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Zhang R, Wang G, Guo S, Zamora ML, Ying Q, Lin Y, Wang W, Hu M, Wang Y. Formation of urban fine particulate matter. Chem Rev 2015; 115:3803-55. [PMID: 25942499 DOI: 10.1021/acs.chemrev.5b00067] [Citation(s) in RCA: 473] [Impact Index Per Article: 52.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Renyi Zhang
- §State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, People's Republic of China
| | | | - Song Guo
- §State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, People's Republic of China
| | | | | | | | | | - Min Hu
- §State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, People's Republic of China
| | - Yuan Wang
- #Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91125, United States
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Fatemi MH, Moghaddam MR. Quantitative structure-property prediction of ion-molecule rate constants for proton transfer reaction between H3O+ and volatile organic compound. JOURNAL OF MASS SPECTROMETRY : JMS 2012; 47:574-580. [PMID: 22549992 DOI: 10.1002/jms.3000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A quantitative structure-property relationship (QSPR) study based on multiple linear regression (MLR) and artificial neural network (ANN) techniques was carried out to investigate the ion-molecules rate constants for proton transfer reaction between hydronuim ion (H(3)O(+)) and some important volatile organic compounds (VOCs). A collection of 50 VOCs was chosen as data set that was randomly divided into three groups, training, internal and external test sets consist of 40, 5 and 5 molecules, respectively. A total of five independent variables selected by stepwise multilinear regression are electronic, geometric, topological type descriptors. The ANN model was developed by using the five descriptors appearing in the MLR model as inputs. Among developed models, the best QSPR model was the ANN model that produced a reasonable level of mean square error MSE(train) = 0.021, MSE(external) = 0.186, MSE(internal) = 0.110. The rate constants calculated by this model are in very good agreement with experimental values. The result of this study reveals the applicability of QSPR approaches in prediction of ion-molecules rate constants for proton transfer reaction of VOCs from their molecular structural descriptors.
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Abstract
Oxidation of isoprene by the hydroxyl radical leads to tropospheric ozone formation. Consequently, a more complete understanding of this reaction could lead to better models of regional air quality, a better understanding of aerosol formation, and a better understanding of reaction kinetics and dynamics. The most common first step in the oxidation of isoprene is the formation of an adduct, with the hydroxyl radical adding to one of four unsaturated carbon atoms in isoprene. In this paper, we discuss how the initial conformations of isoprene, s-trans and s-gauche, influences the pathways to adduct formation. We explore the formation of pre-reactive complexes at low and high temperatures, which are often invoked to explain the negative temperature dependence of this reaction's kinetics. We show that at higher temperatures the free energy surface indicates that a pre-reactive complex is unlikely, while at low temperatures the complex exists on two reaction pathways. The theoretical results show that at low temperatures all eight pathways possess negative reaction barriers, and reaction energies that range from -36.7 to -23.0 kcal x mol(-1). At temperatures in the lower atmosphere, all eight pathways possess positive reaction barriers that range from 3.8 to 6.0 kcal x mol(-1) and reaction energies that range from -28.8 to -14.4 kcal x mol(-1).
