Goal #1: Identify fate and transport mechanisms in soil for the various estrogen chemicals (e.g., 17b-estradiol, estrone, and estriol). Use a variety of soils that represent a range of soil particle size distributions and organic matter content.
Objective

• Identify sorption affinity and sorption site availability using equilibrium batch experiments.
• Use kinetic sorption experiments to investigate the time dependent sorption mechanisms.
• Identify the dynamic process involved in the fate and transport of 17b-estradiol using miscible-displacement soil column experiments.

• Casey, F.X.M., J. Lee, and J. Simunek. 2005. Sorption, Mobility, and Transformation of Estrogenic Hormones in Natural Soil. J. Envrion. Qual. 34:1372–1379.
• Chun, S., Lee, J., Geyer, R., White, D.C. 2005. Comparison of three extraction methods for 17b-estradiol in sand, bentonite, and organic-rich silt loam. Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes 40 (5), pp. 731-740.
• Casey, F.X.M., G. L. Larsen, H. Hakk, and J. Simunek. 2004. Fate and Transport of Testosterone in Agriculturally Significant Soils. Environ. Sci. Technol. 38(3):790 –798.
• Casey, F.X.M, G.L. Larsen, H. Hakk, and J. Simunek. 2003. Fate and Transport of 17b-Estradiol in Soil-Water Systems. Environ. Sci. Technol. 37 (11): 2400 -2409.

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