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Jiang W, Misovich MV, Hettiyadura APS, Laskin A, McFall AS, Anastasio C, Zhang Q. Photosensitized Reactions of a Phenolic Carbonyl from Wood Combustion in the Aqueous Phase-Chemical Evolution and Light Absorption Properties of AqSOA. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:5199-5211. [PMID: 33733745 DOI: 10.1021/acs.est.0c07581] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Guaiacyl acetone (GA) is a phenolic carbonyl emitted in significant quantities by wood combustion that undergoes rapid aqueous-phase oxidation to produce aqueous secondary organic aerosol (aqSOA). We investigate the photosensitized oxidation of GA by an organic triplet excited state (3C*) and the formation and aging of the resulting aqSOA in wood smoke-influenced fog/cloud water. The chemical transformations of the aqSOA were characterized in situ using a high-resolution time-of-flight aerosol mass spectrometer. Additionally, aqSOA samples collected over different time periods were analyzed using high-performance liquid chromatography coupled with a photodiode array detector and a high-resolution Orbitrap mass spectrometer (HPLC-PDA-HRMS) to provide details on the molecular composition and optical properties of brown carbon (BrC) chromophores. Our results show efficient formation of aqSOA from GA, with an average mass yield around 80%. The composition and BrC properties of the aqSOA changed significantly over the course of reaction. Three generations of aqSOA products were identified via positive matrix factorization analysis of the aerosol mass spectrometry data. Oligomerization and functionalization dominated the production of the first-generation aqSOA, whereas fragmentation and ring-opening reactions controlled the formation of more oxidized second- and third-generation products. Significant formation of BrC was observed in the early stages of the photoreaction, while organic acids were produced throughout the experiment. High-molecular weight molecules (m/z > 180) with high aromaticity were identified via HPLC-PDA-HRMS and were found to account for a majority of the UV-vis absorption of the aqSOA.
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Affiliation(s)
- Wenqing Jiang
- Department of Environmental Toxicology, University of California, Davis, California 95616-5270, United States
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
| | - Maria V Misovich
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-2050, United States
| | - Anusha P S Hettiyadura
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-2050, United States
| | - Alexander Laskin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907-2050, United States
- Department of Earth, Atmospheric and Planetary Sciences, Purdue University, West Lafayette, Indiana 47907-2050, United States
| | - Alexander S McFall
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
- Department of Land, Air, and Water Resources, University of California, Davis, California 95616-5270, United States
| | - Cort Anastasio
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
- Department of Land, Air, and Water Resources, University of California, Davis, California 95616-5270, United States
| | - Qi Zhang
- Department of Environmental Toxicology, University of California, Davis, California 95616-5270, United States
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, California 95616-5270, United States
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Albarrán G, Galicia-Jiménez E, Mendoza E, Schuler RH. Substitution and addition reactions of •OH with p-substituted-phenols. Radiat Phys Chem Oxf Engl 1993 2017. [DOI: 10.1016/j.radphyschem.2016.12.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Study on the role of hydroperoxyl radical in degradation of p-nitrophenol attacked by hydroxyl radical using photolytical technique. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.02.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Carlos L, Nichela D, Triszcz JM, Felice JI, García Einschlag FS. Nitration of nitrobenzene in Fenton's processes. CHEMOSPHERE 2010; 80:340-345. [PMID: 20417542 DOI: 10.1016/j.chemosphere.2010.03.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2009] [Revised: 03/22/2010] [Accepted: 03/23/2010] [Indexed: 05/29/2023]
Abstract
Previous studies of nitrobenzene (NB) degradation by Fenton and photo-Fenton technologies have demonstrated the formation and accumulation of 1,3-dinitrobenzene (1,3-DNB) as a highly toxic reaction intermediate. In the present study, we analyze the conditions that favor 1,3-DNB formation during NB degradation by Fe(2+)/H(2)O(2), Fe(3+)/H(2)O(2), UV/Fe(3+)/H(2)O(2) or UV/H(2)O(2) processes. Nitration yields in Fenton, Fenton-like and photo-Fenton techniques were much higher than those observed in UV/H(2)O(2) systems. Besides, several tests showed that 1,3-DNB formation increases with the initial iron concentration and decreases as the initial H(2)O(2) concentration increases. In order to asses the key species involved in NB nitration mechanism, additional experiments were performed in the presence of NO(2)(-)or NO(3)(-). In dark systems, 1,3-DNB yield significantly increased with increasing [NO(2)(-)]_(0), while it was not affected by the presence of NO(3)(-). In contrast, 1,3-DNB yields were higher and more strongly affected by the additive concentration in UV/NO(3)(-) systems than in UV/HNO(2)/NO(2)(-) systems. Dark experiments performed at pH 1.5 in excess of HNO(2) along with UV/NO(3)(-) tests conducted in the presence of 2-propanol show that hydroxyl radicals play an important role in NB nitration since NB molecule does not react with the nitrating agents ONOOH, .NO or .NO(2). The results indicate that, in the experimental domain tested, the prevailing NB nitration pathway involves the reaction between the .OH-NB adduct and .NO(2) radicals.
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Affiliation(s)
- Luciano Carlos
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, CCT-La Plata-CONICET, Departamento de Química, Facultad de Ciencias Exactas, UNLP, La Plata, Argentina
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Dhiman SB, Naik DB. Nature of the transient species formed in the pulse radiolysis of 4-hydroxybenzyl alcohol in aqueous solutions: observation of equilibrium in the reaction of OH-adducts with HPO42−ions. J PHYS ORG CHEM 2009. [DOI: 10.1002/poc.1583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Maurino V, Minero C, Pelizzetti E, Piccinini P, Serpone N, Hidaka H. The fate of organic nitrogen under photocatalytic conditions: degradation of nitrophenols and aminophenols on irradiated TiO2. J Photochem Photobiol A Chem 1997. [DOI: 10.1016/s1010-6030(97)00124-x] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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