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  Dept of Chemical Engineering
Carnegie Mellon University
5000 Forbes Avenue
Pittsburgh, PA 15213-3890 USA
Phone: (412) 268 - 2230
Fax: (412) 268 - 7139 		 
 
People
 

Carnegie Mellon 2000-

Postdoctoral Research and Research Scientist, 1991-2000, Harvard University (Chemistry)

PhD. 1991, Massachusetts Institute of Technology (Meteorology)

A.B. 1985, Brown University (Physics)

Neil M. Donahue
Professor of Chemical Engineering, Chemistry, and Engineering and Public Policy


Office: Doherty Hall B204
Phone: (412) 268-4415
Fax: (412) 268-7139
Email: nmd@cmu.edu
Secretary: Shirley Pavlischak
    E-mail: shirleyp@andrew.cmu.edu
    Phone: (412) 268-2251
    Fax: (412) 268-2183

Biography
Research Interests
Highlights
Awards and Honors
Publications
Center for Atmospheric Particle Studies

Biography

Prof. Neil Donahue received a B.A. in Physics from Brown University in 1984 and a PhD in Meteorology and Atmospheric Chemistry from MIT in 1991. His thesis was "Non-methane Hydrocarbon Chemistry in the Remote Marine Atmosphere" and his advisor was Ronald G. Prinn. Prof. Donahue was a Postdoc and Research Scientist at Harvard from 1991 - 2000 with James G. Anderson and thereupon joined Carnegie Mellon University. He is currently Professor of Chemistry and Chemical Engineering and the Director of the Center for Atmospheric Particle Studies.


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Research Interests

Research in Professor Donahue's laboratory focuses on three interrelated topics: the oxidation pathways of reduced compounds throughout the atmosphere, measurement of atmospheric compounds, including free radicals and stable molecules, and the fundamental quantum mechanics and dynamics controlling reactivity and causing variation in reactivity among related chemical systems.


Atmospheric Oxidation Mechanisms
Reduced compounds react in the atmosphere with oxidants including hydroxyl (OH), ozone (O3), and nitrate (NO3). Their oxidation products include oxygenated organics (aldehydes, ketones, organic acids, carbon monoxide, and carbon dioxide), ozone, and organic aerosols. We directly observe the mechanisms connecting these reactants and products by initiating the oxidation in a flow-tube and observing the reaction downstream. The time scale of these experiments allows us to observe mechanisms step-by-step while permitting us to study interactions typical of the real atmosphere. In parallel, we follow this chemistry in the CMU smog chamber over longer timescales (minutes to hours), where we can observe and constrain secondary aerosol formation as well as the chemical processing of condensed-phase organics by gas-phase oxidants. The broad objective is to understand how oxidation mechanisms and their products, including ozone and aerosols, change with changing atmospheric composition..

Fundamental Reactivity
Chemical reactivity can evolve dramatically among a series of related reactions. Reactivity can differ by a factor of a million or more, and similar reactions can have qualitatively different reaction products. This has profound consequences for atmospheric chemistry, combustion, and all other systems involving complex mechanisms. It also indicates that observation without fundamental understanding is dangerous. A major objective of our work is to understand the fundamental quantum mechanics and reaction dynamics describing this evolution.

Ambient Measurement
In our lab we employ multiple methods, including spectroscopy, mass-spectrometry, and gas chromatography to measure both the short-lived intermediates involved in atmospheric oxidation chemistry as well as the longer-lived precursors and products of that chemistry. The objective is to test with in-situ observation the oxidation mechanisms developed in our laboratory studies.


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Highlights

  • Completed sabbatical leave in June 2009, supported by a grant from the European Union EUROCHAMP chamber network. While at the Paul Scherrer Institute, Switzerland, Karlsruhe Institute of Technology, Germany, and Forschunszentrum Juelich, Germany, I coordinated a multiple chamber organic aerosol aging experiment that will lead to a large number of publications in 2010 - 2011. Also served as a visiting professor at the University of Utrecht during Spring 2009.

  • Major collaborator and co-author on a paper published in Science in Dec 2009 discussing organic aerosol observations around the globe. Neil’s contribution was to develop a theoretical framework describing those data.

  • PI for a successful $700k MRI grant ($210k from the Wallace Research Foundation, $490k from NSF) to obtain 2 mass spectrometers for the CAPS Air-Quality and Mobile laboratories.

  • Served as associate editor for the Journal of Geophysical Research, Atmospheres.

  • Appointed to the editorial board for Atmospheric Chemistry and Physics.

  • Served on the board of directors of the American Association for Aerosol Research.


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Awards and Honors

  • NASA Graduate Student Research Fellowship (1985-1988)

  • DOE Global Change Distinguished Postdoctoral Fellow (1991-1993)

  • Carnegie Institute of Technology 2009 Outstanding Research Award


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Publications

       Recent Publications

       Representative Publications

       Full Publications


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Recent Publications

Origin, composition and volatility of aged aerosol in the eastern Mediterranean: The Finokalia aerosol measurement experiment - 2008. Atmos. Chem. Phys. Discus. 10, 1847–1900 (2010).( L. Hildebrandt, G. J. Englehardt, C. Mohr, E. Kostenidou, A. Bougiatioti, U. Baltensperger, N. Mihalopoulos, N. M. Donahue, and S. N. Pandis)

Updating our conceptual model for fine particle mass emissions from combustion systems J. Am.Waste Manage. Assoc. 60 1204-1222(A. L. Robinson, A. P. Grieshop, N. M. Donahue, and S. W.) 2010.

