Sergey A. Nizkorodov
Professor of Chemistry, Department of Chemistry, University of California, Irvine
Biography
Sergey A. Nizkorodov, Ph.D., is Professor of Chemistry in the Department of Chemistry at the University of California, Irvine. He received his undergraduate degree in biochemistry from Novosibirsk State University, Russia, in 1993 and his Ph.D. in physical chemistry from the University of Basel, Switzerland, in 1997. After postdoctoral research at the University of Colorado at Boulder and the California Institute of Technology, he joined the UCI faculty in 2002. Nizkorodov's research focuses on the chemistry of particulate matter in ambient and indoor atmospheres using spectroscopic and mass-spectrometric techniques.
Nizkorodov is an elected Fellow of the American Association for the Advancement of Science and the American Association for Aerosol Research. He served as President of the American Association for Aerosol Research in 2020-21. He has received the Coblentz Award from the Coblentz Society, the Camille Dreyfus Teacher-Scholar Award, the Ascent Award from the American Geophysical Union, and a Fulbright Scholarship. At UCI, he has been recognized with the Chancellor's Award for Excellence in Fostering Undergraduate Research, the Daniel G. Aldrich, Jr. Distinguished University Service Award, and the Professor of the Year Award.
Nizkorodov has mentored over 100 graduate, undergraduate, high school, and postdoctoral students in his research group. He has taught general chemistry, analytical chemistry, and atmospheric chemistry courses at UCI. He has served in various leadership roles at UCI, including as Vice-Chair for Academic Programs and Curriculum in the Department of Chemistry and as Co-Director of the AirUCI Organized Research Unit. He has organized multiple symposia and conferences in atmospheric chemistry and served on editorial boards for Atmospheric Chemistry and Physics and Atmosphere.
Return to topEducation
- Ph.D. in Chemistry, University of Basel, 1997
- Diploma of Higher Education in Chemistry, Novosibirsk State University, 1993
Distinctions
- Fulbright Scholarship, University of Eastern Finland, Fulbright-Saastamoinen Foundation Grant in Health and Environmental Sciences, 2016-2017
- Fellow of the American Association for the Advancement of Science (AAAS), 2015
- Fellow of the American Association for Aerosol Research (AAAR), 2022
- Aerosol Science and Technology Outstanding Reviewer, 2022
- Daniel G. Aldrich, Jr. Distinguished University Service Award, UCI, 2021-2022
- Ascent Award, American Geophysical Union, 2013
- Dr. De Gallow Professor of the Year, Division of Teaching Excellence and Innovation (DTEI), UCI, 2022
- Coblentz Award, Coblentz Society, 2005
- UCI School of Physical Sciences Award for Outstanding Contributions to Undergraduate Education, 2006, 2021
- Camille Dreyfus Teacher-Scholar Award, 2007
Areas of Expertise
- Atmospheric Chemistry
- Secondary Organic Aerosol Formation
- Photochemical Aging Mechanisms
- Brown Carbon Chromophores
- Biomass Burning Emissions
- Mass Spectrometry Characterization
- Aqueous Photochemistry Processes
Recent Publications
- Weltman R.M., Edwards R.D., Staimer N., Pillarisetti A., Arora N.K., Nizkorodov S.A., “Ethyne Furan Ratios as Indicators of High and Low Temperature p-PAH Emissions from Household Stoves in Haryana India” (opens in new tab), Atmosphere, vol. 16, 2025.
- Katherine S. Hopstock, Qiaorong Xie, Michael A. Alvarado, Vaios Moschos, Solomon Bililign, Jason D. Surratt, Alexander Laskin, Sergey A. Nizkorodov, “Molecular characterization and photoreactivity of organic aerosols from urban material combustion at the wildland-urban interface” (opens in new tab), ACS ES&T Air, 2024.
- Cynthia Wong, Jett Vuong, Sergey A Nizkorodov, “Biogenic and anthropogenic secondary organic aerosols become fluorescent after highly acidic aging” (opens in new tab), Journal of Physical Chemistry A, vol. 128, pp. 7657-7668, 2024.
- Avery B. Dalton, Lisa M. Wingen, Sergey A. Nizkorodov, “Isomeric identification of the nitroindole chromophore in indole + NO3 organic aerosol” (opens in new tab), ACS Physical Chemistry Au, vol. 4, pp. 568-574, 2024.
- Katherine S. Hopstock, Véronique Perraud, Avery B. Dalton, Barbara Barletta, Simone Meinardi, Robert M. Weltman, Megan A. Mirkhanian, Krisztina J. Rakosi, Donald R. Blake, Rufus D. Edwards, Sergey A. Nizkorodov, “Chemical analysis of exhaled vape emissions: unraveling the complexities of humectant fragmentation in a human trial study” (opens in new tab), Chemical Research in Toxicology, vol. 37, pp. 1000-1010, 2024.
