Alexander Laskin Research Group


The PI

Alexander Laskin

Professor of Analytical Chemistry
Ph.D. Hebrew University of Jerusalem, 1998
BRWN 5131B
(765) 494-5243

Bio and CV (PDF)

Post Docs

Anusha Hettiyadura

Postdoctoral Associate


I am from Sri-Lanka. I obtained my B.Sc. (major - Chemistry) from University of Kelaniya, Sri-Lanka in November 2011. I came for higher studies to United States in 2013. I earned my Ph.D in Chemistry from The University of Iowa in May 2018. I joined Laskin research group at Purdue University as a post-doctoral researcher in July 2018. My research interests include development and application of liquid chromatography and mass spectrometric methods to identify and quantify atmospherically relevant organic aerosols.

Graduate Students

Kevin Jankowski

Graduate Student (expected graduation 2023)


I am from Frederick, Maryland. I graduated with a B.S. in Biochemistry from Mount Saint Mary's University in 2018. During my time there I participated in research using a GC-MS to analyze the vapor headspace of multiple substances such as hops and methyl salicylate. I have interned at AstraZeneca working in their quality control department. My research is focused on the identification and quantification of atmospheric particles using methods of spectromicroscopy.

Maria Misovich

Graduate Student (expected graduation 2022)


I am from Holland, Michigan. I got my bachelor's degree in chemistry at Michigan State University. While at MSU, I participated in research involving electrodialysis of salt solutions using polymer-coated membranes. I also participated in a summer REU at Southern Illinois University that involved electrodeposition of supercapacitor materials. I joined Dr. Laskin's group in fall 2017. My project involves analysis of iron-organic complexes by photolysis, UV-visible spectroscopy, high performance liquid chromatography, and mass spectrometry. It has applications in atmospheric aerosol research.


Ana Morales

Graduate Student (expected graduation 2022)
(co-advised with Prof. P. Shepson)


Ana is from Severna Park, Maryland and received her B.S. in Chemistry from Towson University in Baltimore, Maryland in May 2017. Prior to beginning her studies at Purdue University, Ana briefly worked as a lab and field technician at the Smithsonian Environmental Research Center in Edgewater, Maryland. Ana's research involves conducting experiments using an atmospheric smog chamber to investigate the characteristic behaviors of monoterpenes in the presence of NOx.

Felipe Rivera-Adorno

Graduate Student (expected graduation 2024)


Felipe is from Bayamon, Puerto Rico and received his B.Sc. in Chemistry from the University of Puerto Rico, Rio Piedras campus in May 2019. As a student in UPR he worked in the Atmospheric Chemistry and Aerosol Research laboratory, where he studied the impact of backup power generators emissions on air quality during the aftermath of Hurricane Maria. He now pursues a PhD in Analytical Chemistry from Purdue University, where he joined Dr. Alexander Laskin’s group in November 2019. Felipe will be working on the application of spectromicroscopy techniques (SEM and STXM) to study physical properties (i.e. viscosity and diffusivity) of atmospheric aerosols, and analyze its relationship with their chemical composition.

Kyla Siemens

Graduate Student (expected graduation 2023)


Kyla is from Winnipeg, MB, Canada, received her BSc. from Jacksonville University, FL, with a major in Chemistry and minors in Applied Mathematics and Business Management. The bulk of her undergraduate research, supervised by Dr. Anthony Ouellette, focused on the purification, concentration, and characterization of microcystins - a hepatotoxin found in algal blooms from the St. John’s River. Kyla also spent a summer synthesizing and characterizing glycopeptides with Dr. Helene Perreault at the University of Manitoba, Canada. As of August 2018 Kyla began pursuing a PhD in Analytical Chemistry at Purdue University, where she joined the Alex Laskin lab group to study atmospheric chemistry of aerosols.

Jay Tomlin

Graduate Student (expected graduation 2022)
(co-advised with Prof. P. Shepson)


Jay was born and raised in Quezon City, Philippines and immigrated to the United States in 2010 where he began his path in the field of Chemistry with the help of his peers and mentors. He received his B.S. in Chemistry and minor in Physics from Rowan University in Glassboro, New Jersey in May of 2017. He continues his academic career at Purdue University as a PhD student in Analytical Chemistry and joined two different atmospheric chemistry groups at Purdue. His project involves a collaboration between Paul Shepson and Alexander Laskin. Currently, he is working on two different projects:

  1. Measurements flux of greenhouse gas exchange from local agricultures around Indianapolis using Paul Shepson's instrument rigged Beechcraft BE76 Duchess aircraft also known as the Airborne Laboratory for Atmospheric Research (ALAR),
  2. Investigating organic coated dust particles using complementary chemical imaging and molecular characterization techniques such SEM/TEM and STXM to better understand the chemistry between the particle interface.

Christopher West

Graduate Student (expected graduation 2022)


Christopher is from Queens, NY. Christopher graduated with a B.S. in Chemistry with a concentration in Biochemistry from Methodist University in 2016. Christopher joined A. Laskin's group in November 2017 to pursue an interest in aerosol chemistry and applied mass spectrometry. Christopher is currently investigating metal-organic complexes applied to environmental/atmospheric systems utilizing high-resolution mass spectrometry (HRMS), ion-mobility spectrometry (IMS), and time-resolved UV-Visible spectroscopy measurements.


