Transport of chlorinated dioxins and furans in soil columns: Modeling pentachlorophenol pole-treating oil influence

被引：9
作者：
Bulle, Cecile S. M. [1 ]
Samson, Rejean [1 ]
Deschenes, Louise [1 ]
机构：
[1] Ecole Polytech Montreal, Dept Chem Engn, NSERC Ind Chair Site Remediat & Management, Montreal, PQ H3C 3A7, Canada
来源：
CHEMOSPHERE | 2011年 / 83卷 / 02期
关键词：
Dioxin; Furan; Pentachlorophenol; Wood preservative; Soil column; POLYCHLORINATED AROMATIC-COMPOUNDS; WOOD-PRESERVING OIL; SCREENING MODEL; P-DIOXINS; 2,3,7,8-TETRACHLORODIBENZO-PARA-DIOXIN; DIBENZOFURANS; CONTAMINATION; FATE;
D O I：
10.1016/j.chemosphere.2011.01.015
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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 35 d. Column soil samples were analyzed to determine concentrations of hydrocarbons and PCDD/Fs at several depths in the columns (0-30 cm) and their evolution in time (7, 14, 21 and 35 d). 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. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：117 / 123
页数：7
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