- Sijia Liu, Tommaso Galeazzo, Richard Valorso, Manabu Shiraiwa, Celia L. Faiola, Sergey A Nizkorodov, “Secondary organic aerosol from OH-initiated oxidation of mixtures of d-limonene and β-myrcene” (opens in new tab), Environmental Science and Technology, vol. 58, pp. 13391-13401, 2024.
- Cynthia Wong, Jessica E. Pazienza, Scott D. Rychnovsky, Sergey A Nizkorodov, “Formation of chromophores from cis-pinonaldehyde aged in highly acidic conditions” (opens in new tab), Journal of the American Chemical Society, vol. 146, pp. 11702-11710, 2024.
- Gerritz L., Perraud V., Weber K.M., Shiraiwa M., Nizkorodov S.A., “Application of UHPLC-ESI-MS/MS to Identify Free Radicals via Spin Trapping with BMPO” (opens in new tab), Journal of Physical Chemistry A, vol. 128, pp. 10240-10249, 2024.
- Avery B. Dalton, Dmitry A. Fishman, Sergey A. Nizkorodov, “Ultrafast excited-state proton transfer in 4-nitrocatechol: implications for the photochemistry of nitrophenols” (opens in new tab), Journal of Physical Chemistry A, vol. 127, pp. 8307-8315, 2023.
- Katherine S. Hopstock, Alexandra L. Klodt, Qiaorong Xie, Michael A. Alvarado, Alexander Laskin, Sergey A. Nizkorodov, “Photolytic aging of organic aerosol from pyrolyzed urban materials” (opens in new tab), Environmental Science: Atmospheres, vol. 3, pp. 1272-1285, 2023.
- Alexandra L. Klodt, Paige K. Aiona, Amanda C. MacMillan, Hyun Ji (Julie) Lee, Xiaolu Zhang, Taylor Helgestad, Gordon A. Novak, Peng Lin, Julia Laskin, Alexander Laskin, Timothy H. Bertram, Christopher D. Cappa, Sergey A. Nizkorodov, “Effect of relative humidity, NOx, and ammonia on physical properties of naphthalene secondary organic aerosol” (opens in new tab), Environmental Science: Atmospheres, vol. 3, pp. 991-1007, 2023.
- Natalie R. Smith, Giuseppe V. Crescenzo, Allan K. Bertram, Sergey A. Nizkorodov, Celia L. Faiola, “Insect infestation increases viscosity of biogenic secondary organic aerosol” (opens in new tab), ACS Earth and Space Chemistry, vol. 7, pp. 1060-1071, 2023.
- Vahe J. Baboomian, Quanfu He, Julia Montoya-Aguilera, Nujhat N. Ali, Lauren T. Fleming, Peng Lin, Alexander Laskin, Julia Laskin, Yinon Rudich, Sergey A. Nizkorodov, “Light absorption and scattering properties of indole secondary organic aerosol prepared under various oxidant and relative humidity conditions” (opens in new tab), Aerosol Science and Technology, vol. 57, pp. 532-545, 2023.
- Avery B. Dalton, Scott M. Le, Natalia V. Karimova, R. Benny Gerber, Sergey A. Nizkorodov, “Influence of solvent on electronic structure and the photochemistry of nitrophenols” (opens in new tab), Environmental Science: Atmospheres, vol. 3, pp. 257-267, 2023.
- Katherine S. Hopstock, Brooke P. Carpenter, Joseph P. Patterson, Hind A. Al-Abadleh, Sergey A. Nizkorodov, “Formation of insoluble brown carbon through iron-catalyzed reaction of biomass burning organics” (opens in new tab), Environmental Science: Atmospheres, vol. 3, pp. 207-220, 2023.
- Kameryn Denaro, Sergey A. Nizkorodov, Amanda J. Holton, “The impact of modality choice on final exam success and retention in a concurrent preparatory chemistry course” (opens in new tab), Journal of Chemical Education, vol. 100, pp. 4585-4596, 2023.
- Cynthia Wong, Sijia Liu, Sergey A. Nizkorodov, “Highly acidic conditions drastically alter the chemical composition and absorption coefficient of α-pinene secondary organic aerosol” (opens in new tab), ACS Earth and Space Chemistry, vol. 6, pp. 2983-2994, 2022.
