Professor, Chemistry
School of Physical Sciences

Atmospheric Chemistry, Heterogeneous and Multiphase Chemistry, Aerosol Particles, Reactive Oxygen Species, Kinetic Modeling

Group HP

Kenneth T. Whitby Award, American Association for Aerosol Research (2020)
ES&T and ES&T Letters Early Career Scientist, American Chemical Society (2019)
Walter A. Rosenblith New Investigator Award, Health Effects Institute (2018)
Paul J. Crutzen Award for Early Career Scientists, iCACGP (2018)
Make Our Planet Great Again (MOPGA) short stay program, Campus France (2018)
NSF CAREER Award, National Science Foundation (2017)
Young Scientist Award, Japan Society for Atmospheric Chemistry (2015)
Sheldon K. Friedlander Award, American Association for Aerosol Research (2014)
Paul-Crutzen Prize, German Chemical Society (2012)
JSPS Postdoctoral Fellowships for Research Abroad (2012)
Otto-Hahn Medal, Max Planck Society (2011)

2022 - Professor, Department of Chemistry, University of California, Irvine
2018 - 2022 Associate Professor, Department of Chemistry, University of California, Irvine
2016 - 2018 Assistant Professor, Department of Chemistry, University of California, Irvine
2015 - 2019 Adjunct Associate Professor, Graduate School for Environmental Studies, Nagoya University, Japan
2013 - 2016 Group leader, Multiphase Chemistry Department, Max Planck Institute for Chemistry, Germany
2012 - 2013 JSPS Postdoc fellow, California Institute of Technology

The Shiraiwa group focuses on the properties and multiphase processes of aerosol particles and their effects on atmospheric chemistry, air quality and human health. Aerosol particles are ubiquitous in the atmosphere, affecting climate, air quality, and public health. Organic aerosols account for a major fraction of fine particulate matter in the atmosphere. Formation and growth of secondary organic aerosols (SOA) is triggered by reaction of ozone and OH radicals with volatile organic compounds emitted from various biogenic and anthropogenic sources followed by condensation of oxidation products. Multiphase chemistry of aerosols are also efficient pathways for SOA formation and aging Heterogeneous reactions of atmospheric oxidants can affect the abundance of trace gases and significantly alter the particles’ physical and chemical properties such as their toxicity, ice and cloud activation abilities, and radiative properties. Multiphase chemistry deals with chemical reactions, transport processes, and transformations between gaseous, liquid, and solid matter. These processes are essential for Earth system science and climate research as well as for life and health sciences on molecular and global levels, bridging a wide range of spatial and temporal scales from below nanometers to thousands of kilometers and from less than nanoseconds to years. Knowledge of the mechanisms and kinetics of these processes is also required to address societally relevant questions of global environmental change and public health.

Key Topics:
- Gas uptake, formation, evolution and partitioning of organic aerosols
- Multiphase chemical processes at the atmosphere-biosphere interface including lung lining fluid and human skin
- Reactive Oxygen Species/Intermediates (ROS/ROI), allergenic proteins and their health effects

Methods:
- Kinetic flux models for gas-particle interactions in aerosols and clouds
- Chamber, coated wall and aerosol flow tube experiments
- Combination of numerical modeling, laboratory experiments, and field measurements on organic aerosol & oxidant chemistry

Wang, W., Ezell, M. J., Lakey, P. S. J., Aregahegn, K. Z., Shiraiwa, M.* and Finlayson-Pitts, B. J.*: Unexpected formation of oxygen-free products and nitrous acid from the ozonolysis of the neonicotinoid nitenpyram, Proc. Natl. Acad. Sci. U.S.A., 117, 11321-11327, 2020.

Zhou, S., Hwang, B. C. H., Lakey, P. S. J., Zuend, A., Abbatt, J. P. D.* and Shiraiwa, M.*: Multiphase reactivity of polycyclic aromatic hydrocarbons is driven by phase separation and diffusion limitations, Proc. Natl. Acad. Sci. U.S.A., 116(24):11658-11663, 2019.

Lakey, P. S. J., Morrison, G. C., Won, Y., Parry, K. M., von Domaros, M., Tobias, D. J.*, Rim, D.*, and Shiraiwa, M.*: The impact of clothing on ozone and squalene ozonolysis products in indoor environments, Commun. Chem., 2, 56, 2019.

Mu, Q., Shiraiwa, M., Octaviani, M., Ma, N., Ding, A., Su, H., Lammel, G., Pöschl, U. and Cheng, Y.: Temperature effect on phase state and reactivity controls atmospheric multiphase chemistry and transport of PAHs, Science Advances, 4, eaap7314, 2018.

Shiraiwa, M., Y. Li, A. P. Tsimpidi, V. A. Karydis, T. Berkemeier, S. N. Pandis, J. Lelieveld, T. Koop, U. Pöschl: Global distribution of particle phase state in atmospheric secondary organic aerosols, Nature Commun., 8, 15002, 2017.

Tong, H., A. M. Arangio, P. S. J. Lakey, T. Berkemeier, F. Liu, C. J. Kampf, W. H. Brune, U. Pöschl, and M. Shiraiwa: Hydroxyl radicals from secondary organic aerosol decomposition in water, Atmos. Chem. Phys., 16, 1761-1771, 2016.

Pöschl, U. & Shiraiwa, M.: Multiphase Chemistry at the Atmosphere–Biosphere Interface Influencing Climate and Public Health in the Anthropocene, Chem. Rev., 115(10), 4440–4475, 2015.

Shiraiwa, M., Berkemeier, T., Schilling-Fahnestock, K. A., Seinfeld, J. H., and Pöschl, U.: Molecular corridors and kinetic regimes in the multiphase chemical evolution of secondary organic aerosol, Atmos. Chem. Phys., 14, 8323-8341, 2014.

Shiraiwa, M., Yee, L. Y., Schilling, K. A., Loza, C. L., Craven, J. S., Zuend, A., Ziemann, P. J. and Seinfeld, J.H.: Size distribution dynamics reveal particle-phase chemistry in organic aerosol formation, Proc. Natl. Acad. Sci. USA, 110(29), 11746-11750, 2013.

Pöhlker, C., Wiedemann, K. T., Sinha, B., Shiraiwa, M., Gunthe, S. S., Smith, M., Su, H., Artaxo, P., Chen, Q., Cheng, Y., Elbert, W., Gilles, M. K., Kilcoyne, A. L. D., Moffet, R. C., Weigand, M., Martin, S. T., Pöschl, U. & Andreae, M. O.: Biogenic Potassium Salt Particles as Seeds for Secondary Organic Aerosol in the Amazon, Science, 337, 1075, 2012.

Shiraiwa, M. and Seinfeld, J. H.: Equilibration timescale of atmospheric secondary organic aerosol partitioning, Geophys. Res. Lett., 39, L24801, 2012.

Shiraiwa, M., M. Ammann, T. Koop & U. Pöschl, Gas uptake and chemical aging of semi-solid organic aerosol particles, Proc. Natl. Acad. Sci. USA, 108, 11003-11008, 2011.

Shiraiwa, M., Y. Sosedova, A. Rouviere, H. Yang, Y. Zhang, J.P.D. Abbatt, M. Ammann, U. Pöschl, The role of long-lived reactive oxygen intermediates in the reaction of ozone with aerosol particles, Nature Chem., 3, 291-295, 2011.

American Geophysical Union (AGU)

American Association for Aerosol Research (AAAR)

American Chemical Society (ACS)

Chemistry

Link to this profile
https://faculty.uci.edu/profile/?facultyId=6256

Last updated
07/03/2022