Alexander Laskin Research Group


November 29, 2022

Hats off to Dr. Morales on a successful PhD defense! You've done fantastic work throughout the years and have always held the lab together for us. You will be greatly missed, but we are excited to see the many great things that you accomplish in your future!

November 28, 2022

Way to go Dr. Tomlin on completing your defense! We are so proud of your hard work and contributions to our lab and know you will achieve great things in your future!

November 28, 2022

Steven has officially passed all five of his cumulative exams and will be moving on to his original proposal ('OP') candidacy exam next. Great work Steven!

November 16, 2022

Congratulations Dr. West on completing your defense! We commend your many years of hard work and dedication and we wish you great success in the next steps of your career.

November 9, 2022

Huge congratulations to Emily for passing her OP. Her time and effort paid-off and she is now a PhD candidate, great work!

November 1, 2022

Steven passed his second year seminar today, great work! You had an interesting topic and the audience greatly appreciated your 'chalk-talk' at the end with Dr. Simpson.

October 28, 2022

Excellent work Diego on becoming a PhD candidate today after presenting his OP on the use of SERS to quantify perchlorate in lettuce and soils, well done.

October 6, 2022

Congratulations to Ana Morales and team for publishing high-profile work in Nature! Their novel work shows that large quantities of environmental nanoplastics (EnvNPs) may be directly emitted into the atmosphere as steam-laden waste components discharged from a technology commonly used to repair sewer pipes in urban areas. Check out their work here.

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October 3, 2022

Our group attended the American Association for Aerosol Research (AAAR) Conference, where we presented 6 orals and 4 posters, collectively. Felipe was awarded for a top poster, and Brianna was awarded for a top oral presentation. Brianna also won 1st place in the particle arts competition.

October 3, 2022

Welcome to our visiting scholar, Feng Jiang, from Karlsruhe Institute of Technology (KIT), Germany, who will spend 3 months at our lab with the goal to further characterize his laboratory-generated Indole-SOA using UPLC-PDA-HRMS.


September 30, 2022

Chris, Kyla, and Steven presented at Turkey Run Analytical Conference tonight, and had unique opportunities to discuss research with the top analytical chemists across the midwest.

September 1, 2022

Our new grant from NOAA began today, we look forward to accomplishing some exciting work.

June 6, 2022

Congratulations to Jay on his publication titles: Chemical composition and morphological analysis of atmospheric particles from an intensive bonfire burning festival. Jay used atmospheric particles that were sampled in Rehovot, Israel during a national Lag Ba'Omer bonfire festival as a case study to investigate the physical and chemical transformations of mixed mineral dust and biomass burning aerosols. His paper was featured on the inside cover of the journal. Check out his work here.

Graphical abstract: Chemical composition and morphological analysis of atmospheric particles from an intensive bonfire burning festival

 June 3, 2022

Tune in to our oral and poster presentations June 5-9th at ASMS. See our presentation times below:

June 1, 2022

Congratulations Chris for receiving the Bilsland Dissertation Fellowship funded by the Graduate School. This fellowship provides support for PhD students completing their thesis.


May 23, 2022

Welcome to Bianca Aridjis-Olivos, our REU student from Texas! She will be working with us over the summer before returning to school for her senior year.

May 10, 2022

Chris published his paper titled: Molecular Investigation of the Multi-phase Photochemistry of Fe(III)-citrate in Aqueous Solution. This work presents an experimental study on the molecular photochemistry of an Fe–citrate model system, describing in detail the sequence of its photochemical reactions in the aqueous solution. His work can be viewed here.

Graphical abstract: Molecular investigation of the multi-phase photochemistry of Fe(iii)–citrate in aqueous solution

May 2, 2022

Yue defended his PhD thesis at Lanzhou University, based on the experimental work conducted in our lab during his 2 year stay as an international scholar. We are proud of all your great work Dr. Yue Zhou!

March 15, 2022

Congratulations to Yue for his publication in ES&T: Molecular Characterization of Water-Soluble Brown Carbon Chromophores in Snowpack from Northern Xinjiang, China. Check it out here.

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March 2, 2022

Congratulations to Kyla on her first-time first author publication in ES&T: Molecular Analysis of Secondary Brown Carbon Produced from the Photooxidation of Naphthalene. Check out her work here.

Abstract Image

February 21, 2022

Dr. Jianzhong Xu, a past international scholar from our group, has led a paper titled: Atmospheric Brown Carbon on the Tibetan Plateau: Regional Differences in Chemical Composition and Light Absorption Properties. Find it here.

February 2, 2022

Congratulations to Anusha and Dr. Laskin on publishing the cover story in the Journal of Mass Spectrometry. Check out their outstanding work titled: Quantitative analysis of polycyclic aromatic hydrocarbons using high-performance liquid chromatography-photodiode array-high-resolution mass spectrometric detection platform coupled to electrospray and atmospheric pressure photoionization sources. Find it here.



