Polyethylene passive samplers to determine sediment–pore water distribution coefficients of persistent organic pollutants in five heavily contaminated dredged sediments
| Type | Article | ||||||||||||
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| Date | 2014-02 | ||||||||||||
| Language | English | ||||||||||||
| Author(s) | Charrasse Benoit1, Tixier Celine2, Hennebert Pierre1, Doumenq Pierre3 | ||||||||||||
| Affiliation(s) | 1 : ARDEVIE, Inst Natl EnviRonnem Ind & RiSques INERIS, F-13545 Aix En Provence 04, France. 2 : IFREMER, RBE BE LBCO, F-44311 Nantes 3, France. 3 : Aix Marseille Univ, CNRS, UMR CNRS 6263, Lab Chim Environnem,FRE 3416, F-13545 Aix En Provence 4, France. |
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| Source | Science Of The Total Environment (0048-9697) (Elsevier Science Bv), 2014-02 , Vol. 472 , P. 1172-1178 | ||||||||||||
| DOI | 10.1016/j.scitotenv.2013.10.125 | ||||||||||||
| WOS© Times Cited | 13 | ||||||||||||
| Keyword(s) | Passive sampling, Pore water concentration, PAHs, PCBs, Dredged sediments, Model comparison | ||||||||||||
| Abstract | Pore concentration and partition coefficients of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) were determined in sediments from five distinct contaminated sites in France (marine harbour, rivers canals and highway sedimentation tank). The assessment of the risk caused by such micropollutants requires, in most cases, the measurement of their availability. To assess this availability, low density polyethylene (LDPE) membrane samplers were exposed to these sediments under constant and low-level agitation over a period of 46 days. Freely dissolved pore water contaminant concentrations were estimated from the concentration at equilibrium in the LDPE membrane. The depletion of contaminants in the sediments was monitored by the use of performance reference compounds (PRCs). Marked differences in freely dissolved PAH and PCB concentrations and resulting sediment–pore water partition coefficients between these five sediments were observed. Data set was tested onto different empirical and mechanistic models. As final findings, triple domain sorption (a total organic carbon, black carbon and oil phase model) could model PCB data successfully whereas the best fitting for PAH partitioning was obtained by Raoult's Law model. | ||||||||||||
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