289 Symposium--From Sorption to Bioavailability

Oral Session
S11 Soils & Environmental Quality A contaminant in soil or sediment is partitioned among multiple phases, including the solid phase, dissolved organic matter, and water. Such phase partitioning regulates the ultimate biological endpoints or processes (e.g., biodegradation, bioaccumulation, ecotoxicity) by influencing the chemical’s bioavailability. At the center of debate is the bioavailability of sorbed contaminants, and the contributing variables (e.g., black carbon, aging). This symposium serves as an opportunity for a holistic discussion of contaminant sorption and bioavailability, and the interplaying mechanisms. We welcome presentations covering both inorganic (e.g., heavy metals) and organic contaminants, and both mechanistic and applied investigations.


Environmental Quality, Soil Chemistry, Soil Biology & Biochemistry
Tuesday, October 18, 2011: 8:00 AM-12:15 PM
Henry Gonzalez Convention Center, Room 210B

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Rai Kookana and Jay (Jianying) Gan
Rai Kookana and Jay (Jianying) Gan
8:05 AM
What Controls the Bioavailability of Contaminants In Soil?.
Joseph J. Pignatello, Connecticut Agricultural Experiment Station
8:30 AM
Preferential Sites In Soil Organic Matter Probed with Stable Nitroxyl Free Radicals.
Charisma Lattao, Connecticut Agricultural Experiment Station; Yuan Li, Old Dominion University; Joseph Pignatello, Connecticut Agric. Expt. Stn.; Jingdong Mao, Old Dominion University; Mark Chappell, US Army Corps of Engineers
9:20 AM
Adsorption of Organic Compounds by Engineered Carbon Nanoparticles.
Kun Yang, University of Massachusetts; Baoshan Xing, University of Massachusetts
9:45 AM
10:00 AM
Availability of Sorbed Organic Contaminants to Microorganisms.
Yucheng Feng, Auburn University; Stephen A. Boyd, Michigan State University
10:25 AM
Linking Soil Sorption to Plant Uptake of the Systemic Insecticide Imidacloprid In Viticulture.
Clinton Williams, USDA-ARS; Steve Castle, USDA-ARS; Shad Nelson, Texas A&M University-Kingsville; Nilima Prabhaker, University of California, Riverside
11:15 AM
Bioavailability of Colloidal Organic Carbon Bound Estrogen.
Katrin B. Chambers, North Dakota State University; Francis M. Casey, North Dakota State University; Heldur Hakk, USDA-ARS; Nancy W. Shappell, USDA-ARS; Thomas M. DeSutter, North Dakota State University; Eakalak khan, North Dakota State University
11:40 AM
Biomimetic Methods to Evaluate Bioavailability.
Jay (Jianying) Gan, University of California; Lizzy Cui, University of California
12:00 PM
12:15 PM