The Field lab is part of the Hydrocarbon and Dispersant Chemistry Team of Ecosystem Impacts of Oil & Gas Inputs to the Gulf (ECOGIG-II). (http://ecogig.org/hydrocarbon-dispersantchemistry). The laboratory developed methods for the surfactant components of Corexit, the oil dispersant, used on the 2010 Gulf of Mexico oil spill. The methodology is now being applied to determine the fate of Corexit surfactant components in microcosms containing microbial consortia from shallow and deep Gulf water locations, marine sediments, and in marine snow. Publications: 1. Barsamian, A., Perkins, M, Field, J., and Blakemore, P. 2014. Regioselective Syntheses of [13C]4-Labelled Sodium 1-Carboxy-2-(2-ethylhexyloxycarbonyl)ethanesulfonate and Sodium 2-Carboxy-1-(2-ethylhexyloxycarbonyl)ethanesulfonate from [13C]4-Maleic Anhydride. 2014. Journal of Labelled Compounds and Radiopharmaceuticals, 57, 625625. 2. Place, B., Perkins, M. Sinclair, E., and Field, J.A. 2014. Trace Analysis of Anionic and Nonionic Surfactants from Oil Dispersants in Gulf of Mexico Seawater Using Large Volume Injection Liquid Chromatography with Tandem Mass Spectrometry. Special issue in Deep Sea Research. DOI: 10.1016/j.dsr2.2014.01.015. 3. Place, B., Anderson, B., Mekebri, A., Furlong, E., Gray, J., Tjeerdema, R., Field, J. 2010. A role for analytical chemistry in advancing our understanding of the occurrence, fate, and effects of Corexit oil dispersants. Environmental Science and Technology, 44, 6016-6018. The Field lab will also be working in collaboration with Dr. Mary Beth Leigh (http://faculty.iab.uaf.edu/mary_beth_leigh), a microbiologist with the Institute of Arctic Biology at the University of Alaska, Fairbanks (on a project funded (2015-2017) by the Coastal Marine Institute titled, “Fate and persistence of oil spill response chemicals in arctic seawater.“ Collaborators Drs. David Sedlak and Lisa Alvarez-Cohen, Dept. of Civil Engineering, UC Berkeley Technical Objectives It is our goal to fully delineate the fluorochemicals that persist in AFFF-contaminated groundwater, sediment, and soil at military sites where fire-training activities occurred and to evaluate their impact on priority pollutant transport and bioremediation. Publications 1. Barzen-Hansen, K., Field, J.A. In Press. Discovery and implications of C2 and C3 perfluoroalkyl sulfonates in aqueous film forming foams (AFFF) and groundwater. Environmental Science & Technology Letters, DOI: 10.1021/acs.estlett.5b00049 2. McGuire, M.E., Schaefer, C., Richards, T., Backe, W.J., Field, J.A., Houtz, E., Sedlak, D.S., Guelfo, J.L., Wunsch, A., Higgins, C.P. 2014. Evidence of Remediation-Induced Alteration of Subsurface Poly- and Perfluoroalkyl Substance Distribution at a Former Firefighter Training Area. Environmental Science & Technology, 48, 6644-6652 3. Houtz, E., Higgins, C., Field, J. and Sedlak, D. 2013. Persistence of perfluoroalkyl acid precursors in AFFF-impacted groundwater and soil. Environmental Science and Technology, 47, 9342-9349 4. Backe, W.J., Christensen, K.E., and Field, J.A. 2013. Newly-identified cationic, anionic, and zwitterionic fluorinated chemicals in groundwater at US military bases by large volume injection HPLC – MS/MS. Environmental Science and Technology, 47, 5226-5234. 5. Place, B., Field, JA. 2012. Identification of novel fluorochemicals in aqueous film-forming foams (AFFF) used by the US military. Environmental Science and Technology, 46, 71207127