University of California, Riverside

Environmental Sciences

Jay Gan

Jay Gan

Jay Gan Photo

Professor of Environmental Chemistry

  • Office: 210 Science Laboratories I
  • Phone: (951) 827-2712

Academic Degrees:

  • Ph.D., Zhejiang University, China, 1988


  • Elected Fellow, American Society of Agronomy (ASA), 2006
  • Elected Fellow, American Association for the Advancement of Science (AAAS), 2008
  • Elected Fellow, Soil Science Society of America (SSSA), 2010

Editorial Boards:

  • Associate Editor, Environmental Pollution (active)
  • Editorial Board, Journal of Agricultural & Food Chemistry (active)


  • Environmental fate and risk assessment of pesticides, POPs, PPCPs, and PBDEs.
  • Processes of organic contaminants in ecosystems, including biotic and abiotic degradation, adsorption, leaching and runoff.
  • Bioavailability, aquatic bioaccumulation, and ecotoxicity of hydrophobic contaminants.
  • Detoxification and remediation of organic contaminants.
  • Method development for trace contaminant analysis.
  • Evaluation and development of best management practices.

Research Group:

  • Postdoctoral Associates
    • Sherry (Xiaoqin) Wu - Postdoctoral Research Associate
    • Charles (Chunyang) Liao - Postdoctoral Research Associate
  • Graduate Students
    • Edmond Sanganyado (Ph.D., Environmental Toxicology Program)
    • Jaben Richards (Ph.D., Environmental Science Program)
    • Allison Taylor (Ph.D., Environmental Science Program)
    • Douglas Wolf (Ph.D., Environmental Toxicology Program)
    • Stacia Dudley ((Ph.D., Environmental Toxicology Program)
  • Visiting Scientists and Students
    • John (Jianqian) Sun, Zhejiang University of Technology, Hangzhou, China
    • Youwei Hong, Chinese Academy of Science, Xiamen, China
    • Xiaojun Chen, Yangzhou University, Yangzhou, China
    • Rachel (Qiuguo) Fu, Zhejiang University, Hangzhou, China
    • Cindy (Jingyu) Tian, Sun Yet-sun University, Guangzhou, China
    • Angela (Jiaying) Xue, China Agricultural University, Beijing, China
  • Undergraduate Student Researchers
    • Stephanie Jiron
    • Jesse Mendoza
  • Recent Graduates
    • Susie (Sujie) Qin (Ph.D., 2006) - Postdoctoral Scientist, Standford University, Palo Alto, CA
    • Robert Budd (Ph.D., 2009) - Scientist, California Department of Pesticide Regulation, Sacramento, CA
    • Wesley Hunter (Ph.D., 2009) - Staff Fellow, Center for Veterinary Medicine, U.S. Food and Drug Administration, Maryland
    • Mae Nillos (Ph.D., 2009) - Assistant Professor, University of the Philippines
    • Weiying Jiang (Ph.D., 2012) - Environmental Scientist, California Department of Pesticide Regulation, Sacramento, CA
    • Zhijiang Lu (Ph.D. 2014) – Postdoctoral Fellow, Massachusetts Institute of Technology, Boston, MA
    • Echo (Fang) Jia (Ph.D. 2014) – Postdoctoral Scientist, Bayer Crop Science, Research Triangle Park, NC 
    • Laurel Dodgen (Ph.D., 2014)

Representative Publications:

