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Woods E, Heylman KD, Gibson AK, Ashwell AP, Rossi SR. Effects of NOy Aging on the Dehydration Dynamics of Model Sea Spray Aerosol. J Phys Chem A 2013; 117:4214-22. [DOI: 10.1021/jp401646d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ephraim Woods
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York
13346, United States
| | - Kevin D. Heylman
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York
13346, United States
| | - Amanda K. Gibson
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York
13346, United States
| | - Adam P. Ashwell
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York
13346, United States
| | - Sean R. Rossi
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York
13346, United States
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Arenas KJL, Schill SR, Malla A, Hudson PK. Deliquescence Phase Transition Measurements by Quartz Crystal Microbalance Frequency Shifts. J Phys Chem A 2012; 116:7658-67. [PMID: 22742475 DOI: 10.1021/jp3016722] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Kathleen Jane L. Arenas
- California State University, Fullerton, 800 N. State
College, Fullerton, California 92834, United States
| | - Steven R. Schill
- California State University, Fullerton, 800 N. State
College, Fullerton, California 92834, United States
| | - Ammaji Malla
- California State University, Fullerton, 800 N. State
College, Fullerton, California 92834, United States
| | - Paula K. Hudson
- California State University, Fullerton, 800 N. State
College, Fullerton, California 92834, United States
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Woods E, Yi C, Gerson JR, Zaman RA. Uptake of Pyrene by NaCl, NaNO3, and MgCl2 Aerosol Particles. J Phys Chem A 2012; 116:4137-43. [DOI: 10.1021/jp3014145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ephraim Woods
- Department of Chemistry, Colgate University, Hamilton, New York 13346, United
States
| | - Colin Yi
- Department of Chemistry, Colgate University, Hamilton, New York 13346, United
States
| | - Jacqueline R. Gerson
- Department of Chemistry, Colgate University, Hamilton, New York 13346, United
States
| | - Rifat A. Zaman
- Department of Chemistry, Colgate University, Hamilton, New York 13346, United
States
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Bruzewicz DA, Checco A, Ocko BM, Lewis ER, McGraw RL, Schwartz SE. Reversible uptake of water on NaCl nanoparticles at relative humidity below deliquescence point observed by noncontact environmental atomic force microscopy. J Chem Phys 2011; 134:044702. [DOI: 10.1063/1.3524195] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Woodill LA, Hinrichs RZ. Heterogeneous reactions of surface-adsorbed catechol with nitrogen dioxide: substrate effects for tropospheric aerosol surrogates. Phys Chem Chem Phys 2010; 12:10766-74. [PMID: 20623042 DOI: 10.1039/c002079f] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Surface-adsorbed organics can alter the chemistry of tropospheric aerosols thereby impacting photochemical cycles and altering aerosol properties. The nature of the surface can also influence the chemistry of the surface-adsorbed organic. We employed diffuse reflectance infrared spectroscopy (DRIFTS) to monitor the adsorption of gaseous catechol on several tropospheric aerosol surrogates and to investigate the subsequent reactivity of adsorbed catechol with nitrogen dioxide. The dark heterogeneous reaction of NO(2) with NaCl-adsorbed catechol produced 4-nitrocatechol, 1,2-benzoquinone, and the ring-cleaved product muconic acid, with product yields of 88%, 8%, and 4% at relative humidity (RH) < 2%, respectively. The reaction was first-order with respect to both catechol and NO(2). The reactive uptake coefficient for NO(2) + NaCl-adsorbed catechol increased from 3 x 10(-6) at <2% RH to 7 x 10(-6) at 30% RH. These reactions were more than two orders of magnitude more reactive than NaCl without adsorbed catechol. The 4-nitrocatechol product yield was enhanced on NaF, while NaBr-adsorbed catechol produced considerably more 1,2-benzoquinone and muconic acid. This substrate effect is discussed in terms of each substrate's ability to polarize the phenol group and hinder hydrogen atom abstraction from intermediate o-semiquinone radicals. These dark heterogeneous reactions may alter the UV-visible absorbing properties of tropospheric aerosols and may also contribute as a dark source of NO(2)(-)/HONO. These results contrast prior observations which found pure catechol thin films unreactive with NO(2), highlighting the need to specifically consider substrate and matrix effects in laboratory systems.
