title: Influence of hydrological parameters on organohalogenated micropollutant (polybrominated diphenyl ethers and polychlorinated biphenyls) behaviour in the Seine (France).
abstract: The temporal dynamics of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) were investigated in a heavily urbanized river (Seine River, Paris, France) from November 2009 to May 2010. Pollutant concentrations were in the range of 0.2 to 3.8 ng l(-1) (median 1.1) and 0.4 to 3.6 ng l(-1) (median 1.1) for ∑ tri-deca BDEs and ∑ 7PCBs, respectively. In addition, for both PBDEs and PCBs, the partitioning between the particulate and dissolved phases was investigated. Due to their low water solubility, PBDEs were mainly (>70%) bound to particles. In contrast, only 54% of ∑ 7PCBs occurred in the particulate phase, and their partitioning was influenced by the degree of chlorination. During the sampling period, PBDE/PCB fluxes were quite similar and ranged from 3 to 128 and from 6 to 125 g day(-1), respectively. The annual mass flow of PBDEs and PCBs was estimated to 10 kg for both. Contrary to PCBs and BDE-209, the temporal evolution of ∑ tri-hepta BDEs was related to particulate organic matter content, which is controlled by river flow variations. This suggests that they exhibit different sources or behavior in the Seine River.
authors.affiliation: khaoula.tlili@upmc.fr
authors.forename: Khawla
authors.initials: K
authors.lastname: Tlili
authors.forename: Pierre
authors.initials: P
authors.lastname: Labadie
authors.forename: Fabrice
authors.initials: F
authors.lastname: Alliot
authors.forename: Catherine
authors.initials: C
authors.lastname: Bourges
authors.forename: Annie
authors.initials: A
authors.lastname: Desportes
authors.forename: Marc
authors.initials: M
authors.lastname: Chevreuil
mesh_terms: D004784:Environmental Monitoring / Q000379:methods; D055868:Floods; D005602:France; D055768:Halogenated Diphenyl Ethers / Q000032:analysis* / Q000737:chemistry; D011078:Polychlorinated Biphenyls / Q000032:analysis* / Q000737:chemistry; D045483:Rivers; D012995:Solubility; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical; C086401:pentabromodiphenyl ether; D011078:Polychlorinated Biphenyls