Gregory Vladimir Korshin

Biography

Professor Gregory Korshin obtained his master’s degree in physics from Kazan State University and his PhD in Physical Chemistry from Kazan State Technological University, both in Kazan, Russia. He began his career at the University of Washington in 1991. His research has been focused on the fundamental chemistry and cycling of arsenic and antimony in engineered systems, advanced reduction processes, characterization of natural organic matter, formation of disinfection by-products, corrosion in drinking water, and degradation of trace-level organic contaminants. Prof. Korshin has published over a hundred seventy refereed publications. His research has been supported by the National Science Foundation, Water Research Foundation, Water ReUse Foundation, U.S. Environmental Protection Agency and other organizations. Prof. Korshin is a member of the editorial board of the journal Water Research. He has held invited positions in universities in Australia, China, France and Italy.

Education

• Ph.D., Kirov State Technological University, Kazan, Russia, 1984
• M.S., Kazan State University, Kazan, Russia, 1978
• B.S., Kazan State University, Kazan, Russia, 1976

Previous appointments

• Peking University (Visiting Professor)
• University of South Australia (Visiting Professor)
• University of Paris VII Diderot (Visiting Professor)
• University of Catania (Visiting Professor)

Research Statement

Main thrusts of Gregory Korshin's research are on microscopic-level examination of complex environmental reactions, their modeling and development of new methods to treat drinking water, wastewater, landfill leachate and gas condensates. The treatment methods recently developed in Prof. Korshin’s group are based on advanced reduction processes and electrochemically controlled processes. His research has also resulted in the development of differential optical spectroscopy that is especially useful to examine effects of halogenation and advanced oxidation on contaminants in drinking water and wastewater. Prof. Korshin’s research also addresses the mobility of heavy metals in water systems and resource recovery in landfills. 

Current projects

Removal of arsenic and co-occuring contaminants from landfill leachate and landfill gas condensate

