Murphy is a professor at the University of Toronto under the Department of Chemistry. Since starting as a faculty member in 2007, her research[4] has focused on understanding the effects of atmospheric pollutants on air quality and the Earth's climate. Her work entails development and application of new analytical techniques for use in measurement of trace components of the atmosphere.[5] This includes measurements made as both part of short-duration field intensives and longer-term monitoring efforts. Through the development and usage of long-term, precise and accurate observations with adequate geographic coverage and spatial resolution, Murphy and her group work to improve the process-level representation of chemical systems and biosphere-atmosphere exchange in earth systems models.[2]
From 2007 to 2016, she held a title as Tier II Canada Research Chair. Then, from 2015-2018, she was the Associate Chair of Graduate Studies.[6]
Murphy specializes her research in Atmospheric Chemistry, Biogeochemistry and Analytical Chemistry.[10] Within these, she focuses on measuring reactive nitrogen compounds from the field, in order to assess her understanding of the rates and mechanisms of chemical transformations in the environment. Advanced analytical techniques are required to interpret air quality, climate change, acid precipitation and ecosystem function.[2] Some of her most recent and well-known works are listed below:
Dimethyl Sulfide in the Summertime Arctic atmosphere: Measurements and Source Sensitivity Simulations, (2016), Atmospheric Chemistry and Physics[11]
An Atmospheric Constraint on the NO2 Dependence of Daytime Near-Surface Nitrous Acid (HONO), (2015), Atmospheric Chemical Society[12]
Experimental and Theoretical Understanding of the Gas Phase Oxidation of Atmospheric Amides with OH Radicals: Kinetics, Products, and Mechanisms, (2014), American Chemical Society[13]
Improved Characterization of Gas–Particle Partitioning for Per- and Polyfluoroalkyl Substances in the Atmosphere Using Annular Diffusion Denuder Samplers, (2012), American Chemical Society[14]
Long term changes in nitrogen oxides and volatile organic compounds in Toronto and the challenges facing local ozone control, (2009), Elsevier Ltd.[15]
^Mungall, E. L., Croft, B., Lizotte, M., Thomas, J. L., Murphy, J. G., Levasseur, M., Martin, R. V., Wentzell, J. J. B., Liggio, J., and Abbatt, J. P. D.: Dimethyl sulfide in the summertime Arctic atmosphere: measurements and source sensitivity simulations, Atmos. Chem. Phys., 16, 6665–6680, doi:10.5194/acp-16-6665-2016, 2016.
^Pusede, Sally E.; VandenBoer, Trevor C.; Murphy, Jennifer G.; Markovic, Milos Z.; Young, Cora J.; Veres, Patrick R.; Roberts, James M.; Washenfelder, Rebecca A.; Brown, Steven S. (2015-11-03). "An Atmospheric Constraint on the NO2 Dependence of Daytime Near-Surface Nitrous Acid (HONO)". Environmental Science & Technology. 49 (21): 12774–12781. Bibcode:2015EnST...4912774P. doi:10.1021/acs.est.5b02511. ISSN0013-936X. PMID26436410.
^Borduas, Nadine; da Silva, Gabriel; Murphy, Jennifer G.; Abbatt, Jonathan P. D. (2015-05-14). "Experimental and Theoretical Understanding of the Gas Phase Oxidation of Atmospheric Amides with OH Radicals: Kinetics, Products, and Mechanisms". The Journal of Physical Chemistry A. 119 (19): 4298–4308. Bibcode:2015JPCA..119.4298B. doi:10.1021/jp503759f. ISSN1089-5639. PMID25019427.
^Ahrens, Lutz; Harner, Tom; Shoeib, Mahiba; Lane, Douglas A.; Murphy, Jennifer G. (2012-07-03). "Improved Characterization of Gas–Particle Partitioning for Per- and Polyfluoroalkyl Substances in the Atmosphere Using Annular Diffusion Denuder Samplers". Environmental Science & Technology. 46 (13): 7199–7206. Bibcode:2012EnST...46.7199A. doi:10.1021/es300898s. ISSN0013-936X. PMID22606993.
^Geddes, Jeffrey A.; Murphy, Jennifer G.; Wang, Daniel K. (2009-07-01). "Long term changes in nitrogen oxides and volatile organic compounds in Toronto and the challenges facing local ozone control". Atmospheric Environment. 43 (21): 3407–3415. Bibcode:2009AtmEn..43.3407G. doi:10.1016/j.atmosenv.2009.03.053. ISSN1352-2310.