- Alexandra L. Klodt, Marley Adamek, Monica Dibley, Sergey A. Nizkorodov, Rachel E. O'Brien, “Effects of the sample matrix on the photobleaching and photodegradation of toluene-derived secondary organic aerosol compounds” (opens in new tab), Atmospheric Chemistry and Physics, vol. 22, pp. 10155-10171, 2022.
- Vahe J. Baboomian, Giuseppe V. Crescenzo, Yuanzhou Huang, Fabian Mahrt, Manabu Shiraiwa, Allan K. Bertram, Sergey A. Nizkorodov, “Sunlight can convert atmospheric aerosols into a glassy solid state and modify their environmental impacts” (opens in new tab), Proceedings of the National Academy of Sciences of the United States of America, vol. 119, pp. e2208121119, 2022.
- Shupeng Zhu, Kai Wu, Sergey A. Nizkorodov, Donald Dabdub, “Modeling reactive ammonia uptake by secondary organic aerosol in a changing climate: a WRF-CMAQ evaluation” (opens in new tab), Frontiers in Environmental Science, vol. 10, pp. 867908, 2022.
Most Cited Publications
- Alexander Laskin, Julia Laskin, Sergey A. Nizkorodov, “Chemistry of atmospheric brown carbon” (opens in new tab), Chemical Reviews, vol. 115, pp. 4335-4382, 2015.
- Christian George, Markus Ammann, Barbara D'Anna, D. James Donaldson, Sergey A. Nizkorodov, “Heterogeneous photochemistry in the atmosphere” (opens in new tab), Chemical Reviews, vol. 115, pp. 4218-4258, 2015.
- Katelyn M. Updyke, Tran B. Nguyen, Sergey A. Nizkorodov, “Formation of brown carbon via reactions of ammonia with secondary organic aerosols from biogenic and anthropogenic precursors” (opens in new tab), Atmospheric Environment, vol. 63, pp. 22-31, 2012.
- David L. Bones, Dana K. Henricksen, Stephen A. Mang, Michael Gonsior, Adam P. Bateman, Tran B. Nguyen, William J. Cooper, Sergey A. Nizkorodov, “Appearance of strong absorbers and fluorophores in limonene-O₃ secondary organic aerosol due to NH₄⁺-mediated chemical aging over long time scales” (opens in new tab), Journal of Geophysical Research: Atmospheres, vol. 115, pp. D05203, 2010.
- Hyun Ji (Julie) Lee, Paige K. Aiona, Alexander Laskin, Julia Laskin, Sergey A. Nizkorodov, “Effect of solar radiation on the optical properties and molecular composition of laboratory proxies of atmospheric brown carbon” (opens in new tab), Environmental Science and Technology, vol. 48, pp. 10217-10226, 2014.
- Tran B. Nguyen, Paula B. Lee, Katelyn M. Updyke, David L. Bones, Julia Laskin, Alexander Laskin, Sergey A. Nizkorodov, “Formation of nitrogen- and sulfur-containing light-absorbing compounds accelerated by evaporation of water from secondary organic aerosols” (opens in new tab), Journal of Geophysical Research: Atmospheres, vol. 117, pp. D01207, 2012.
- Peng Lin, Lauren T. Fleming, Sergey A. Nizkorodov, Julia Laskin, Alexander Laskin, “Comprehensive molecular characterization of atmospheric brown carbon by high resolution mass spectrometry with electrospray and atmospheric pressure photoionization” (opens in new tab), Analytical Chemistry, vol. 90, pp. 12493-12502, 2018.
- Lauren T. Fleming, Peng Lin, James M. Roberts, Vanessa Selimovic, Robert Yokelson, Julia Laskin, Alexander Laskin, Sergey A. Nizkorodov, “Molecular composition and photochemical lifetimes of brown carbon chromophores in biomass burning organic aerosol” (opens in new tab), Atmospheric Chemistry and Physics, vol. 20, pp. 1105-1129, 2020.
- Peng Lin, Sergey A. Nizkorodov, Julia Laskin, Alexander Laskin, “Revealing brown carbon chromophores produced in reactions of methylglyoxal with ammonium sulfate” (opens in new tab), Environmental Science and Technology, vol. 49, pp. 14257-14266, 2015.
- Sergey A. Nizkorodov, Julia Laskin, Alexander Laskin, “Molecular chemistry of organic aerosols through the application of high resolution mass spectrometry” (opens in new tab), Physical Chemistry Chemical Physics, vol. 13, pp. 3612-3629, 2011.
Contact Information
Website: https://aerosol.chem.uci.edu/
Email: nizkorod@uci.edu
Phone: (949) 824-1262
Address: 377 Rowland Hall, Irvine, CA 92697-2025
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Last updated on 2/17/2026.