title: Transport of chlorinated dioxins and furans in soil columns: modeling pentachlorophenol pole-treating oil influence.
abstract: Column experiments were conducted to validate a screening model predicting the influence of pentachlorophenol (PCP) pole-treating oil on the vertical migration of its impurities, chlorinated dioxins and furans (PCDD/Fs). PCP pole-treating oil (15 mL d(-1)) and water (20 mL d(-1)) were added daily to the top of sand and organic soil columns during 35d. Column soil samples were analyzed to determine concentrations of hydrocarbons and PCDD/Fs at several depths in the columns (0-30cm) and their evolution in time (7, 14, 21 and 35d). The model predicted a significant vertical migration of PCDD/Fs due to the presence of oil as a free phase and PCDD/Fs were found in the different column layers at concentrations consistent with model predictions (same order of magnitude). Measured PCDD/Fs concentrations are in total disagreement with literature data and with model prediction in the absence of oil free phase, which implies PCDD/F properties alone cannot be used to predict their fate in the current context: the influence of PCP pole-treating oil must be accounted for to properly explain their migration.
authors.affiliation: NSERC Industrial Chair in Site Remediation and Management, Department of Chemical Engineering, École Polytechnique de Montréal, Montreal, Quebec, Canada. cecile.bulle@polymtl.ca
authors.forename: Cécile S M
authors.initials: CS
authors.lastname: Bulle
authors.forename: Réjean
authors.initials: R
authors.lastname: Samson
authors.forename: Louise
authors.initials: L
authors.lastname: Deschênes
mesh_terms: D004147:Dioxins / Q000737:chemistry*; D004784:Environmental Monitoring; D007700:Kinetics; D008956:Models, Chemical; D010416:Pentachlorophenol / Q000737:chemistry*; D010575:Pesticides / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D004147:Dioxins; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants; D010416:Pentachlorophenol