Organic aerosol components observed in worldwide datasets from aerosol mass spectrometry. Atmos. Chem. Phys. Discuss. 9, 27745—27789 (N. L. Ng, M. R. Canagaratna, Q. Zhang, J. L. Jimenez, J. Tian, I. M. Ulbrich, J. H. Kroll, K. S. Docherty, P. S. Chhabra, R. Bahreini, S. M. Murphy, J. H. Seinfeld, L. Hildebrandt, N. M. Donahue, P. F. DeCarlo, V. A. Lanz, A. S. H. Prevot, E. Dinar, Y. Rudich, and D. R. Worsnop) 2009.

Aerosol analysis using a proton-transfer-reaction thermo-desorption mass spectrometer PTR-TD-MS: A new approach to study processing of organic aerosols. Atmos. Chem. Phys. 9, 25983–26012 (R. Holzinger, J. Williams, F. Hermann, J. Lelieveld, N. M. Donahue, and T. R¨ockmann) 2010.

Secondary organic aerosol formation from high-NOx photo-oxidation of low-volatility precursors: nalkanes. Environ. Sci. Technol. 44, 2029-2034 (A. A. Presto, M. A. Miracolo, N. M. Donahue, and A. L. Robinson) 2010.

Photo-oxidation of low-volatility organics found in motor vehicle emissions: production and chemical volution of organic aerosol mass. Environ. Sci. Technol. 44 (M. A. Miracolo, A. A. Presto, A. T. Lambe, C. J. Hennigan, N. M. Donahue, J. H. Kroll, 1638-1643 (D. R. Worsnop, and A. L. Robinson) 2010.

The HOOH UV spectrum: Importance of the transition dipole moment and torsional motion from semiclassical calculations on an ab-initio PES. J. Chem. Phys. 132, 084304 (G. T. Drozd, A. Melnichuk, and N. M. Donahue) 2010.

Equilibration time scales of organic aerosol inside thermodenuders: Evaporation kinetics versus thermodynamics. Atmos. Environ. 44 597-607 (I. Riipinen, J. R. Pierce, N. M. Donahue, and S. N. Pandis) 2010.

Organic aerosol formation in citronella candle plumes. Air Quality, Atmosphere and Health 3, 131-137 (M. Bothe and N. M. Donahue) 2010.

A semi-empirical correlation between enthalpy of vaporization and saturation concentration for organic aerosol. Environ. Sci. Technol. 44 743-748 (S. A. Epstein, I. Riipinen, and N. M. Donahue) 2010.

Humidity effects on organic aerosol partitioning following the _-pinene + ozone reaction. Geophys.Res. Lett. 37, L01802 (N. Prisle, G. J. Engelhart, M. Bilde, and N. M. Donahue) 2010.

Organic aerosol speciation: Intercomparison of thermal desorption aerosol GC/MS (TAG) and filterbased techniques. Aerosol Sci. Technol. 44, 141–151 (A. T. Lambe, H. J. Chacon-Madrid, N. T. Nguyen, E. A. Weitkamp, N. M. Kreisberg, S. V. Hering, A. H. Goldstein, N. M. Donahue, and A. L. Robinson) 2010.

Evolution of organic aerosols in the atmosphere: A new framework connecting measurements to models. Science 326, 1525–1529 (J. L. Jimenez, M. R. Canagaratna, N. M. Donahue, A. S. H. Pr΄evˆot, 3 Q. Zhang, J. H. Kroll, P. F. DeCarlo, J. Allan, H. Coe, N. L. Ng, A. C. Aiken, K. D. Docherty, I. M. Ulbrich, A. P. Grieshop, A. L. Robinson, J. Duplissy, J. D. Smith, K. R. Wilson, V. A. Lanz, C. Hueglin, Y. L. Sun, A. Laaksonen, T. Raatikainen, J. Rautiainen, P. Vaattovaara, M. Ehn, M. Kulmala, J. M. Tomlinson, D. R. Collins, M. J. Cubison, E. J. Dunlea, J. A. Huffman, T. B. Onasch, M. R. Alfarra, P. I. Williams, K. Bower, Y. Kondo, J. Schneider, F. Drewnick, S. Borrmann, S. Weimer, K. Demerjian, D. Salcedo, L. Cottrell, R. Griffin, A. Takami, T. Miyoshi, S. Hatakeyama, A. Shimono, J. Y. Sun, Y. M. Zhang, K. Dzepina, J. R. Kimmel, D. Sueper, J. T. Jayne, S. C. Herndon, A. M. Trimborn, L. R. Williams, E. C. Wood, C. E. Kolb, U. Baltensperger, and D. R. Worsnop) 2009 (2).

Effective rate constants and uptake coefficients for the reactions of organic molecular markers (nalkanes, hopanes and steranes) in motor oil and diesel primary organic aerosols with OH radicals. Environ. Sci. Technol. 43, 8794–8800 (A. T. Lambe, M. A. Miracolo, C. J. Hennigan, A. L. Robinson, and N. M. Donahue) 2009.

High time resolved measurements of organic air toxics in multiple exposure regimes. Atmos. Environ. 43, 6205–6217 (J. L. Logue, K. E. Huff Hartz, A. T. Lambe, N. M. Donahue, and A. L. Robinson) 2009.

Mixing and phase partitioning of primary and secondary organic aerosols. Geophys. Res. Lett. 36, L15827 (A. Asa-Awuku, M. A. Miracolo, J. H. Kroll, A. L. Robinson, and N. M. Donahue) 2009 (1).

The formation, properties and impact of secondary organic aerosol: current and emerging issues. Atmos. Chem. Phys. 10, 5155–5236 (M. Hallquist, J. C. Wenger, U. Baltensperger, Y. Rudich, D. Simpson, M. Claeys, J. Dommen, N. M. Donahue, C. George, A. H. Goldstein, J. F. Hamilton, H. Herrmann, T. Hoffmann, Y. Iinuma, M. Jang, M. E. Jenkin, J. L. Jimenez, A. Kiendler-Scharr, W. Maenhaut, G. McFiggans, T. F. Mentel, A. Monod, A. S. H. Pr΄evˆot, J. H. Seinfeld, J. D. Surratt, R. Szmigielski, and J. Wildt) 2009 (26).

