Ole John Nielsen
Department of Chemistry
University of Copenhagen
Universitetparken 5
2100 Copehagen Ø
Denmark
Phone +45 35320331
Fax: +45 35350609
Email: ojn@kiku.dk

Professor of atmospheric chemistry since 1999. Previously employed 21 years with Risø National Laboratory and 1½ years with Ford Motor Company. MSc from the University of Copenhagen (UoC) in 1978 in spectroscopy and PhD from UoC in 1984 in atmospheric chemistry. Teaching environmental chemistry.

Research Interests:

1. Atmospheric chemistry and hence environmental impact of CFC replacement compounds and of oxygenated species.
2. Fundamental kinetics and mechanisms of reactions important in atmospheric and combustion chemistry.
3. Determination of the environmental impact of anthropogenic and natural emissions – out-door as well as in-door chemistry
4. Atmospheric particulates.
5. Air pollution chemistry.
6. Global Change.


Recent publications:



174) O. J. Nielsen, M.S. Javadi, M. P. Sulbaek Andersen, M. D. Hurley, T. J. Wallington, R. Singh: Atmospheric Chemistry of CF3CF=CH2: Kinetics and Mechanisms of Gas-Phase Reactions with Cl atoms, OH radicals, and O3. Chem. Phys. Lett. 439, 18-22 (2007)

175) J.K. Nøjgaard, M. Bilde, C. Stenby, O.J. Nielsen, P. Wolkoff: The effect of nitrogen dioxide on particle formation during ozonolysis of two abundant monoterpenes indoors. Atm. Environ. 40 1030-1042 (2006)


176) T. Nakayama, K. Takahashi, Y. Matsumi, A. Toft, M. P. Sulbaek Andersen, O. J. Nielsen, R. L. Waterland, R. C. Buck, M. D. Hurley, T. J. Wallington: Atmospheric Chemistry of CF3CH=CH2 and C4F9CH=CH2: Products of the Gas-Phase Reactions with Cl Atoms and OH Radicals. J. Phys. Chem. A 111, 909-915 (2007)


177) M. D. Hurley, J. C. Ball, T. J. Wallington, A. Toft, O. J. Nielsen, S. Bertman, M. Perovic: Atmospheric Chemistry of a Model Biodiesel Fuel, CH3C(O)O(CH2)2OC(O)CH3: Kinetics, Mechanisms and Products of Cl Atom and OH Radical Initiated Oxidation in the Presence and Absence of NOx. J.Phys.Chem.A. 111, 2547-2554 (2007)


178) O.J. Nielsen: Kinetics of the reaction of OH radicals with cyclic alkanes at 298 K. Asian Chemistry Letters, Accepted (2007).


179) C. Stenby, U. Pöschl, P. von Hessberg, M. Bilde, O. J. Nielsen, G. K. Moortgat: Temperature and humidity dependence of secondary organic aerosol yield from the ozonolysis of ß-pinene. Atmos. Chem. Phys. Discuss., 7, 2091-2132 (2007)


180) M.P.S. Andersen, O.J. Nielsen, T.J. Wallington, M.D. Hurley, S.A. Mabury, D.A. Ellis, J. Martin, J. Xia, D.J. Wuebbles, A. Ito, J.E. Penner, S. Sillmann:
Atmospheric degradation of Fluorotelomer alcohols (FTOHs): The answer to an Arctic mystery. Abstracts of papers of the American Chemical Society 231 21 (2006)

181) R. Søndergaard, O. J. Nielsen, M. D. Hurley, T. J. Wallington, R. Singh: Atmospheric Chemistry of trans-CF3CF=CHF: Kinetics and Mechanisms of Gas-Phase Reactions with Cl atoms, OH radicals, and O3. Chem. Phys. Lett. 443, 199-204 (2007)

182) M.S. Javadi, O. J. Nielsen, M. D. Hurley, T. J. Wallington, J. Owens: Atmospheric Chemistry of 2-ethoxy-3,3,4,4,5-pentafluorotetrahydro-2,5-bis[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]-furan. Env.Sci.Tech. Accepted (2007)

183) M. D. Hurley, M.S. Javadi, O. J. Nielsen, , T. J. Wallington, R. Singh: Atmospheric Chemistry of CF3CF=CH2: Products and Mechanisms of Cl atoms and OH radicals Initiated Oxidation. Chem. Phys. Lett., Submitted (2007)

184) T. J. Wallington, S. A. Mabury, M. D. Hurley, M. P. Sulbaek Andersen, O. J. Nielsen, D. A. Ellis, and J. W. Martin: Comment on "Atmospheric Chemistry of Linear Perfluorinated Aldehydes: Dissociation Kinetics of CnF2n+1CO Radicals" by Waterland and Dobbs. J.Phys.Chem. (2007) accepted.

185) M.S. Javadi, R. Søndergaard, O.J. Nielsen, M.D. Hurley, T.J. Wallington, R. Singh: Atmospheric Chemistry of CF3CF=CHF: Products and Mechanisms of Hydroxyl Radical and Chlorine atom Initiated Oxidation. Chem.Phys.Lett., Submitted 2007.