个人简介

Ph.D.: Penn State, 1991 Awards and Honors: 2001 Kenneth T. Whitby Award, American Association for Aerosol Research

研究领域

Aerosols & Clouds Instrument Development Trace Gases & Radicals Environmental Chemistry Atmospheric/Astrochemistry

The primary focus of our group's research is to elucidate mechanisms by which volatile organic compounds emitted from biogenic and anthropogenic sources react in the atmosphere to form products that can create submicron-size organic aerosol particles. These reactions are complex and include photochemistry, gas-phase oxidation, and heterogeneous/multiphase reactions. The resulting particles affect global climate, visibility, and human health. We conduct experiments in large-volume environmental chambers under simulated atmospheric conditions and then identify and quantify organic gas and aerosol reaction products using a variety of analytical instruments and methods. This information is used to develop detailed, quantitative chemical reaction mechanisms for predicting organic aerosol formation, which can be used to improve air quality and global climate models.

近期论文

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Liu, P., Ziemann, P.J., Kittelson, D.B., McMurry, P.H. 1995. Generating particle beams of controlled dimensions and divergence: I. Theory of particle motion in aerodynamic lenses and nozzle expansions. Aerosol Science and Technology, 22, 293-313. Tobias, H.J., Ziemann, P.J. 1999. Compound identification in organic aerosols using temperature-programmed thermal desorption particle beam mass spectrometry. Analytical Chemistry, 71, 3428-3435. Tobias, H.J., Kooiman, P.M., Docherty, K.S., Ziemann, P.J. 2000. Real-time chemical analysis of organic aerosols using a thermal desorption particle beam mass spectrometer. Aerosol Science and Technology, 33, 170-190. Tobias, H.J., Ziemann, P.J. 2000. Thermal desorption mass spectrometric analysis of organic aerosol formed from reactions of 1-tetradecene and O3 in the presence of alcohols and carboxylic acids. Environmental Science and Technology, 34, 2105-2115. Docherty, K.S., Ziemann, P.J. 2001. On-line, inlet-based trimethylsilane derivatization for gas chromatography of mono- and dicarboxylic acids. Journal of Chromatography A, 921, 265-275. Tobias, H.J., Beving, D.E., Ziemann, P.J., Sakurai, H., Zuk, M., McMurry, P.H., Zarling, D., Waytulonis, R., Kittelson, D.B. 2001. Chemical analysis of diesel engine nanoparticles using a nano-DMA/thermal desorption particle beam mass spectrometer. Environmental Science and Technology, 35, 2233-2243. Tobias, H.J., Ziemann, P.J. 2001. Kinetics of the gas-phase reactions of alcohols, aldehydes, carboxylic acids, and water with the C13 Criegee intermediates formed from ozonolysis of 1-tetradecene. Journal of Physical Chemistry A, 105, 6129-6135. Docherty, K.S., Ziemann, P.J. 2003. Effects of stabilized Criegee intermediate and OH radical scavengers on aerosol formation from reactions of β-pinene with O3. Aerosol Science and Technology, 37, 877-891. Ziemann, P.J. 2005. Aerosol products, mechanisms, and kinetics of heterogeneous reactions of ozone with oleic acid in pure and mixed particles. Faraday Discussions, 130, 469-490. Docherty, K.S., Wu, W., Lim, Y.B., Ziemann, P.J. 2005. Contributions of organic peroxides to secondary aerosol formed from reactions of monoterpenes with O3. Environmental Science and Technology, 39, 4049-4059. Lim, Y.B., Ziemann, P.J. 2009. Chemistry of secondary organic aerosol formation from OH radical-initiated reactions of linear, branched, and cyclic alkanes in the presence of NOx. Aerosol Science and Technology, 43, 604-619. Matsunaga, A., Docherty, K.S., Lim, Y.B., Ziemann, P.J. 2009. Composition and yields of secondary organic aerosol formed from OH radical-initiated reactions of linear alkenes in the presence of NOx: Modeling and measurements. Atmospheric Environment, 43, 1349-1357. Lim, Y.B., Ziemann, P.J. 2009. Effects of molecular structure on aerosol yields from OH radical-initiated reactions of linear, branched, and cyclic alkanes in the presence of NOx. Environmental Science and Technology, 43, 2328-2334. Lim, Y.B., Ziemann, P.J. 2009. Kinetics of the heterogeneous conversion of 1,4-hydroxycarbonyls to cyclic hemiacetals and dihydrofurans on organic aerosol particles. Physical Chemistry Chemical Physics, 11, 8029-8039. Matsunaga, A., Ziemann, P.J. 2010. Yields of β-hydroxynitrates, dihydroxynitrates, and trihydroxynitrates formed from OH radical-inititated reactions of 2-methyl-1-alkenes. Proceedings of the National Academy of Sciences, 107, 6664-6669. Matsunaga, A., Ziemann, P.J. 2010. Gas-wall partitioning of organic compounds in a Teflon film chamber and potential effects on reaction product and aerosol yield measurements. Aerosol Science and Technology, 44, 881-892. Russell, L.M., Bahadur, R., Ziemann, P.J. 2011. Identifying organic aerosol sources by comparing functional group composition in chamber and atmospheric particles. Proceedings of the National Academy of Sciences, 108, 3516-3521. Ziemann, P.J. 2011. Effects of molecular structure on the chemistry of aerosol formation from the OH-radical-initiated oxidation of alkanes and alkenes. International Reviews in Physical Chemistry, 30, 161-195. Suda, S.R., Petters, M.D., Matsunaga, A., Sullivan, R.C., Ziemann, P.J., Kreidenweis, S.M. 2011. Hygroscopicity frequency distributions of secondary organic aerosols. Geophysical Research Letters, 117, D04207, doi:10.1029/2011JD016823. Ziemann, P.J. Atkinson, R. 2012. Kinetics, products, and mechanisms of secondary organic aerosol formation. Chemical Society Reviews, 41, 6582-6605. Aimanant, S., Ziemann, P.J., 2013. Development of spectrophotometric methods for the analysis of functional groups in oxidized organic aerosol. Aerosol Science and Technology, 47, 581–591.