High formation of secondary organic aerosol from the photo-oxidation of toluene. Atmos. Chem. Phys. 9, 2973–2986 (L. Hildebrandt, N. M. Donahue, and S. N. Pandis) 2009 (1). [19] Tracking organic aerosol reactivity using compound-specific uptake coefficients: Changes in oleic acid reactivity with aerosol age. Phys. Chem. Chem. Phys. 11, 7951–7962 (A. M. Sage, A. L. Robinson, and N. M. Donahue) 2009.

Apportioning black carbon to sources using highly time-resolved ambient measurements of organic molecular markers in Pittsburgh. Atmos. Environ. 43, 3941–3950 (A. T. Lambe, J. M. Logue, N. M. Kreisberg, S. V. Hering, D. R. Worton, A. H. Goldstein, N. M. Donahue, and A. L. Robinson) 2009 (3).

Secondary organic aerosol formation from multiphase oxidation of limonene by ozone: Mechanistic constraints via two-dimensional heteronuclear NMR spectroscopy. Phys. Chem. Chem. Phys. 11, 7810–7818 (C. S. Maksymiuk, C. Gayathri, R. R. Gil, and N. M. Donahue) 2009.

Laboratory investigation of photochemical oxidation of organic aerosol from wood fires 2: interpretation of Aerosol Mass Spectrometer data. Atmos. Chem. Phys. 8, 2227–2240 (A. P. Grieshop, N. M. Donahue, and A. L. Robinson) 2009 (8).

Constraining the volatility distribution and gas-particle partitioning of combustion aerosols using isothermal dilution and thermodenuder measurements. Environ. Sci. Technol. 43, 4750–4756 (A. P. Grieshop, M. A. Miracolo, N. M. Donahue, and A. L. Robinson) 2009 (3).

Intermediate-volatility organic compounds: A potential source of ambient oxidized organic aerosol. Environ. Sci. Technol. 43, 4744–4749 (A. A. Presto, M. A. Miracolo, N. M. Donahue, A. L. Robinson, J. H. Kroll, and D. R. Worsnop) 2009 (3).

Rate constants of nine C6-C9 alkanes with OH from 230-379 K: Chemical tracers for [OH]. J. Phys. Chem. A 113, 5030–5038 (M. M. Sprengnether, K. L. Demerjian, T. J. Dransfield, J. S. Clarke, N. M. Donahue, and J. G. Anderson) 2009.

Laboratory investigation of photochemical oxidation of organic aerosol from wood fires 1: measurement and simulation of organic aerosol evolution. Atmos. Chem. Phys. 8, 1263–1277 (A. P. Grieshop, J. M. Logue, N. M. Donahue, and A. L. Robinson) 2009 (12).

Atmospheric organic particulate matter: From smoke to secondary organic aerosol. Atmos. Environ. 43, 94–106 (N. M. Donahue, A. L. Robinson, and S. N. Pandis) 2009 (12).


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Representative Publications

N. M. Donahue, "Reaction Barriers: Origin and Evolution", Chem. Rev ., 103 , p. 4593, 2003.

J. Zhang, T. J. Dransfield and N. M. Donahue, "On the Mechanism for Nitrate Formation in the Atmosphere: Peroxynitrates as a Crucial Intermediate", J. Phys. Chem. A ., 108 , p. 9082, 2004.

D. B. Millet, N. M. Donahue, S. N. Pandis, A. Polidori, C. O. Stanier, B. J. Turpin and A. H. Goldstein, "Partitioning VOCs and Organic Aerosols into Primary and Secondary Sources: Results from the Pittsburgh Air Quality Study", J. Geophys. Res ., 110 , D07S07, doi:10.1029/2004JD004601, 2005.

N. M. Donahue, K. E. Huff Hartz, B. Chuong, A. Presto, C. O. Stanier and S. N. Pandis, "Critical Factors Determining the Variation in SOA Yields from Terpene Ozonolysis: A Combined Experimental and Computational Study", Faraday Discussions , 2005.


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Full Publications

  1. Relationship between peroxyacetyl nitrate (PAN) and nitrogen oxides in the clean troposphere. Nature 318, 347–349 (H. L. Singh, B. Ridley, J. Shetter, N. M. Donahue, F. Fehsenfeld, D. Fahey, D. Parish, E. Williams, S. Liu, G. Hebler, and P. Murphy) 1985 (76).

  2. Nonmethane hydrocarbon chemistry in the remote marine boundary layer. J. Geophys. Res. 95, 18387–18411 (N. M. Donahue and R. G. Prinn) 1990 (68).

  3. In situ nonmethane hydrocarbon measurements on SAGA 3. J. Geophys. Res. 98, 16915–16932 (N. M. Donahue and R. G. Prinn) 1993 (56).

  4. Ozone observations and a model of marine boundary layer photochemistry during SAGA 3. J. Geophys. Res. 98, 16955–16968 (A. M. Thompson, J. E. Johnson, A. L. Torres, T. S. Bates, K. C. Kelly, E. Atlas, J. P. Greenberg, N. M. Donahue, S. A. Yvon, E. S. Saltzman, B. G. Heikes, B. W. Mosher, A. A. Shashkov, and V. I. Yegorov) 1993 (95).

  5. Free radical kinetics at high pressure: A mathematical analysis of the flow reactor. J. Phys. Chem. 100, 5821–5838 (N. M. Donahue, J. S. Clarke, K. L. Demerjian, and J. G. Anderson) 1996 (38).