  • Edited Books
    • Gan, J., P. Zhu, S.D. Aust, and A.T. Lemley. Pesticide Decontamination and Detoxification. American Chemical Society Symposium Series 863, American Chemical Society: Washington, DC, 2003.
    • Gan, J., F. Spurlock, P. Hendley, and D. Weston. Synthetic Pyrethroids: Occurrence and Effects in Aquatic Environments. American Chemical Society Symposium Series 991, American Chemical Society: Washington, DC, 2003.
    • Goh, K., B. Bret, T. Potter, and J. Gan. Pesticide Mitigation Strategies for Surface Water Quality. American Chemical Society Symposium Series 1075, American Chemical Society: Washington, DC, 2011.
    • Garrison, A.W., J. Gan, and W.P. Liu. Chiral Pesticides: Stereoselectivity and its Consequences. American Chemical Society Symposium Series 1085, American Chemical Society: Washington, D.C. 2012.
  • Journal Articles (selected from 220+)
    • Gan, J., Q. Wang, S.R. Yates, W.C. Koskinen and W.A. Jury. 2002. Dechlorination of chloroacetanilide herbicides by thiosulfate salts. PNAS (USA) 99: 5189-5194.
    • Liu, W.P., J. Gan, D. Schlenk and W.A. Jury. 2005. Enantioselectivity in environmental safety of current chiral insecticides. PNAS (USA) 103: 701-706.
    • Xu, Y.P., F. Spurlock, Z.J. Wang, and J. Gan. 2007. Comparison of five methods for measuring sediment toxicity of hydrophobic contaminants. Environ. Sci. Technol. 41: 8394-8399.
    • Budd, R., A. O’Geen, K. Goh, S. Bondarenko, and J. Gan. 2009. Efficacy of constructed wetlands in pesticide removal from tailwaters in the Central Valley, California. Environ. Sci. Technol. 43: 2925-2930.
    • Bondarenko, S., and J. Gan. 2009. Simultaneous determination of free and total concentrations of hydrophobic compounds. Environ. Sci. Technol. 43: 3772-3777.
    • Yang, Y., W. Hunter, S. Tao, and J. Gan. 2009. Microbial availability of different forms of phenanthrene in soils. Environ. Sci. Technol. 43: 1852-1857.
    • Lin, K.D., W.P. Liu, and J. Gan. 2009. Oxidative removal of bisphenol-A with manganese dioxide: Kinetics, products, and pathways. Environ. Sci. Technol. 43: 3860-3864.
    • Cui, X.Y., W. Hunter, Y. Yang, Y.X. Chen, and J. Gan. 2010. Bioavailability of sorbed phenanthrene and permethrin in sediments to Chironomus tentans. Aquatic Toxicol. 98: 83-90
    • Delgao-Moreno, L., L. Wu, and J. Gan. 2010. Effect of dissolved organic carbon on sorption of pyrethroids to sediments. Environ. Sci. Technol. 44: 8473-8478.
    • Jiang, W., J. Gan, and D. Haver. 2011. Sorption and desorption of pyrethroid insecticide permethrin on concrete. Environ. Sci. Technol. 45: 602-607.
    • Wang, W., L. Moreno, Q.F. Ye, and J. Gan. 2011. Improved measurements of partition coefficients for polybrominated diphenyl ethers (PBDEs). Environ. Sci. Technol. 45: 1521-1527.
    • Jiang, W.Y., D. Haver, M. Rust, and J. Gan. 2012. Runoff of pyrethroid insecticides from concrete surfaces following simulated and natural rainfalls. Water Research 46: 645-652.
    • Gan, J., S. Bondarenko, L. Oki, D. Haver, and J.X. Li. 2012. Occurrence of fipronil and its biologically active derivatives in urban residential runoff. Environ. Sci. Technol. 46: 1489-1495.
    • Jiang, W.Y., and J. Gan. 2012. Importance of fine particles in pesticide runoff from concrete surfaces and its prediction. Environ. Sci. Technol. 46: 6028-6034.
    • Wu, X.Q., J. Conkle, and J. Gan. 2012. Multi-residue determination of pharmaceutical and personal care products in vegetables. J. Chromatography A.1254: 78-86.
    • Delgado-Moreno, L., and J. Gan. 2013. A stable isotope dilution method for measuring bioavailability of organic contaminants. Environmental Pollution 176: 171-177.
    • Cui, X.Y., P. Mayer, and J. Gan. 2013. Methods to assess bioavailability of hydrophobic organic contaminants: Principles, operations, and limitations. Environ. Pollut. 172: 223-234.
    • Li, J.Y., L. Dodgen, Q.F. Ye, and J. Gan. 2013. Degradation kinetics and metabolites of carbamazepine in soil. Environmental Science & Technology 47: 3678-3684.
    • Cui, X.Y., and J. Gan. 2013. Solid-phase microextraction (SPME) with stable isotope calibration for measuring bioavailability of hydrophobic organic contaminants. Environmental Science & Technology 47: 9833-9840.
    • Wu, X.Q., F. Ernst, and J. Gan. 2013. Comparative uptake and translocation of pharmaceutical and personal care products (PPCPs) by common vegetables. Environmental International 60: 15-22.
    • Lin, K.D., C. Yan, and J. Gan.  2014. Production of hydroxylated polybrominated diphenyl ethers (OH-PBDEs) from bromophenols by manganese dioxide. Environmental Science & Technology 48: 263-271.
    • Lu, Z.J., and J. Gan. 2014. Isomer-specific biodegradation of nonylphenol in river sediments. Environmental Science & Technology 48: 1008-1014.
    • Jia, F., L.J. Bao, J. Crago, D. Schlenk, and J. Gan. 2014. Use of isotope dilution method (IDM) to predict bioavailability of organic pollutants in historically contaminated sediments.  Environmental Science & Technology 48: 7966-7973.

Courses Taught:

  • ENSC 2 – Introduction to Environmental Science
  • ENSC 3 – Contemporary Issues in Environmental Science (team taught)
  • ENSC 127 - Fate and Transport of Contaminants in Soil (upper division)
  • ENTX 200 – Fate and Transport of Chemicals in the Environment (graduate; co-instructor)

Graduate Program Affiliations and Research Focus Areas:

More Information

General Campus Information

University of California, Riverside
900 University Ave.
Riverside, CA 92521
Tel: (951) 827-1012

Department Information

Environmental Sciences
Geology 2258

Tel: (951) 827-5116
Fax: (951) 827-3993