January 10, 2022

Our new visiting scholar, Pooja Chaudhary has just arrived from Indian Institute of Science Education and Research Mohali, SAS Nagar, in Punjab, India. We welcome her and look forward to spending the next 12 months working together.


December 20, 2021

Congratulations to Ana for winning the Student Research Competition at Pacifichem 2021 with her presentation titled: Discovery of Atmospheric Micro- and Nanoplastic Particles in Urban Emissions.

December 14, 2021

Our paper led by Jay Tomlin, titled: Impact of dry intrusion events on the composition and mixing state of particles during the winter Aerosol and Cloud Experiment in the Eastern North Atlantic (ACE-ENA) has just been published! Check out his work here.

December 10, 2021

Farewell to Dr. Anusha Hettiyadura, who has been our post-doc since the summer of 2018. You have been a strong leader in our group, and we wish you all the best all the best at your new position as a Senior Research Scientist at LabCorp drug development in Madison, WI.

November 29, 2021

Kudos to Felipe on passing his OP! His project "Field-Deployable Detection of Gamma Radiation from Nuclear Waste Contamination Using CdSe Quantum Dots" has advanced him to PhD candidacy!


October 28, 2021

We officially welcome our newest graduate students - Brianna Peterson and Steven Sharpe! We look forward to their future here in the Alex Laskin research lab.


September 29, 2021

Kyla, Jay, and Felipe spent the first half of this week at Washington University in St. Louis performing fuel burning experiments with Dr. Rajan Chakrabarty for one of our DOE projects.


September 29, 2021

Our group is excited about a new research opportunity enabled by DOE for our science project that will utilize integrated capabilities of the Atmospheric Radiation Measurement (ARM) user facility and Environmental Molecular Sciences Laboratory (EMSL).

September 24, 2021

Our group travels to Turkey Run State park for an annual conference on Analytical Chemistry organized by students from Midwest Universities. This year Chris West from our group co-lead conference organization and Emily Halpern was selected as an oral presenter in addition to 8 posters presented by other group members.


September 5, 2021

Yue Zhou, a visiting grad student from Lanzhou University, completed his two-year long fellowship work in our group and is about to take off back home! He did a monumental amount of work here and his project on the chemical characterization of organic components in snow samples revealed important environmental findings and insights for future work! We wish Yue bright future and we miss him already.


August 15, 2021

Our group is excited about a new research opportunity enabled by a DOE Atmospheric System Research (ASR) grant to investigate real-world chemistry of aerosol particles in field studies. Check it out here!

August 9, 2021

With help of our dear friend and relative @MishaLaskin, we created a group logo featuring AI-generated artwork background produced in response to a query of "Atmospheric Aerosol Chemistry".


August 3, 2021

Paper led by graduate student Maria Misovich is published here. An exciting finding is that prolonged photolysis of water soluble organics in aquatic systems leads to formation of oxygen-deprived colloidal particles.


August 1, 2021

Our new exciting research project to study composition and sources of environmental nanoplastics (EnvNP) in urban environment is now funded by NSF. The microscopy image below illustrates morphology and typical sizes of these peculiar EnvNP particles.


 June 18, 2021
Congrats to Kyla Siemens and Kevin Jankowski on receiving Arthur Kelly Teaching Award!

June 7, 2021
Congrats to Yue Zhou who led our recently published paper showing for the first time impact of Atmospheric Brown Carbon on the snow albedo in northern China! Check out his work here.

May 24, 2021
Our group welcomes Taylor Estock, an REU summer student who will join our research projects in the area of Atmospheric Brown Carbon chemistry.

April 28, 2021
Congratulations to our group member Emily Halpern for being elected as the Analytical Division representative in the Graduate Student Advisory Board (GSAB) for the 2021-2022 school year!

April 27, 2021
Congrats to Ali Reed who received Undergraduate Research Awards from the department of Chemistry.

April 1, 2021
Congratulations to our senior undergraduate student Jack Ryan who was accepted to grad school at UCI. Jack has done a great job working on several projects in the group! We are excited to see where the future takes him.

March 24, 2021
Check out EMSL/PNNL’s new highlight here! This focuses on aerosol chemistry research collaborations between EMSL, our research group and numerous national laboratories, academics, and industry researchers. In a sweeping look at studies published over the past five years, this highlight discusses projects investigating the chemistry and composition of atmospheric particles.

February 16, 2021
Congratulations to Chris West who was awarded a summer internship for the Naval Research Enterprise Internship Program (NREIP) at the Naval Air Warfar Center in China Lake, CA.

February 1, 2021
Our group is excited to pursue a new research opportunity in "Understanding Evolution of Atmospheric Brown Carbon." This work is possible due to an international NSF-BSF research grant. Read more about this exciting venture in the Purdue News!

January 27, 2021
Our new paper led by Anusha Hettiyadura reports on unrecognized ‘darkening-by-volatilization’ effects of atmospheric brown carbon! Check out her work here.