  6. Reaction modulation spectroscopy: A new approach to quantifying reaction mechanisms. J. Phys. Chem. 100, 17855–17861 (N. M. Donahue, K. L. Demerjian, and J. G. Anderson) 1996 (12).

  7. Isotope specific kinetics of hydroxyl radical (OH) with water (H2O): Testing models of reactivity and atmospheric fractionation. J. Phys. Chem. A 101, 1494–1500 (M. K. Dubey, R. Mohrschladt, N. M. Donahue, and J. G. Anderson) 1997 (49).

  8. High pressure flow study of the reactions OH + NOx ! HONOx: Errors in the falloff region. J. Geophys. Res. 102, 6159–6168 (N. M. Donahue, M. K. Dubey, R. Mohrschladt, K. L. Demerjian, and J. G. Anderson) 1997 (72).

  9. Comment on: “The measurement of tropospheric OH radicals by laser-induced fluorescence spectroscopy during the POPCORN field campaign,” by Hofzumahaus et al., and “Intercomparison of tropospheric OH radical measurements by multiple folded long path laser absorption and laser induced fluorescence,” by Brauers et al. Geophys. Res. Lett. 24, 3039–3038 (E. J. Lanzendorf, T. R. Hanisco, N. M. Donahue, and P. O. Wennberg) 1997 (22).

  10. Direct observation of OH production from the ozonolysis of olefins. Geophys. Res. Lett. 25, 59–62 (N. M. Donahue, J. H. Kroll, J. G. Anderson, and K. L. Demerjian) 1998 (83).

  11. New rate constants for ten OH alkane reactions from 300 to 400 K: An assessment of accuracy. J. Phys. Chem. A 102, 3121–3126 (N. M. Donahue, K. L. Demerjian, and J. G. Anderson) 1998 (44).

  12. Predicting radical-molecule barrier heights: The role of the ionic surface. J. Phys. Chem. A 102, 3923–3933 (N. M. Donahue, J. S. Clarke, and J. G. Anderson) 1998 (51).

  13. Testing frontier orbital control: OH + ethane, propane, and cyclopropane from 180 K to 360 K. J. Phys. Chem. A 102, 9847–9857 (J. S. Clarke, J. H. Kroll, N. M. Donahue, and J. G. Anderson) 1998 (44).

  14. Temperature and pressure dependent kinetics of the gas-phase reaction of the hydroxyl radical with nitrogen dioxide. Geophys. Res. Lett. 26, 687–690 (T. J. Dransfield, K. K. Perkins, N. M. Donahue, J. G. Anderson, M. M. Sprengenther, and K. L. Demerjian) 1999 (53).

  15. Fourier transform ultraviolet spectroscopy of the A2 3/2 X2 3/2 transition of BrO. J. Phys. Chem. A 103, 8935–8945 (D. M. Wilmouth, T. F. Hanisco, N. M. Donahue, and J. G. Anderson) 1999 (46).

  16. Multiple excited states in a two-state crossing model: Predicting barrier height evolution for H + alkene addition reactions. J. Phys. Chem. A 104, 4458 – 4468 (J. S. Clarke, H. A. Rypkema, J. H. Kroll, N. M. Donahue, and J. G. Anderson) 2000 (15).

  17. An experimental method for testing reactivity models: A high-pressure discharge-flow study of H + alkene and haloalkene reactions. J. Phys. Chem. A 104, 5254 – 5264 (J. S. Clarke, J. H. Kroll, H. A. Rypkema, N. M. Donahue, and J. G. Anderson) 2000 (7).

  18. Mechanism of HOx formation in the gas-phase ozone-alkene reaction: 1. Direct, pressure-dependent measurements of OH yields. J. Phys. Chem. A 105, 1554–1560 (J. H. Kroll, J. S. Clarke, N. M. Donahue, J. G. Anderson, and K. L. Demerjian) 2001 (53).

  19. Constraining the mechanism of OH + NO2 using isotopically labeled reactants: Experimental evidence for HOONO formation. J. Phys. Chem. A 105, 1515–1520 (N. M. Donahue, M. K. Dubey, R. Mohrschladt, T. J. Dransfield, and J. G. Anderson) 2001 (38).

  20. High pressure flow reactor product study of the reactions of HOx + NO2: The role of vibrationally excited intermediates. J. Phys. Chem. A 105, 1507–1514 (T. J. Dransfield, N. M. Donahue, and J. G. Anderson) 2001 (24).

  21. Near-field influence on barrier evolution in symmetric atom transfer reactions: A new model for twostate mixing. J. Phys. Chem. A 105, 1498–1506 (H. A. Rypkema, N. M. Donahue, and J. G. Anderson) 2001 (6).

  22. Revisiting the Hammond postulate: The role of reactant and product ionic states in regulating barrier heights, locations, and frequencies. J. Phys. Chem. A 105, 1489–1497 (N. M. Donahue) 2001 (25).

  23. Mechanism of HOx formation in the gas-phase ozone-alkene reaction: 2. Prompt versus thermal dissociation of carbonyl oxides to form OH. J. Phys. Chem. A 105, 4446–4457 (J. H. Kroll, S. Shahai, J. Anderson, K. L. Demerjian, and N. Donahue) 2001 (54).

  24. Accurate, direct measurements of OH yields from gas-phase ozone-alkene reactions using the Harvard HOx instrument. Geophys. Res. Lett. 28, 3863–3866 (J. H. Kroll, T. F. Hanisco, N. M. Donahue, J. G. Anderson, and K. L. Demerjian) 2001 (13).