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Affiliation(s)
- Laurie A Woodill
- Department of Chemistry, Drew University, Madison, NJ 07940, USA
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Beaver MR, Freedman MA, Hasenkopf CA, Tolbert MA. Cooling Enhancement of Aerosol Particles Due to Surfactant Precipitation. J Phys Chem A 2010; 114:7070-6. [DOI: 10.1021/jp102437q] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Melinda R. Beaver
- Department of Chemistry and Biochemistry, Cooperative Institute for Research in Environmental Sciences, CIRES, and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado 80309
| | - Miriam A. Freedman
- Department of Chemistry and Biochemistry, Cooperative Institute for Research in Environmental Sciences, CIRES, and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado 80309
| | - Christa A. Hasenkopf
- Department of Chemistry and Biochemistry, Cooperative Institute for Research in Environmental Sciences, CIRES, and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado 80309
| | - Margaret A. Tolbert
- Department of Chemistry and Biochemistry, Cooperative Institute for Research in Environmental Sciences, CIRES, and Department of Atmospheric and Oceanic Sciences, University of Colorado, Boulder, Colorado 80309
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Woods E, Chung D, Lanney HM, Ashwell BA. Surface Morphology and Phase Transitions in Mixed NaCl/MgSO4 Aerosol Particles. J Phys Chem A 2010; 114:2837-44. [DOI: 10.1021/jp911133j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Ephraim Woods
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346
| | - Daniel Chung
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346
| | - Howard M. Lanney
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346
| | - Benjamin A. Ashwell
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346
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Harmon CW, Grimm RL, McIntire TM, Peterson MD, Njegic B, Angel VM, Alshawa A, Underwood JS, Tobias DJ, Gerber RB, Gordon MS, Hemminger JC, Nizkorodov SA. Hygroscopic Growth and Deliquescence of NaCl Nanoparticles Mixed with Surfactant SDS. J Phys Chem B 2010; 114:2435-49. [DOI: 10.1021/jp909661q] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Christopher W. Harmon
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Ronald L. Grimm
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Theresa M. McIntire
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Mark D. Peterson
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Bosiljka Njegic
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Vanessa M. Angel
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Ahmad Alshawa
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Joelle S. Underwood
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Douglas J. Tobias
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - R. Benny Gerber
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Mark S. Gordon
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - John C. Hemminger
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
| | - Sergey A. Nizkorodov
- Department of Chemistry, University of California, Irvine, California 92697-2025; Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel; and Department of Chemistry, Iowa State University, Ames, Iowa 50011-3111
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Alshawa A, Dopfer O, Harmon CW, Nizkorodov SA, Underwood JS. Hygroscopic Growth and Deliquescence of NaCl Nanoparticles Coated with Surfactant AOT. J Phys Chem A 2009; 113:7678-86. [DOI: 10.1021/jp809869r] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ahmad Alshawa
- Department of Chemistry, University of California, Irvine, California 92697-2025, and Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin, Germany
| | - Otto Dopfer
- Department of Chemistry, University of California, Irvine, California 92697-2025, and Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin, Germany
| | - Christopher W. Harmon
- Department of Chemistry, University of California, Irvine, California 92697-2025, and Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin, Germany
| | - Sergey A. Nizkorodov
- Department of Chemistry, University of California, Irvine, California 92697-2025, and Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin, Germany
| | - Joelle S. Underwood
- Department of Chemistry, University of California, Irvine, California 92697-2025, and Institut fuer Optik und Atomare Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin, Germany
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Woods E, Kim HS, Wivagg CN, Dotson SJ, Broekhuizen KE, Frohardt EF. Phase transitions and surface morphology of surfactant-coated aerosol particles. J Phys Chem A 2007; 111:11013-20. [PMID: 17929784 DOI: 10.1021/jp074848m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Probe molecule spectroscopy and hygroscopic growth curves characterize the morphology of surfactant-coated aerosol particles as a function of relative humidity (RH). This study focuses on particles composed of either potassium iodide or sodium chloride and sodium dodecyl sulfate (SDS). At high RH, these mixed particles assume a reverse micelle type structure, and at low RH, they comprise a solid core of either KI or NaCl coated with SDS and water. The deliquescence relative humidity (DRH) and efflorescence relative humidity (ERH) of the inorganic fraction of the mixed particles are very similar to those of the pure salts. The surface polarity and morphology sampled by the coumarin 314 probe molecule ranges from that of a water-organic interface to that of an ionic surface and depends strongly on the RH and the amount of SDS. When the SDS coverage of the droplet just prior to efflorescence reaches approximately one monolayer, a thin soap film persists on the surface to values of RH much lower than the ERH. Both the electronic spectroscopy and photoelectric charging efficiency show a separate efflorescence for this layer at RH < 5%. The spectroscopy further reveals that there is a hysteresis associated with this low RH phase transition for both KI and NaCl cores.
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Affiliation(s)
- Ephraim Woods
- Department of Chemistry, Colgate University, 13 Oak Drive, Hamilton, New York 13346, USA.
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