United States Geological Survey (USGS)
Kansas Water Science Center
Organic Geochemistry Research Laboratory (ORGL)
I am an environmental analytical research chemist and environmental engineer in the Organic Geochemistry Research Laboratory. The primary focus of my research is to investigate the occurrence, fate, effects, transport, and treatment of anthropogenic and naturally occurring organic contaminants in the environment, drinking water, wastewater, and confined animal feeding operations. My work and interests include analytical methods development, laboratory and field scale degradation and sorption studies, and treatment studies on new or understudied organic compounds that may adversely impact the water quality of our nation’s water resources. These compounds include pesticides, pharmaceuticals (including antibiotics), algal toxins and their metabolites and degradates.
Selected Relevant Publications:
Rosen, B.H., Loftin, K.A., Smith, C.E., Lane, R.F., Keydel, S.P., 2010, Microphotographs of cyanobacteria documenting the effects of various cell-lysis techniques: U.S. Geological Survey Open-File Report, 2010-1289, 203p.
Graham, J.L., Loftin, K.A., Meyer, M.T., Ziegler, A.C. 2010, Cyanotoxin mixtures and taste-and-odor compounds in cyanobacterial blooms from the Midwestern United States, Environmental Science and Technology, 44, 7361-7368.
Drake, J.L., Carpenter, E.J., Cousins, M., Nelson, K.L., Guido-Zarate, A., Loftin, K. 2010. Effects of light and nutrients on seasonal phytoplankton succession in a temperate eutrophic coastal lagoon, Hydrobiologia, 654, 177-192.
U.S. Environmental Protection Agency (USEPA). 2009. National Lakes Assessment: A Collaborative Survey of the Nation’s Lakes. EPA 841-R-09-001. U.S. Environmental Protection Agency, Office of Water and Office of Research and Development, Washington, D.C., April 2010. Contributor for Chapter 4. Suitability for Recreation: Algal Toxins.
Graham, J.L., Loftin, K.A., Kamman, N. 2009, Algal toxins: Monitoring recreational freshwaters (PDF), Lakeline, summer 2009, 18-24.
Loftin, K.A., Meyer, M.T., Rubio, F., Kamp, L., Humphries, E., Whereat, E. 2008, Comparison of two cell lysis procedures for recovery of microcystins in water samples from Silver Lake in Dover, Delaware with microcystin producing cyanobacterial accumulations (PDF), U.S. Geological Survey Open-File Rep. 2008-1341, 9 p.
Graham, J.L., Loftin, K.A., Ziegler, A.C., Meyer, M.T. 2008, Guidelines for design and sampling for cyanobacterial toxin and taste-and-odor studies in lakes and reservoirs, U.S. Geological Survey Scientific Investigations Report 2008-5038, 39 p.