  25. Pressure broadening coefficients of rotational transitions of water in the 380-600 cm-1 range. J. Spect. Quant. Rad. Trans. 72, 775–782 (D. W. Steyert, W. F. Wang, D. C. Reuter, M. Sirota, and N. M. Donahue) 2002 (9).

  26. Gas-phase ozonolysis of alkenes: formation of OH from anti carbonyl oxides. J. Am. Chem. Soc. 124, 8518–8519 (J. H. Kroll, V. J. Cee, N. M. Donahue, K. L. Demerjian, and J. G. Anderson) 2002 (21).

  27. Product analysis of the OH oxidation of isoprene and 1,3-butadiene in the presence of NO. J. Geophys. Res. A 107, 4268 (M. Sprengnether, K. L. Demerjian, N. M. Donahue, and J. G. Anderson) 2002 (4).

  28. Reaction barriers: Origin and evolution. Chem. Rev. 103, 4593–4604 (N. M. Donahue) 2003 (15).

  29. Hydrogen and helium pressure broadening of water transitions in the 380-600 cm-1 region. J. Spect. Quant. Rad. Trans. 83, 183–191 (D. W. Steyert, W. F. Wang, J. M. Sirota, N. M. Donahue, and D. C. Reuter) 2004 (2).

  30. Biegler, L.T., “Advances in Computer-Aided Design,” Analytica Chimica Acta 210, 1, p. 97 (1988).

  31. Fitting multiple datasets in kinetics: n-butane + OH!products. Int. J. Chem. Kin. 36, 259–272 (N. M. Donahue and J. S. Clarke) 2004 (3).

  32. Cycloalkene ozonolysis: Collisionally mediated mechanistic branching. J. Am. Chem. Soc. 126, 12363–12373 (B. Chuong, J. Zhang, and N. M. Donahue) 2004 (11).

  33. Ozonolysis fragment quenching by nitrate formation: The pressure dependence of prompt OH radical formation. J. Phys. Chem. A 108, 9096–9104 (A. A. Presto and N. M. Donahue) 2004 (9).

  34. On the mechanism for nitrate formation via the peroxy radical + NO reaction. J. Phys. Chem. A 108, 9082–9095 (J. Zhang, T. Dransfield, and N. M. Donahue) 2004 (25).

  35. Atmospheric volatile organic compound measurements during the Pittsburgh Air Quality Study: Results, interpretation, and quantification of primary and secondary contributions. J. Geophys. Res. 110, D07S07 (D. B. Millet, N. M. Donahue, S. N. Pandis, A. Polidori, C. O. Stanier, B. J. Turpin, and A. H. Goldstein) 2005 (24).

  36. Cloud condensation nuclei activation of monoterpene and sesquiterpene secondary organic aerosol. J. Geophys. Res. 110, D14208 (K. E. Huff Hartz, T. Rosenψrn, S. R. Ferchak, T. M. Raymond, M. Bilde, N. M. Donahue, and S. N. Pandis) 2005 (15).

  37. Competitive oxidation in atmospheric aerosols: The case for relative kinetics. Geophys. Res. Lett. 32, L16805 (N. M. Donahue, A. L. Robinson, K. E. Huff Hartz, A. M. Sage, and E. Weitkamp) 2005 (6).

  38. Critical factors determining the variation in SOA yields from terpene ozonolysis: A combined experimental and computational study. Faraday Disc. 130, 295–309 (N. M. Donahue, K. E. Huff Hartz, B. Chuong, A. A. Presto, C. O. Stanier, T. Rosenψrn, A. L. Robinson, and S. N. Pandis) 2005 (22).

  39. Secondary organic aerosol production from terpene ozonolysis: 1. Effect of UV radiation. Environ. Sci. Technol. 39, 7036–7045 (A. A. Presto, K. E. Huff Hartz, and N. M. Donahue) 2005 (32).

  40. Secondary organic aerosol production from terpene ozonolysis: 2. Effect of NOx concentration. Environ. Sci. Technol. 39, 7046–7054 (A. A. Presto, K. E. Huff Hartz, and N. M. Donahue) 2005 (43).

  41. Deconstructing experimental rate constant measurements: Obtaining intrinsic reaction parameters, kinetic isotope effects, and tunneling coefficients from kinetic data for OH + methane, ethane and cyclohexane. J. Photochem. Photobio. 176, 238–249 (A. M. Sage and N. M. Donahue) 2005.

  42. Cloud condensation nuclei activation of limited solubility organic aerosol. Atmos. Environ. 40, 605–617 (K. E. Huff Hartz, J. E. Tischuk, M. N. Chan, C. K. Chan, N. M. Donahue, and S. N. Pandis) 2006 (18).

  43. Photochemical oxidation and changes in molecular composition of organic aerosol in the regional context. J. Geophys. Res. 111, D03302 (A. L. Robinson, N. M. Donahue, and W. F. Rogge) 2006 (4).

  44. Coupled partitioning, dilution, and chemical aging of semivolatile organics. Environ. Sci. Technol. 40, 2635 – 2643 (N. M. Donahue, A. L. Robinson, C. O. Stanier, and S. N. Pandis) 2006 (33).

  45. The temperature-dependence of rapid low temperature reactions: Experiment, understanding and prediction. Faraday Disc. 133, 137–156 (I. W. M. Smith, A. M. Sage, N. M. Donahue, E. Herbst, and I. H. Park) 2006 (13).

  46. Investigation of -pinene + ozone secondary organic aerosol formation at low total aerosol mass. Environ. Sci. Technol. 40, 3536–3543 (A. A. Presto and N. M. Donahue) 2006 (26).

  47. Constraining the mechanism and kinetics of OH + NO2 and HO2 + NO using the multiple-well master equation. J. Phys. Chem. A 110, 6898–6911 (J. Zhang and N. M. Donahue) 2006 (6).

