P168 Chronic Biotic Ligand Models for algae and daphnids: species- and metal-specific considerations. Heijerick, Dagobert*,1,2, De Schamphelaere, Karel1, Janssen, Colin1, 1 Ghent University, Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent, Belgium2 EURAS, Ghent-Zwijnaarde, Belgium

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P169 Distribution of Bioavailablility of Tin in Fish and Water at a Portland Harbor, Oregon Superfund Site. Anderson, Kim1, Krissanakriangkrai, Oraphin*,1, Johnson, Eugene1, 1 Oregon State University, Corvallis, Oregon, USA

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P170 Tenax extraction to measure bioavailability of organic contaminants for soil and sediment inhabiting organisms. ten Hulscher, Theodora*,1, Postma, Jaap2, den Besten, Piet1, Stroomberg, Gerard2, Belfroid, Angelique3, Wegener, Jan Willem3, Faber, Jack4, van der Pol, Joost4, Hendriks, Jan1, van Noort, Paul, 1 RIZA, Lelystad, the Netherlands2 AquaSense, Amsterdam, the Netherlands3 Institute for Environmental Studies, VU, Amsterdam, the Netherlands4 Alterra, Wageningen, the Netherlands

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P171 PhyavQL: a computer model for estimating metal bioavailability and translocation within plants. Cypas, Paula*,1, Hale, Beverley1, Evans, Les1, 1 University of Guelph, Guelph, ON, CANADA

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P172 Impact of episodic stormwater events on the bioavailability of polycyclic aromatic hydrocarbos (PAHs) in the Portland Harbor, Oregon. Visalli, Solyssa*,1,2,4, Johnson, Eugene2,4, Loper, Bobby2,4, Anderson, Kim2,3,4, 1 Bioresouce Research, Corvallis, OR, USA2 Department of Environmental and Molecular Toxicology, Corvallis, OR4 Oregon State University, Corvallis, OR3 Food Safety and Environmental Stewardship, Corvallis, OR, USA

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P173 Distribution Profiles of PCBs and Organochlorine Pesticides and the Impact of Seasonal Timing on Contaminant Bioavailability in the Lower Willamette, Oregon. Anderson, Kim1, Sethajintanin, Doolalai*,1, Johnson, Eugene1, 1 Oregon State University, Corvallis, Oregon, USA

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P174 Assessment of PAH Bioavailability in soil to Eisenia fetida using Solid Phase Microextraction Technology. Tost, Brian*,1, Lanno, Roman1, Booth, Lynn1, Booth, Phil1, Basta, Nick2, 1 Ohio State University, Columbus, Ohio, USA2 Oklahoma State University, Stillwater, Oklahoma, USA

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P175 Bioavailability and toxicity of contaminants to Corophium volutator: field and laboratory spiked sediments. Hellou, Jocelyne*,1,2, Cheeseman, Kerry3, Desnoyers, Elaine2, Gronlund, Anette3, Johnston, Dawn, Leonard, Jim1, Robertson, Sarah3, Steller, Sean1, 1 Marine Chemistry Section, Marine Environmental Sciences Division, Bedford Institute of Oceanography, Dartmouth, Nova Scotia, Canada2 Chemistry Department, Dalhousie University, Halifax, Nova Scotia, Canada3 Biology Department, Dalhousie University, Halifax, Nova Scotia, Canada

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P176 Toxicokinetics of glyphosate and 2,4-D butoxyethyl ester in early-life stage Xenopus laevis. Edginton, Andrea*,1, Stephenson, Gerry1, Boermans, Herman1, 1 Univeristy of Guelph, Guelph, Ontario, Canada

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P177 Use of the BLM to determine a WER for copper. Linton, Tyler1, McIntyre, Dennis*,1, Premo, Bette2, Alexander, Michael3, 1 Great Lakes Environmental Center, Columbus, Ohio, USA2 White Water Associates, Inc., Amasa, Michigan, USA3 Michigan Department of Environmental Quality, Lansing, Michigan, USA

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P178 Determination of a conditional binding constant for copper to wheat roots for biotic ligand modelling. Hale, Beverly1, Boyle, David*,1, 1 University of Guelph, Guelph, ON, Canada

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P180 An Evaluation of Biological Accumulation of Metals into Fish Species with Different Feeding Habits For Use in a Human Health Risk Assessment. Awata, Hiroshi*,1, McCarthy, Chris1, Hilscher, Larry2, 1 CH2M HILL, Houston, Texas, USA2 CH2M HILL, Austin, Texas

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P181 The Use of Tissue BAF Models for Various Plant Types in Risk Assessment. McCarthy, Christopher*,1, Chartrand, Andrew1, Hilscher, Larry2, 1 CH2M HILL, Houston, TX, USA2 CH2M HILL, Austin, TX

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P182 Effects of natural dissolved organic matter on silver speciation and silver uptake by a green alga. Porcher, Céline*,1, Campbell, Peter1, 1 Institut national de la Recherche scientifique - ETE, Québec city, QC, Canada

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P183 Mobilization processes of soil-bound PAHs in the gastrointestinal tract. Van de Wiele, Tom*,1, Verstraete, Willy1, Siciliano, Steven1, 1 Laboratory Microbial Ecology and Technology, Ghent University, Ghent, Oost-Vlaanderen, Belgium

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P184 Metal Extractability and Bioavailability to Plants of Copper-Rich Industrial Wastes/Products. Ginocchio, Rosanna*,1, Silva, Yasna2, Sepúlveda, Nancy2, Bustamante, Elena2, Torres, Juan Carlos2, Rodríguez, Patricio2, 1 Departamento de Ecología, Pontificia Universidad Católica de Chile, Santiago, Chile2 Centro de Investigaciones Mineras y Metalúrgicas, Santiago, Chile

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P185 Accumulation of cadmium from lettuce in rabbits: soluble-salt amended vs plant-incorporated diets. Chan, Debbie*,1, Fry, Nick1, Gasior, Anna1, Waisberg, Michael1, Black, William2, Hale, Beverley1, 1 Department of Land Resource Science, University of Guelph, Guelph, ON, Canada2 Department of Biomedical Sciences, University of Guelph, Guelph, ON, Canada

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P186 In vitro studies of human gastrointestinal mobilisation of food-borne PCBs. Soyibo, Adeola*,1, Beck, Angus1, 1 Imperial College, University of London, United Kingdom

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P188 The influence of colloids on the toxicity of cadmium and fluoranthene to freshwater invertebrates. Irvine, Cameron*,1, Burton, G.1, Greenberg, Marc1, 1 Institute for Environmental Quality, Wright State University, Dayton, Ohio, USA

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