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Affiliation(s)
- Marco A. Allodi
- Department of Chemistry, Center for Molecular Design, Hamilton College, 198 College Hill Road, Clinton, NY 13323
| | - Karl N. Kirschner
- Department of Chemistry, Center for Molecular Design, Hamilton College, 198 College Hill Road, Clinton, NY 13323
| | - George C. Shields
- Department of Chemistry, Center for Molecular Design, Hamilton College, 198 College Hill Road, Clinton, NY 13323
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Theoretical Investigation of Atmospheric Oxidation of Biogenic Hydrocarbons: A Critical Review. ADVANCES IN QUANTUM CHEMISTRY 2008. [DOI: 10.1016/s0065-3276(07)00210-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Suh I, Zhao J, Zhang R. Unimolecular decomposition of aromatic bicyclic alkoxy radicals and their acyclic radicals. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2006.08.145] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zhao J, Zhang R, Fortner EC, North SW. Quantification of Hydroxycarbonyls from OH−Isoprene Reactions. J Am Chem Soc 2004; 126:2686-7. [PMID: 14995170 DOI: 10.1021/ja0386391] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hydroxycarbonyls arising from OH-initiated reactions of isoprene have been quantified by the technique of a flow reactor coupled to proton-transfer reaction mass spectrometry (PTR-MS) detection. The yields of C5- and C4-hydroxycarbonyls are (19.3 +/- 6.1)% and (3.3 +/- 1.6)%, respectively, measured at a flow tube pressure of about 100 Torr and at a temperature of 298 +/- 2 K. A yield of (8.4 +/- 2.4)% is obtained for the unsaturated carbonyl C5H8O, confirming that internal OH addition represents the minor channel in the initial OH-isoprene reaction. The results show that those carbonyl compounds account for the most previously unquantified carbon, enabling the isoprene carbon closure. The study also reveals novel aspects of the delta-hydroxyalkoxy radical degradation mechanism, which is essential for modeling tropospheric O3 formation. In addition, this work demonstrates the application of PTR-MS for quantification of products of hydrocarbon reactions, which should have profound impacts on elucidation of the chemistry of atmospheric anthropogenic and biogenic hydrocarbons.
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Affiliation(s)
- Jun Zhao
- Department of Atmospheric Sciences, Texas A&M University, College Station, Texas 77843, USA.
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Campuzano-Jost P, Williams MB, D'Otton L, Hynes AJ. Kinetics and Mechanism of the Reaction of the Hydroxyl Radical with h8-Isoprene and d8-Isoprene: Isoprene Absorption Cross Sections, Rate Coefficients, and the Mechanism of Hydroperoxyl Radical Production. J Phys Chem A 2004. [DOI: 10.1021/jp0363601] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P. Campuzano-Jost
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, Florida 33149-1098
| | - M. B. Williams
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, Florida 33149-1098
| | - L. D'Otton
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, Florida 33149-1098
| | - A. J. Hynes
- Division of Marine and Atmospheric Chemistry, Rosenstiel School of Marine and Atmospheric Science, 4600 Rickenbacker Causeway, Miami, Florida 33149-1098
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Zhang D, Zhang R, North SW. Experimental Study of NO Reaction with Isoprene Hydroxyalkyl Peroxy Radicals. J Phys Chem A 2003. [DOI: 10.1021/jp0360016] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dan Zhang
- Department of Atmospheric Sciences, Department of Chemistry, Texas A&M University, College Station, Texas 77843
| | - Renyi Zhang
- Department of Atmospheric Sciences, Department of Chemistry, Texas A&M University, College Station, Texas 77843
| | - Simon W. North
- Department of Atmospheric Sciences, Department of Chemistry, Texas A&M University, College Station, Texas 77843
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Zhang D, Zhang R, Church C, North SW. Experimental study of hydroxyalkyl peroxy radicals from OH-initiated reactions of isoprene. Chem Phys Lett 2001. [DOI: 10.1016/s0009-2614(01)00654-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Suh I, Lei W, Zhang R. Experimental and Theoretical Studies of Isoprene Reaction with NO3. J Phys Chem A 2001. [DOI: 10.1021/jp0105950] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Inseon Suh
- Department of Atmospheric Sciences, Texas A&M University, College Station, Texas 77843
| | - Wenfang Lei
- Department of Atmospheric Sciences, Texas A&M University, College Station, Texas 77843
| | - Renyi Zhang
- Department of Atmospheric Sciences, Texas A&M University, College Station, Texas 77843
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Zhang R, Suh I, Lei W, Clinkenbeard AD, North SW. Kinetic studies of OH-initiated reactions of isoprene. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/2000jd900330] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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