  48. Secondary organic aerosol formation from limonene ozonolysis: Homogeneous and heterogeneous influences as a function of NOx. J. Phys. Chem. A 110, 11053–11063 (J. Zhang, K. E. Huff Hartz, S. N. Pandis, and N. M. Donahue) 2006 (18).

  49. Contribution of motor vehicle emissions to organic carbon and fine particle mass in Pittsburgh, Pennsylvania: Effects of varying source profiles and seasonal trends in ambient marker concentrations. Atmos. Environ. 40, 8002–8019 (R. Subramanian, N. M. Donahue, A. Bernardo-Bricker, W. F. Rogge, and A. L. Robinson) 2006 (16).

  50. Source apportionment of molecular markers and organic aerosol – 1. Polycyclic aromatic hydrocarbons and methodology for data visualization. Environ. Sci. Technol. 40, 7803–7810 (A. L. Robinson, R. Subramanian, N. M. Donahue, A. Bernardo-Bricker, and W. F. Rogge) 2006 (17).

  51. Source apportionment of molecular markers and organic aerosol – 2. Biomass smoke. Environ. Sci. Technol. 40, 7811–7819 (A. L. Robinson, R. Subramanian, N. M. Donahue, A. Bernardo-Bricker, and W. F. Rogge) 2006 (18).

  52. Source apportionment of molecular markers and organic aerosol – 3. Food cooking emissions. Environ. Sci. Technol. 40, 7820–7827 (A. L. Robinson, R. Subramanian, N. M. Donahue, A. Bernardo-Bricker, and W. F. Rogge) 2006 (22).

  53. Aging of organic aerosol: bridging the gap between laboratory and field studies. Ann. Rev. Phys. Chem. 58, 321–352 (Y. Rudich, N. M. Donahue, and T. F. Mentel) 2007 (30).

  54. Laboratory measurements of the oxidation kinetics of organic aerosol mixtures using a relative rate constants approach. J. Geophys. Res. 112, D04204 (K. E. Huff Hartz, E. A. Weitkamp, A. M. Sage, N. M. Donahue, and A. L. Robinson) 2007 (2).

  55. Ozonolysis of -pinene at atmospherically relevant concentrations: Temperature dependence of aerosol mass fractions (yields). J. Geophys. Res. 112, D03201 (R. K. Pathak, C. O. Stanier, N. M. Donahue, and S. N. Pandis) 2007 (17).

  56. Controlled OH radical production via ozone-alkene reactions for use in aerosol aging studies. Environ. Sci. Technol. 41, 2357–2363 (A. T. Lambe, J. Zhang, A. M. Sage, and N. M. Donahue) 2007 (9).

  57. Rethinking organic aerosols: Semivolatile emissions and photochemical aging. Science 315, 1259–1263 (A. L. Robinson, N. M. Donahue, M. K. Shrivastava, A. M. Sage, E. A.Weitkamp, A. P. Greishop, T. E. Lane, J. R. Pierce, and S. N. Pandis) 2007 (65).

  58. Secondary organic aerosol from limonaketone: Insights into terpene ozonlysis via synthesis of key intermediates. Phys. Chem. Chem. Phys. 9, 2991–2998 (N. M. Donahue, J. E. Tischuk, B. Marquis, and K. E. Huff Hartz) 2007 (4).

  59. Is the gas-particle partitioning in -pinene secondary organic aerosol reversible? Geophys. Res. Lett. 34, L14810 (A. Grieshop, N. M. Donahue, and A. L. Robinson) 2007 (7).

  60. Insights into the primary-secondary and regional-local contributions to organic aerosol in Pittsburgh, Pennsylvania. Atmos. Environ. 41, 7414–7433 (R. Subramanian, N. M. Donahue, A. Bernardo-Bricker, W. F. Rogge, and A. L. Robinson) 2007 (5).

  61. Ozonolysis of -pinene: Parameterization of secondary organic aerosol mass fraction. Atmos. Chem. Phys. 7, 3811–3821 (R. K. Pathak, A. A. Presto, T. E. Lane, C. O. Stanier, N. M. Donahue, and S. N. Pandis) 2007 (6).

  62. Organic aerosol formation from photochemical oxidation of diesel exhaust in a smog chamber. Environ. Sci. Technol. 41, 6969–6975 (E. Weitkamp, A. M. Sage, J. R. Pierce, N. M. Donahue, and A. L. Robinson) 2007 (8).

  63. Evolving mass spectra of the oxidized component of organic aerosol: Results from Aerosol Mass Spectrometer analyses of aged diesel emissions. Atmos. Chem. Phys. 8, 1139–1152 (A. M. Sage, E. A. Weitkamp, A. L. Robinson, and N. M. Donahue) 2008 (2).

  64. Parameterization of secondary organic aerosol mass fractions from smog chamber data. Atmos. Environ. 42, 2276–2299 (C. O. Stanier, N. M. Donahue, and S. N. Pandis) 2008 (3).

  65. Ozonolysis of -pinene: Temperature dependence of secondary organic aerosol mass fraction. Environ. Sci. Technol. 42, 5081–5086 (R. K. Pathak, K. E. Huff Hartz, N. M. Donahue, and S. N. Pandis) 2008.

  66. Laboratory measurements of the oxidation of condensed-phase organic molecular makers for meat cooking emissions. Environ. Sci. Technol. 42, 5177–5182 (E. A. Weitkamp, K. E. Huff Hartz, A. M.Sage, N. M. Donahue, and A. L. Robinson) 2008.

  67. Effect of NOx on secondary organic aerosol concentrations. Environ. Sci. Technol. 42, 6022–6027 (T. E. Lane, N. M. Donahue, and S. N. Pandis) 2008.

