed.
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Affiliation(s)
- Leonardo Baptista
- Universidade do Estado do Rio de Janeiro, Faculdade de Tecnologia, Departamento de Química e Ambiental, Rodovia Presidente Dutra Km 298, Resende, RJ, Brazil.
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Jiang L, Lan R, Xu YS, Zhang WJ, Yang W. Reaction of stabilized criegee intermediates from ozonolysis of limonene with water: ab initio and DFT study. Int J Mol Sci 2013; 14:5784-805. [PMID: 23481640 PMCID: PMC3634429 DOI: 10.3390/ijms14035784] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 02/07/2013] [Accepted: 03/04/2013] [Indexed: 12/22/2022] Open
Abstract
The mechanism of the chemical reaction of H2O with three stabilized Criegee intermediates (stabCI-OO, stabCI-CH3-OO and stabCIx-OO) produced via the limonene ozonolysis reaction has been investigated using ab initio and DFT (Density Functional Theory) methods. It has been shown that the formation of the hydrogen-bonded complexes is followed by two different reaction pathways, leading to the formation of either OH radicals via water-catalyzed H migration or of α-hydroxy hydroperoxide. Both pathways were found to be essential sources of atmospheric OH radical and H2O2 making a significant contribution to the formation of secondary aerosols in the Earth's atmosphere. The activation energies at the CCSD(T)/6-31G(d) + CF level of theory were found to be in the range of 14.70-21.98 kcal mol-1. The formation of α-hydroxy hydroperoxide for the reaction of stabCIx-OO and H2O with the activation energy of 14.70 kcal mol-1 is identified as the most favorable pathway.
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Affiliation(s)
- Lei Jiang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; E-Mails: (L.J.); (W.-J.Z.); (W.Y.)
- College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Ru Lan
- China Waterborne Transport Research Institute, Beijing 100088, China; E-Mail:
| | - Yi-Sheng Xu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; E-Mails: (L.J.); (W.-J.Z.); (W.Y.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-10-8491-5249; Fax: +86-10-8491-5248
| | - Wen-Jie Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; E-Mails: (L.J.); (W.-J.Z.); (W.Y.)
| | - Wen Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; E-Mails: (L.J.); (W.-J.Z.); (W.Y.)
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Schnell SK, Vlugt TJ, Simon JM, Bedeaux D, Kjelstrup S. Thermodynamics of small systems embedded in a reservoir: a detailed analysis of finite size effects. Mol Phys 2012. [DOI: 10.1080/00268976.2011.637524] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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19
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Paul CE, Rajagopalan A, Lavandera I, Gotor-Fernández V, Kroutil W, Gotor V. Expanding the regioselective enzymatic repertoire: oxidative mono-cleavage of dialkenes catalyzed by Trametes hirsuta. Chem Commun (Camb) 2012; 48:3303-5. [PMID: 22358469 DOI: 10.1039/c2cc17572j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The first report of a biocatalytic regioselective oxidative mono-cleavage of dialkenes was successfully achieved employing a cell-free enzyme preparation from Trametes hirsuta at the expense of molecular oxygen. Selected reactions were performed on a preparative scale affording high to excellent conversions and chemoselectivities.
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Affiliation(s)
- Caroline E Paul
- Department of Organic and Inorganic Chemistry, University of Oviedo, Instituto de Biotecnología de Asturias, Calle Julián Clavería 8, 33006 Oviedo, Spain
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Vereecken L, Francisco JS. Theoretical studies of atmospheric reaction mechanisms in the troposphere. Chem Soc Rev 2012; 41:6259-93. [DOI: 10.1039/c2cs35070j] [Citation(s) in RCA: 311] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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