Latest News
October 22, 2025
Kudos to Julius on reaching PhD candidacy! Wishing you continued success ahead.
October 22, 2025
Congratulations to Catalina, on passing on to your PhD candidacy!
October 7, 2025
On we go, celebrating Diego on his brilliant PhD dissertation defense! What an incredible achievement and well-deserved success.
September 25, 2025
Congratulations to Tope, who won the Pfizer Poster Presentation Award at the 52nd NOBCChE Conference in Atlanta, GA.
August 11, 2025
Hats off to Dr. Emily Halpern on elebrating your commencement and all the successes to come!
@alaskinlab
Welcome!
We are a multi-disciplinary experimental group with research interests in the areas of Analytical and Physical Chemistry of airborne particles and environmental interfaces, driven by the overarching goals of understanding their impact on the atmospheric chemistry, the air pollution and the Earth’s climate. Our research efforts include three inter-related areas: Development and applications of new analytical methods for chemical characterization of aerosols; Chemical imaging and molecular-level studies of field collected particles; Laboratory studies of multi-phase chemistry of particles and interfaces.
Contact Us:
Department of Chemistry
Purdue University
560 Oval Drive
West Lafayette, IN 47907-2084
Phone: (765) 494-5243
Email: alaskin@purdue.edu
Twitter: @alaskinlab
Recent Publications
264) D. Calderon-Arrieta, J. Knull, S. Sarker, J. Wang, L. Evans, J. Ese, S. Koloski, A. Smith, N. Hajian, K. Hill, B. Sinha and A. Laskin, Atmospheric Brown Carbon from Biofuel Pyrolysis: Comparative Analysis of Dung and Wood Sources, Environmental Science: Atmosphere, (2025). https://doi.org/10.1039/D5EA00105F
263) S. Sharpe, Y. Li, S. Benjemia, F. Rivera-Adorno, T. E. Olayemi, J. Ese, X. Shen, M. Fraund, R. C. Moffet, N. N. Lata, Z. Cheng, S. China, C. R. Homeyer, J. Dykema, M. A. Marcus, J. Wang, D. J. Cziczo, F. N. Keutsch and A. Laskin, Chemical imaging of individual stratospheric particles sampled over North America, Environmental Science: Atmosphere, (2025). https://doi.org/10.1039/D5EA00127G
262) D. Calderon-Arrieta, J. Knull, Q. Xie, C. Li, J. Wang, L. Evans, N. Hajian, K. Hill, Y. Rudich and A. Laskin, Photolytic Transformation of Soluble and Colloidal Components in Atmospheric Brown Carbon, ACS ES&T Air, (2025). https://doi.org/10.1021/acsestair.5c00301
261) Q. Xie, S. Nikkho, Z. M. Golay, I. S. Morton, E. R. Halpern, R. VanGundy, A. Zelenyuk, M. Shrivastava, R. A. Zaveri, A. K. Bertram and A. Laskin, Distinct Gas-Particle Partitioning and Viscosity Characteristics of Secondary Organic Aerosols Derived from α-Pinene versus Ocimene, ACS ES&T Air, 2, 9, 1916–1926, (2025). https://doi.org/10.1021/acsestair.5c00108