  68. Evaluating the effects of gas-particle partitioning and aging of primary organic emissions using the chemical transport model PMCAMx. J. Geophys. Res. A 113, D18301 (M. K. Shrivastava, T. E. Lane, N. M. Donahue, S. N. Pandis, and A. L. Robinson) 2008 (1).

  69. Constraining particle evolution from wall losses, coagulation, and condensation-evaporation in smogchamber experiments: optimal estimation based on size distribution measurements. Aerosol Sci. Technol. 42, 1001–1015 (J. R. Pierce, G. J. Engelhart, E. A. Weitkamp, R. K. Pathak, S. N. Pandis, N. M. Donahue, A. L. Robinson, and P. J. Adams) 2008.

  70. Laboratory measurements of the heterogeneous oxidation of condensed-phase organic molecular makers for motor vehicle exhaust. Environ. Sci. Technol. 42, 7950–7956 (E. A. Weitkamp, A. T. Lambe, N. M. Donahue, and A. L. Robinson) 2008 (1).

  71. Simulating secondary organic aerosol formation using the volatility basis-set approach in a chemical transport model. Atmos. Environ. 42, 7439–7451 (T. E. Lane, N. M. Donahue, and S. N. Pandis) 2008 (1).

  72. The kinetics of tetramethylethene ozonolysis: Decomposition of the primary ozonide and subsequent product formation in the condensed phase. J. Phys. Chem. A 112, 13535–13541 (S. A. Epstein and N. M. Donahue) 2008.

  73. Evolution of organic aerosols in the atmosphere: A new framework connecting measurements to models. Science 326, 1525–1529 (J. L. Jimenez, M. R. Canagaratna, N. M. Donahue, A. S. H. Pr΄evˆot, Q. Zhang, J. H. Kroll, P. F. DeCarlo, J. Allan, H. Coe, N. L. Ng, A. C. Aiken, K. D. Docherty, I. M. Ulbrich, A. P. Grieshop, A. L. Robinson, J. Duplissy, J. D. Smith, K. R. Wilson, V. A. Lanz, C. Hueglin, Y. L. Sun, A. Laaksonen, T. Raatikainen, J. Rautiainen, P. Vaattovaara, M. Ehn, M. Kulmala, J. M. Tomlinson, D. R. Collins, M. J. Cubison, E. J. Dunlea, J. A. Huffman, T. B. Onasch, M. R. Alfarra, P. I. Williams, K. Bower, Y. Kondo, J. Schneider, F. Drewnick, S. Borrmann, S. Weimer, K. Demerjian, D. Salcedo, L. Cottrell, R. Griffin, A. Takami, T. Miyoshi, S. Hatakeyama, A. Shimono, J. Y. Sun, Y. M. Zhang, K. Dzepina, J. R. Kimmel, D. Sueper, J. T. Jayne, S. C. Herndon, A. M. Trimborn, L. R. Williams, E. C. Wood, C. E. Kolb, U. Baltensperger, and D. R. Worsnop) 2009 (2).

  74. Effective rate constants and uptake coefficients for the reactions of organic molecular markers (nalkanes, hopanes and steranes) in motor oil and diesel primary organic aerosols with OH radicals. Environ. Sci. Technol. 43, 8794–8800 (A. T. Lambe, M. A. Miracolo, C. J. Hennigan, A. L. Robinson, and N. M. Donahue) 2009.

  75. High time resolved measurements of organic air toxics in multiple exposure regimes. Atmos. Environ. 43, 6205–6217 (J. L. Logue, K. E. Huff Hartz, A. T. Lambe, N. M. Donahue, and A. L. Robinson) 2009.

  76. Mixing and phase partitioning of primary and secondary organic aerosols. Geophys. Res. Lett. 36, L15827 (A. Asa-Awuku, M. A. Miracolo, J. H. Kroll, A. L. Robinson, and N. M. Donahue) 2009 (1).

  77. The formation, properties and impact of secondary organic aerosol: current and emerging issues. Atmos. Chem. Phys. 10, 5155–5236 (M. Hallquist, J. C. Wenger, U. Baltensperger, Y. Rudich, D. Simpson, M. Claeys, J. Dommen, N. M. Donahue, C. George, A. H. Goldstein, J. F. Hamilton, H. Herrmann, T. Hoffmann, Y. Iinuma, M. Jang, M. E. Jenkin, J. L. Jimenez, A. Kiendler-Scharr, W. Maenhaut, G. McFiggans, T. F. Mentel, A. Monod, A. S. H. Pr΄evˆot, J. H. Seinfeld, J. D. Surratt, R. Szmigielski, and J. Wildt) 2009 (26).

  78. High formation of secondary organic aerosol from the photo-oxidation of toluene. Atmos. Chem. Phys. 9, 2973–2986 (L. Hildebrandt, N. M. Donahue, and S. N. Pandis) 2009 (1).

  79. Tracking organic aerosol reactivity using compound-specific uptake coefficients: Changes in oleic acid reactivity with aerosol age. Phys. Chem. Chem. Phys. 11, 7951–7962 (A. M. Sage, A. L. Robinson, and N. M. Donahue) 2009.

  80. Apportioning black carbon to sources using highly time-resolved ambient measurements of organic molecular markers in Pittsburgh. Atmos. Environ. 43, 3941–3950 (A. T. Lambe, J. M. Logue, N. M. Kreisberg, S. V. Hering, D. R. Worton, A. H. Goldstein, N. M. Donahue, and A. L. Robinson) 2009 (3).

  81. Secondary organic aerosol formation from multiphase oxidation of limonene by ozone: Mechanistic constraints via two-dimensional heteronuclear NMR spectroscopy. Phys. Chem. Chem. Phys. 11, 7810–7818 (C. S. Maksymiuk, C. Gayathri, R. R. Gil, and N. M. Donahue) 2009.