January 8, 2021
Fourth year Ana Morales' collaborative work with Dr. Paul Shepson on organic nitrates was published today in Atmospheric Chemistry and Physics. She reports her laboratory study of the OH-initiated oxidation of β-ocimene, which is released during the daytime from a variety of vegetation sources. Check out her work here.

January 1, 2021
Our group is excited about a new research opportunity enabled by a CBM-NSF research grant “Characterization of Chemical Constituents of Aerosolized Biomass-derived Liquids” in partnership with ExxonMobil, Inc.

November 2, 2020
Congratulations Jay on publishing a lead author paper in ACS Earth & Space Chemistry. Along with the help of group members Kevin and Felipe, his work investigates ambient aerosol over actively harvested agriculture fields via chemical imaging. Check out his work here.

September 14, 2020
Congratulations to our fourth year PhD student, Chris, for winning 2nd prize in the LatinXChemAnalytical category of the LatinXChem twitter conference. Well-deserved recognition and achievement!

View his poster here.

August 19, 2020
Congratulations to Jay on receiving the Emerson Kampen Departmental Fellowship for the academic year 2020-2021!

July 2, 2020
Congratulations to Chris who has published his first lead-author paper in ACS Earth & Space Chemistry. His work is the first study characterizing Brown Carbon aerosol formed in the combustion of ethane, one of the most basic hydrocarbon fuels. Check out his work here.

June 29, 2020
Follow us on our new twitter page @alaskinlab

May 28, 2020
Congratulations to Kyla who passed her OP exam and is now a PhD candidate!

March 9, 2020
Jay was interviewed on his work at Environmental Molecular Sciences Laboratory, a DOE national user facility. He performs offline analysis of atmospheric aerosols using the computer-controlled scanning electron microscope at ESML.

Watch Jay's interview here.

March 1, 2020
Graduate students Chris, Jay, Ana, Maria, Kevin, and Kyla will be attending Pittcon 2020, the largest Analytical Conference in the country. Each of us will be presenting posters about one of our own research projects.

January 16, 2020
Our paper led by Jianzhong Xu (visitor from Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences) is published in Journal of Geophysical Research - atmospheres. Our research findings underline differences in the chemical composition and light absorption properties of aerosols in the southern and northern Tibetan Plateau. doi: 10.1029/2019JD031226

November 10, 2019
We welcome the youngest addition to our group, Sahas, the handsome newborn baby boy of our Post Doc Anusha and her husband Sanjaya. Congratulations to Anusha and Sanjaya!

November 1, 2019
The group welcomes Felipe Rivera-Adorno - our newest graduate student from Puerto Rico who's passions led him to join the group to pursue research in aerosol chemistry!

November 19, 2018
Our paper led by Swarup China and Susannah Burrows (both from PNNL) is published in Nature Communications. Contrary to common assumption that sodium-containing atmospheric particles originate primarily from marine sources, our research shows that particles with very similar 'sea spray-like' composition and sizes are also abundantly emitted by tropical forests.

November 15, 2018
The group welcomes Kyla Siemens and Kevin Jankowski - two graduate students who joined the group to pursue research in the aerosol chemistry..! 

October 23, 2018
Alex Laskin is named William R. Wiley Research Fellow for his contributions to the area of aerosol molecular chemistry and to the success of the EMSL scientific user facility.

October 15, 2018
An ACS eBook "Multiphase Environmental Chemistry in the Atmosphere" edited by Sherri W. HuntAlexander LaskinSergey A. Nizkorodov is published. The book content is based on presentations given at the symposium with the same title held at the 2017 ACS Fall meeting. This book highlights new cross-disciplinary advances in aerosol chemistry critical for more accurate modeling of the atmospheric environment.

October 8, 2018
A paper by Peng Lin et al describing analytical approach for comprehensive molecular characterization of atmospheric brown carbon (BrC) is published in Analytical Chemistry. The paper reports on the methodology for detailed, molecular-specific analysis of BrC chrmophores in biomass burning organic aerosol. We now apply this method to investigate different BrC mixtures from field and laboratory studies with an ultimate goal to improve our understanding on the climate-relevant effects of atmospheric organic aerosols.

September 17, 2018
The group welcomes Wenjun Zhang -  a graduate student from China Agricultural University who received a scholarship from her home institute to join our group and study aerosol chemistry in a context of its health effects. 

July 2, 2018
The group welcomes Dr. Anusha Hettiyadura - a postdoctoral researcher with expertise in the HPLC-HRMS analysis of environmental samples!

June 11, 2018
The group welcomes Prof. Jianzhong Xu - a visiting scholar from Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences.! Prof. Xu came with a unique set of aerosol samples collected in Tibet and plans to investigate their molecular-level composition in collaboration with our group.

June 10, 2018
Dr. Peng Lin, our long-time group member, took a senior scientist job at California Air Resources Board and moved to sunny LA area. We wish him great success and best luck at the new position, and we miss him already!

Dr. Peng Lin