Graduate Research Highlights

June 2020: Grace Guardian

Grace Guardian.

Grace Guardian, 5th-year Ph.D. student in Prof. Aga's group


(*denotes equal contribution)

Guardian, M. G. E.; Boongaling, E. G.; Bernardo – Boongaling, V. R. R.; Gamonchuang, J.; Boontongto, T.; Burakham, R.; Arnnok, P.; Aga, D.S.; Prevalence of Per- and Polyfluoroalkyl Substances (PFASs) in Drinking and Source Water from Two Asian Countries. Chemosphere. 2020. 256:127115.

Ravi, B. G.*; Guardian, M. G. E.*; Dickman, R.; Wang, Z. Q., High-resolution tandem mass spectrometry dataset reveals fragmentation patterns of cardiac glycosides in leaves of the foxglove plants. Data Brief. 2020. 30:105464

Ravi, B. G.*; Guardian, M. G. E.*; Dickman, R.; Wang, Z. Q., Profiling and structural analysis of cardenolides in two species of Digitalis using liquid chromatography coupled with high-resolution mass spectrometry. J. Chromatogr. A. 2020. 1618:460903

Fulong, C. R. P.; Guardian, M. G. E.; Aga, D. S.; Cook, T. R., A Self-Assembled Iron(II) Metallacage as a Trap for Per- and Polyfluoroalkyl Substances in Water. Inorg. Chem. 2020. 59:6697 – 6708.

Khazaee, M.; Guardian, M. G. E.; Aga, D. S.; Ng, C. A., Impacts of Sex and Exposure Duration on Gene Expression in Zebrafish Following Perfluorooctane Sulfonate Exposure. Environ. Toxicol. Chem. 2020, 39 (2):437 - 449.

Guardian, M. G. E. and Aga, D. S., Mineralization and Biotransformation of Estrone in Simulated Poultry Litter and Cow Manure Runoff Water. J. Environ. Qual. 2019, 48:1120 - 1125.


My research focuses on the development of mass spectrometry based analytical methods than can facilitate identification, structural elucidation and trace quantification of micropollutants in environmental samples.

I enjoy being a graduate student because it allows me to do an in-depth research on environmental issues that I am passionate about. I also enjoy the flexibility to work on various analytical problems and the opportunity to collaborate with scientists in different fields.   

Outside of the lab, I enjoy traveling and outdoor activities as well as watching plays and musicals.


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