Cycling of Arsenic and Antimony in Renewable Natural Gas Operations

Effects of rising seawater levels on the integrity of subsurface infrastructure

Select publications

1. Baccini L., Vagliasindi F., Korshin G.V., Roccaro P. (2026). Simultaneous Control of Microbial Inactivation and DBPs Formation Using Differential Absorbance as a Surrogate Performance Parameter. Journal of Environment Chemical Engineering, 14 (3): 122666 https://doi.org/10.1016/j.jece.2026.122666.
2. Yang Deng, Hanzhe Wang, Lei Zheng, Zhongli Liu, Gregory Korshin and Mingquan Yan (2025) A universal model to predict DOC removal by coagulation based on UV-Visible absorption spectrum. Water Research, 286: 124160, http://dx.doi.org/10.1016/j.watres.2025.124160.
3. Mingquan Yan, Zhongli Liu, Shansheng Mo, Gregory Korshin (2025) Unveiling ongoing biogeochemical dynamics of CDOM from surface to deep ocean. Nature Communications, 16: 5202, https://doi.org/10.1038/s41467-025-60510-0.
4. Mingquan Yan, Shansheng Mo, Zhongli Liu, Gregory Korshin (2025) Absorptivity is Inversely Proportional to the Spectral Slope in the Absorbance spectra of CDOM. Environmental Science & Technology, 59: 7156-7164, https://doi.org/10.1021/acs.est.5c01019
5. Chenyang Zhang, Po-An Chen, Gregory V. Korshin, Andrey M. Kuznetsov, Alexey Masliy and Mingquan Yan (2025) Differential Absorbance and EXAFS Examination of pH Effects on the Inner Coordination Shell of Copper Complexes with Humic Substances. Chemosphere, 370: 143949, https://doi.org/10.1016/j.chemosphere.2024.143949
6. Po-An Chen, H. Paul Wang, An.M.Kuznetsov, A.N.Masliy, Siqi Liu and G.V.Korshin (2023) XANES/EXAFS and Quantum Chemical Study of the Speciation of Arsenic in the Condensate Formed in Landfill Gas Processing: Evidence of the Dominance of As-S Species. Journal of Hazardous Materials, 445, 130522, https://doi.org/10.1016/j.jhazmat.2022.130522.
7. Liu, Siqi, Jaeshin Kim, G.V.Korshin (2022) Comparison of the Formation of By-Products Produced by the Oxidation of Natural Organic Matter in Ozonation and Electrochemical Treatment of Surface Water. Chemosphere, 307: 135664, https://doi.org/10.1016/j.chemosphere.2022.135664.
8. Siqi Liu, Andrey M. Kuznetsov, Weiqing Han, Alexei N. Masliy, Gregory V. Korshin (2022). Removal of Dimethylarsinic Acid (DMA) in the Fe/C system: Roles of Fe(II) Release, DMA/Fe(II) and DMA/Fe(III) Complexation. Water Research, 118093, https://doi.org/10.1016/j.watres.2022.118093
9. Liu, Siqi, Wenqing Han, G.V.Korshin (2020). Effects of Fulvic Acids on the Electrochemical Reactions and Mass Transfer Properties of Organic Cation Toluidine Blue: Results of Measurements by the Method of Rotating Ring-Disc Electrode. Water Research, 181: 116151
10. Ruffino, Barbara; Gregory V. Korshin; Mariachiara Zanetti (2020) Use of Spectroscopic Indicators for the Prediction of Bromate Generation in Ozonated Wastewater Containing Variable Concentrations of Bromide. Water Research, 182: 116009
11. Li, Wei, Baoling Lyu, Jiping Li, Meng Zhang, Yinlong Zhang, Pingping Li, Jiangang Han, G.V.Korshin (2020) Photodegradation of roxithromycin in the presence of dissolved organic matter: characterization of the degradation products and toxicity evaluation. Science of the Total Environment, 733: 139348
12. Li, Manjie, Zhaowei Liu, Yongcan Chen, G.V.Korshin, (2020) Effects of alkalinity, chloride and sulfate on the stability and metal release from corrosion scales in condition of stagnation and flow. Water Research, 175: 115675
13. Mahamuni, Gaurav; Rutherford, Jay; Davis, Justin; Molnar, Eric; Posner, Jonathan; Seto, Edmund; Korshin, Gregory; Novosselov, Igor (2020) Excitation-Emission Matrix Spectroscopy for Analysis of Chemical Composition of Combustion Generated Particulate Matter. Environmental Science & Technology, 54 (13): 8198-8209
14. Li, Manjie, Zhaowei Liu, Yongcan Chen, G.V.Korshin, (2020) Effects of varying temperatures and alkalinities on the corrosion and heavy metal release from low-lead galvanized steel. Environmental Science - Water Research & Technology, 27: 2412-2422
15. Zhang, Chenyang; Chen, Bingya; Korshin, Gregory; Kuznetsov, Andrey; Roccaro, Paolo; Yan, Mingquan; Ni, Jinren (2020) Comparison of the Yields of Mono-, Di- and Tri-Chlorinated HAAs and THMs in Chlorination and Chloramination Based on Experimental and Quantum-Chemical Data. Water Research, 169, 115100
16. Liu, Haizhou, G.V.Korshin (2019) Controlling the Colloidal Stability of PbO2 and Associated Lead Release in Drinking Water Distribution Systems. Environmental Science: Water Research and Treatment, 5, 1262-1269
17. Xie, Xiaoyun, M.Q.Yan, H.G.Guo, G.V.Korshin (2019) Interactions between Natural Organic Matter (NOM) and Organic Cations: Effects of NOM Charges on the Binding of Toluidine Blue. Chemosphere, 236: 124272

Honors & awards

• Top Reviewer of AWWA Water Science Journal, January 2020
• Fulbright U.S./Italy Scholarship award, March 2014
• Distinguished Foreign Expert Award of Peking University/Chinese Ministry of Education, August 2013
• Australian International Center of Excellence in Water Resource Management Visiting Scholar Award, September 2007, 2011
• Fresh Ideas Best poster presentation at Annual Conference of American Water Works Association, San Diego, CA June 2009
• Institut de Physique du Globe de Paris Invited Professor Award, 2008.
• Environmental Molecular Science Laboratory (EMSL) Fellowship, Pacific Northwest National Laboratory, 2003