Group Members

Jon Abbatt (PI)

Jon obtained his BSc from the UofT Chemistry Department in 1984 and spent 16 years in the United States (Harvard PhD, MIT Post Doc, University of Chicago Assistant/Associate Professor) before returning to UofT. His research interests are in atmospheric and environmental chemistry, with a focus on particulate, cloud, and indoor chemistry. Specific research topics include: rates and mechanisms of multiphase chemistry in outdoor and indoor environments; the role of particles in promoting the formation of both liquid water and ice  clouds; field measurements of VOCs and aerosol composition especially in remote regions such as the Arctic; aerosol chemistry related to  health effects.


Jon has been on the editorial boards of Atmospheric Measurement Techniques, Scientific Reports, Energy and Environmental Science, and Journal of Geophysical Research – Atmospheres. He is a member of the NASA/JPL Data Evaluation Panel for Atmosphere Modeling and was co-chair of the 2011 Gordon Conference on Atmospheric Chemistry.  He has served on the scientific steering committee of the International Global Atmospheric Chemistry project (2011-2014) and on the NSERC Grant Selection Committee for physical and analytical chemistry. He has been given the Canadian Institute for Chemistry (CIC) Environmental Research Award (2012), was made a Fellow of the American Geophysical Union (2013), was elected to the Royal Society of Canada (2014) and was given a Killam Research Fellowship (2015).   He is the principal investigator of a large NSERC-funded climate-clouds-aerosols research network, NETCARE (Network on Climate and Aerosols: Addressing Key Uncertainties in Remote Canadian Environments).   

Jenna Ditto

Jenna completed her Ph.D. at Yale University in 2020 with Dr. Drew Gentner. Her graduate research focused on developing and applying non-targeted liquid chromatography and tandem mass spectrometry tools for the detailed chemical characterization of functionalized gas- and particle-phase organic compounds. Jenna joined the Abbatt group in September 2020. She is currently studying the chemical transformations of cannabis smoke on indoor surfaces, and impacts on indoor air quality. 

Jia Qi (Jackie) Han

Jackie completed her B.Sc. at the University of Toronto: Mississauga in June 2019, where she studied forensic chemistry. In her undergraduate studies, she spent some time in developing methods of THC quantification in blood using the GC-MS. She then joined the Abbatt group in September 2019. Her current research interests are in the realm of the analysis of the change in indoor air chemistry after cooking episodes using the PTR-MS.

Carolyn Liu-Kang

Carolyn completed her B.Sc. in chemistry from Université de Montréal. During her undergraduate studies, she did some work involving the identification of a sediment sample using Raman spectroscopy, as well as the characterization of pesticides using HPLC. She joined the Abbatt group for her PhD graduate studies in September 2019 where her research will focus on the formation of nitrogenated BrC (brown carbon) compounds from biomass burning sources.

Qifan Liu

Qifan completed his Ph.D. at the Institute of Chemistry, Chinese Academy of Sciences with Prof. Maofa Ge, where he studied acid-catalyzed heterogeneous reactions of VOCs. Prior to joining the Abbatt group, he worked as a NSERC postdoctoral fellow at Environment and Climate Change Canada with Dr. John Liggio, investigating the atmospheric transformations and health effects of emerging contaminants such as organophosphate flame retardants (OPFRs) and engineered nanoparticles (ENPs). He joined the Abbatt group as a postdoctoral fellow in June 2020. His current research focuses on VOCs emissions from indoor surfaces. 

Stephanie Schneider

Stephanie completed her B.Sc. at the University of Alberta in chemistry in June 2017. During her undergraduate studies, she worked with Dr. Sarah Styler to quantify the reactive oxygen species produced photochemically from both road dust and mineral dust. It was this project that got her interested in studying atmospheric chemistry, and she joined the Abbatt group in September 2017 for her PhD. Her current work focuses on the quantification of the organic compounds volatilizing from the sea-surface microlayer, and how those compounds interact with common oxidants in the atmosphere. 

Chen Wang

Chen completed her B.Sc and M.Sc in Environmental Science at Nankai University and Peking University in 2012. She studied organic contaminants (PBDEs, PAHs, and pesticides) in the air in northern China during her masters. In 2016, Chen obtained her PhD in Environmental Chemistry at University of Toronto with Prof. Frank Wania. Her PhD research has focused on phase partitioning during secondary organic aerosol (SOA) formation. She has measured the influence of salt effect on aqueous phase partitioning and developed models to predict SOA formation. Chen joined the Abbatt group as a postdoctoral fellow in April 2017 to study secondary organic aerosol formation from cigarette smoking in indoor environment.  

Yutong (Maggie) Wang

Yutong received her H.B.Sc. in environmental chemistry from University of Toronto in June of 2020. During her undergraduate studies, she briefly worked on the quantification of isocyanate ion’s photo-oxidation rate using relative rate kinetics. Her undergraduate thesis involved using Ion Chromatography for isocyanate concentration determination. Yutong started her PhD in the Abbatt group in September 2020, where her research focuses on brown carbon and factors that may impact its optical properties. 

Kristen Yeh

Kristen received her B.Sc. in forensic science from Trent University in May of 2020. During her undergraduate studies, she briefly worked with Giardia intestinalis to investigate the localization of proteins during in vitro encystation. Her undergraduate thesis used MALDI FT-ICR-MSI to examine changes to fingerprint residues after implementing a cleaning process. Kristen started her PhD in the Abbatt group in September 2020, where her research focuses on heterogenous surface interactions of third-hand cannabis smoke indoors.

Jie Yu

Jie obtained her H.B.Sc. Degree in Chemistry at University of Toronto in April 2019. Her undergraduate research with Dr. Abbatt focused on heterogeneous chlorination of reduced nitrogen species using ATR-FTIR and DART-MS. She joined the Abbatt group again in September 2019 to pursue a PhD in Environmental Chemistry, with research focus on VOC partitioning in indoor surface reservoirs.

Zilin Zhou

 Zilin completed his B.Sc. in chemistry at the University of Ottawa in April 2017. His undergraduate research at the A.E. Lalonde AMS laboratory at uOttawa focused on the development of new analytical techniques for radium, plutonium and polonium measurements in environmental samples utilizing accelerator mass spectrometry (AMS). He joined the Abbatt group in summer 2017 for his PhD. His current and future research includes indoor air studies on the formation of Criegee biradicals resulting from the heterogeneous oxidation of unsaturated compounds (e.g. cooking oil) with ozone, with primary focuses on the kinetics and products. New analytical techniques for measuring complex triglycerides and oxygenated products using LC-MS will be developed in this project.

Past Group Members