Yue Zhou

Visiting Scholar from Lanzhou University, Lanzhou, China


I am from Zhejiang, China. I am a PhD candidate in College of Atmospheric Sciences, Lanzhou University, majoring in Atmospheric Physics and Environment. I joined Dr. A. Laskin's group in Purdue University in September, 2019. My current research is focused on the brown carbon chromophores in seasonal snow.

Undergraduate Students

Andrew Darmody


Hometown: Oakville, MO
High School: Oakville Senior High School
Grade: Freshman
Intended major: B.S. Aeronautical and Astronautical Engineering (BSAAE); expected to
graduate in 2023
Fun fact: I have a fake front tooth.
Purdue involvement:
Engineering Projects In Community Service (EPICS)
Purdue Space Program, Treasurer
High School Involvement:
Boy Scouts of America, Eagle Scout

Matthew Graber


I am from Valparaiso, Indiana. I graduated from Valparaiso High School in 2018. I am a 2nd year undergrad majoring in Atmospheric Science. Spring 2020 is my first semester of doing research. My research interests are a bit broad at this point, and I look forward to narrowing that down a bit throughout the semester. I am intrigued by how different atmospheric aerosols can have an impact on the earth’s climate.

Valeria Garcia


Valeria is from Pleasanton, California. She is a sophomore at Purdue University studying Planetary Sciences and Atmospheric Science within the Earth, Atmospheric, and Planetary Sciences (EAPS) Department. Interested in learning more about the chemistry of aerosols, she joined Dr. A. Laskin’s group in March 2019, assisting in researching the chemical composition of brown carbon aerosols through analyzing UVVisible spectroscopy and mass spectrometry data. During her free time, Valeria likes to read science fiction novels and stargaze using her personal telescopes.

Alison Renee


Alison is from Indianapolis, Indiana and currently is a freshman at Purdue after attending Herron High school. She came to the Laskin group for her interests in environmental chemistry and research opportunities. Currently she works with Ana Morales on her work about the hydrolysis of Brown Carbon and enjoys baking French macarons and swimming in her free time.

Jack Ryan


I grew up in Fishers, Indiana and graduated from Fishers High school before coming to Purdue. I am currently a junior, studying chemistry and minoring in math. My research interests are mainly related to air pollution and aerosols and their relation to the ocean climate system. I enjoy listening to classic and folk rock music, I love hiking and the outdoors, and played men’s volleyball in high school.

Matthew Varas


I was born in Detroit Michigan, moved to Zionsville, Indiana for high school and am currently in my Junior year of my undergraduate studies. I am interested in environmental and inorganic research and joined Alex Laskin's group this spring 2020. My hobbies are reading a lot of books and playing soccer, which I have been doing for my whole life.

Purdue Alumni

Dr. Jianzhong Xu

Visiting Scholar from State Key Laboratory of Cryospheric Sciences
Northwest Institute of Eco-Environment and Resources
Chinese Academy of Sciences, Lanzhou


I am from China and work for Northwest Institute of Eco-Environment Resources, Chinese Academy of Sciences from 2008 after receiving my Ph.D degree there. My research is mainly focused on aerosol chemistry and snow records for environment and climate. I joined Dr. A. Laskin's group in Purdue University in June, 2018. My current work is to get information about brown carbon in aerosol samples collected from Tibetan Plateau, characterize their light absorption properties and molecular composition.

Wenjun Zhang

Visiting Scholar from China Agricultural University, Beijing


I am a PhD student in Department of Chemistry, China Agricultural University, studying environmental analytical chemistry. I joined Dr. A. Laskin's group in Purdue University in September, 2018. My current work is focused on the health effects of atmospheric aerosols.


Dr. Daniel Veghte (postdoc 2016 – 2018 at PNNL), presently staff scientist and manager of the SEM facility at Ohio State University, Columbus, OH.

Dr. Swarup China (postdoc 2015 – 2018 at PNNL), presently Staff Scientist at Pacific Northwest National Laboratory, Richland, WA

Dr. Peng Lin (postdoc 2014 – 2018 at PNNL/Purdue), presently Research Scientist at California Air Resources Board (CARB), El Monte.

Dr. Bingbing Wang, (postdoc 2012-2014 at PNNL), presently Professor at Xiamen University, China

Dr. Tran Nguyen (grad student 2008-2012 from UCI, co-advised with Prof. S. Nizkorodov), presently Assistant Professor at University of California, Davis

Dr. Adam Bateman (grad student 2007-2011 from UCI, co-advised with Prof. S. Nizkorodov), presently Scientist at Lam Research Corporation, Inc.

Dr. Jeremy Cain (grad student 2007-2011 from USC, co-advised with Prof. Hai Wang), presently Research Scientist at the University of Dayton Research Institute, Ohio

Dr. Patrick J. Roach (postdoc 2009-2010, co-advised with Dr. J. Laskin at PNNL), presently Research Scientist at Thermo Fisher Scientific Inc., California

Dr. Xin Yang (postdoc 2007 at PNNL), presently Professor at Fudan University, Shanghai, China.

Dr. Yong Liu (postdoc 2005-2008 at PNNL), presently Associate Professor at University of Colorado, Denver.

Dr. Yury Desyaterik (postdoc 2005-2008 at PNNL), presently Research Staff at University of North Carolina, Chapel Hill.