title: Bioavailability of classical and novel flame retardants: Effect of fullerene presence.
abstract: To understand the behavior of some emerging flame retardants (FRs) in the environment, a nonexhaustive extraction using Tenax was applied to study their behavior in aquatic ecosystems. Desorption of 8 polybrominated diphenyl ethers (PBDEs), 8 methoxylated PBDEs, 3 emerging brominated FRs and 6 halogenated norbornenes from sediments spiked in the laboratory was studied. Results showed that emerging FRs have a similar bioavailability than that of legacy FRs, already banned. In addition, some parameters such as sediment total organic carbon (TOC), aging or nanomaterial (NMs) presence in the sediment were modified in order to study their effects on the bioavailability of FRs. Bioavailability increases with a diminution of sediment TOC, while diminishes with an increase of aging. The study of effect of NM presence was performed at three different pH (acidic, neutral and basic), and for the three scenarios, FR bioavailability decreased with NM presence. The retention of pollutants in the sediment seems to be favoured by NM presence, minimizing their impact on living organisms.
authors.affiliation: Water and Soil Quality Research Group, Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain.
authors.forename: Giselle
authors.initials: G
authors.lastname: Santín
authors.affiliation: Water and Soil Quality Research Group, Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain. Electronic address: eeeqam@cid.csic.es.
authors.forename: Ethel
authors.initials: E
authors.lastname: Eljarrat
authors.affiliation: Water and Soil Quality Research Group, Dep. of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research (ICRA), H(2)O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003 Girona, Spain.
authors.forename: Damià
authors.initials: D
authors.lastname: Barceló
mesh_terms: D001682:Biological Availability; D004784:Environmental Monitoring / Q000379:methods*; D005411:Flame Retardants / Q000032:analysis* / Q000494:pharmacology*; D037741:Fullerenes / Q000032:analysis* / Q000493:pharmacokinetics; D019015:Geologic Sediments / Q000737:chemistry*; D055768:Halogenated Diphenyl Ethers / Q000032:analysis* / Q000493:pharmacokinetics; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000493:pharmacokinetics
chemical_list: D005411:Flame Retardants; D037741:Fullerenes; D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical
keywords: Bioavailability; Flame retardants; Nanomaterials; Tenax extraction