Comparaison en laboratoire de 5 échantillonneurs intégratifs pour l'échantillonnage de polychlorobiphenyls indicateurs et dioxin-like dans les eaux

Autor: Jacquet, R., Miège, C., Smedes, F., Tixier, C., Tronczynski, J., Togola, Anne, Berho, Catherine, Valor, I., Llorca, J., Barillon, B., Marchand, P., Coquery, M.
Přispěvatelé: Milieux aquatiques, écologie et pollutions (UR MALY), Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), aucun, Deltares, RBE-BE-LBCO, Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER), Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), LABAQUA, CIRSEE, Suez Environnement, Laboratoire d'étude des Résidus et Contaminants dans les Aliments (LABERCA), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS), Centre International de Recherche Sur l'Eau et l'Environnement [Suez] (CIRSEE), SUEZ ENVIRONNEMENT (FRANCE)
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Chemosphere
Chemosphere, Elsevier, 2014, 98, pp.18-27. ⟨10.1016/j.chemosphere.2013.09.011⟩
ISSN: 0045-6535
Popis: International audience; This study aimed at evaluating and comparing five integrative samplers for the monitoring of indicator and dioxin-like polychlorinated biphenyls (PCBs) in water: semi-permeable membrane device (SPMD), silicone rubber, low-density polyethylene (LDPE) strip, Chemcatcher and a continuous-flow integrative sampler (CFIS). These samplers were spiked with performance reference compounds (PRCs) and then simultaneously exposed under constant agitation and temperature in a 200 L stainless steel tank for periods ranging from one day to three months. A constant PCB concentration of about 1 ngL1 was achieved by immersing a large amount of silicone rubber sheets ("dosing sheets") spiked with the target PCBs. The uptake of PCBs in the five samplers showed overall good repeatability and their accumulation was linear with time. The samplers SPMD, silicone rubber and LDPE strip were the most promising in terms of achieving low limits of quantification. Time-weighted average (TWA) concentrations of PCBs in water were estimated from uptake of PCBs using the sampling rates calculated from the release of PRCs. Except for Chemcatcher, a good agreement was found between the different samplers and TWA concentrations ranged between 0.4 and 2.8 times the nominal water concentration. Finally, the influence of calculation methods (sampler-water partition coefficients, selected PRCs, models) on final TWA concentrations was studied.
Databáze: OpenAIRE
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