  82. Laboratory investigation of photochemical oxidation of organic aerosol from wood fires 2: interpretation of Aerosol Mass Spectrometer data. Atmos. Chem. Phys. 8, 2227–2240 (A. P. Grieshop, N. M. Donahue, and A. L. Robinson) 2009 (8).

  83. Constraining the volatility distribution and gas-particle partitioning of combustion aerosols using isothermal dilution and thermodenuder measurements. Environ. Sci. Technol. 43, 4750–4756 (A. P. Grieshop, M. A. Miracolo, N. M. Donahue, and A. L. Robinson) 2009 (3).

  84. Intermediate-volatility organic compounds: A potential source of ambient oxidized organic aerosol. Environ. Sci. Technol. 43, 4744–4749 (A. A. Presto, M. A. Miracolo, N. M. Donahue, A. L. Robinson, J. H. Kroll, and D. R. Worsnop) 2009 (3).

  85. Rate constants of nine C6-C9 alkanes with OH from 230-379 K: Chemical tracers for [OH]. J. Phys. Chem. A 113, 5030–5038 (M. M. Sprengnether, K. L. Demerjian, T. J. Dransfield, J. S. Clarke, N. M. Donahue, and J. G. Anderson) 2009.

  86. Laboratory investigation of photochemical oxidation of organic aerosol from wood fires 1: measurement and simulation of organic aerosol evolution. Atmos. Chem. Phys. 8, 1263–1277 (A. P. Grieshop, J. M. Logue, N. M. Donahue, and A. L. Robinson) 2009 (12).

  87. Atmospheric organic particulate matter: From smoke to secondary organic aerosol. Atmos. Environ. 43, 94–106 (N. M. Donahue, A. L. Robinson, and S. N. Pandis) 2009 (12).

  88. Origin, composition and volatility of aged aerosol in the eastern Mediterranean: The Finokalia aerosol measurement experiment - 2008. Atmos. Chem. Phys. Discus. 10, 1847–1900 (L. Hildebrandt, G. J. Englehardt, C. Mohr, E. Kostenidou, A. Bougiatioti, U. Baltensperger, N. Mihalopoulos, N. M. Donahue, and S. N. Pandis) 2010.

  89. Updating our conceptual model for fine particle mass emissions from combustion systems J. Am.Waste Manage. Assoc. 60 1204-1222(A. L. Robinson, A. P. Grieshop, N. M. Donahue, and S. W.) 2010.

  90. Organic aerosol components observed in worldwide datasets from aerosol mass spectrometry. Atmos. Chem. Phys. Discuss. 9, 27745—27789 (N. L. Ng, M. R. Canagaratna, Q. Zhang, J. L. Jimenez, J. Tian, I. M. Ulbrich, J. H. Kroll, K. S. Docherty, P. S. Chhabra, R. Bahreini, S. M. Murphy, J. H. Seinfeld, L. Hildebrandt, N. M. Donahue, P. F. DeCarlo, V. A. Lanz, A. S. H. Prevot, E. Dinar, Y. Rudich, and D. R. Worsnop) 2009.

  91. Aerosol analysis using a proton-transfer-reaction thermo-desorption mass spectrometer PTR-TD-MS: A new approach to study processing of organic aerosols. Atmos. Chem. Phys. 9, 25983–26012 (R. Holzinger, J. Williams, F. Hermann, J. Lelieveld, N. M. Donahue, and T. R¨ockmann) 2010. [5] Secondary organic aerosol formation from high-NOx photo-oxidation of low-volatility precursors: nalkanes. Environ. Sci. Technol. 44, in press (A. A. Presto, M. A. Miracolo, N. M. Donahue, and A. L. Robinson) 2010.

  92. The HOOH UV spectrum: Importance of the transition dipole moment and torsional motion from semiclassical calculations on an ab-initio PES. J. Chem. Phys. 132, 084304 (G. T. Drozd, A. Melnichuk, and N. M. Donahue) 2010.

  93. Photo-oxidation of low-volatility organics found in motor vehicle emissions: production and chemical volution of organic aerosol mass. Environ. Sci. Technol. 44 (M. A. Miracolo, A. A. Presto, A. T. Lambe, C. J. Hennigan, N. M. Donahue, J. H. Kroll, 1638-1643 (D. R. Worsnop, and A. L. Robinson) 2010.

  94. Equilibration time scales of organic aerosol inside thermodenuders: Evaporation kinetics versus thermodynamics. Atmos. Environ. 44 597-607 (I. Riipinen, J. R. Pierce, N. M. Donahue, and S. N. Pandis) 2010.

  95. Organic aerosol formation in citronella candle plumes. Air Quality, Atmosphere and Health 3, 131-137 (M. Bothe and N. M. Donahue) 2010.

  96. A semi-empirical correlation between enthalpy of vaporization and saturation concentration for organic aerosol. Environ. Sci. Technol. 44 743-748 (S. A. Epstein, I. Riipinen, and N. M. Donahue) 2010.

  97. Humidity effects on organic aerosol partitioning following the _-pinene + ozone reaction. Geophys. Res. Lett. 37, L01802 (N. Prisle, G. J. Engelhart, M. Bilde, and N. M. Donahue) 2010.

  98. Organic aerosol speciation: Intercomparison of thermal desorption aerosol GC/MS (TAG) and filterbased techniques. Aerosol Sci. Technol. 44, 141–151 (A. T. Lambe, H. J. Chacon-Madrid, N. T. Nguyen, E. A. Weitkamp, N. M. Kreisberg, S. V. Hering, A. H. Goldstein, N. M. Donahue, and A. L. Robinson) 2010.


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