PMID- 33736204 OWN - NLM STAT- MEDLINE DCOM- 20210322 LR - 20210322 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 271 DP - 2021 May TI - Temporal trends of legacy and novel brominated flame retardants in sediments along the Rhone River corridor in France. PG - 129889 LID - S0045-6535(21)00358-1 [pii] LID - 10.1016/j.chemosphere.2021.129889 [doi] AB - Brominated flame retardants (BFRs) are anthropogenic compounds that are ubiquitous in most manufactured goods. Few legacy BFRs have been recognised as persistent organic pollutants (POPs) and have been prohibited since the 2000s. However, most BFRs continue to be used despite growing concerns regarding their toxicity; they are often referred to as novel BFRs (nBFRs). While environmental contamination due to chlorinated POPs has been extensively investigated, the levels and spatiotemporal trends of BFRs are comparatively understudied. This study aims to reconstruct the temporal trends of both legacy and novel BFRs at the scale of a river corridor. To this end, sediment cores were sampled from backwater areas in four reaches along the Rhone River. Age-depth models were established for each of them. Polychlorinated biphenyls (PCBs), legacy BFRs (polybrominated diphenyl ethers - PBDEs, polybrominated biphenyls - PBBs and hexabromocyclododecane - HBCDDs) and seven nBFRs were quantified. Starting from the 1970s, a decreasing contamination trend was observed for PCBs. Temporal trends for legacy BFRs revealed that they reached peak concentrations from the mid-1970s to the mid-2000s, and stable concentrations by the mid-2010s. Additionally, individual concentrations of nBFRs were two to four orders of magnitude lower than those of legacy BFRs. Their temporal trends revealed that they appeared in the environment in the 1970s and 1980s. The concentrations of most of these nBFRs have not decreased in recent years. Thus, there is a need to comprehend the sources, contamination load, repartition in the environment, and toxicity of nBFRs before their concentrations reach hazardous levels. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Vauclin, Sophia AU - Vauclin S AD - Univ Lyon, Universite Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023, LEHNA, F-69518, Vaulx-en-Velin, France. Electronic address: sophia.vauclin@developpement-durable.gouv.fr. FAU - Mourier, Brice AU - Mourier B AD - Univ Lyon, Universite Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023, LEHNA, F-69518, Vaulx-en-Velin, France. FAU - Dendievel, Andre-Marie AU - Dendievel AM AD - Univ Lyon, Universite Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023, LEHNA, F-69518, Vaulx-en-Velin, France. FAU - Marchand, Philippe AU - Marchand P AD - ONIRIS, INRAE, LABERCA Route de Gachet-Site de la Chantrerie-CS 50707, Nantes, F-44307, France. FAU - Venisseau, Anais AU - Venisseau A AD - ONIRIS, INRAE, LABERCA Route de Gachet-Site de la Chantrerie-CS 50707, Nantes, F-44307, France. FAU - Morereau, Amandine AU - Morereau A AD - Institut de Radioprotection et de Surete Nucleaire (IRSN), PSE-ENV/SRTE/LRTA, BP 3, 13115, Saint-Paul-lez-Durance, France. FAU - Lepage, Hugo AU - Lepage H AD - Institut de Radioprotection et de Surete Nucleaire (IRSN), PSE-ENV/SRTE/LRTA, BP 3, 13115, Saint-Paul-lez-Durance, France. FAU - Eyrolle, Frederique AU - Eyrolle F AD - Institut de Radioprotection et de Surete Nucleaire (IRSN), PSE-ENV/SRTE/LRTA, BP 3, 13115, Saint-Paul-lez-Durance, France. FAU - Winiarski, Thierry AU - Winiarski T AD - Univ Lyon, Universite Claude Bernard Lyon 1, CNRS, ENTPE, UMR 5023, LEHNA, F-69518, Vaulx-en-Velin, France. LA - eng PT - Journal Article DEP - 20210208 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Flame Retardants) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Hydrocarbons, Brominated) SB - IM MH - Environmental Monitoring MH - *Flame Retardants/analysis MH - France MH - Halogenated Diphenyl Ethers/analysis MH - *Hydrocarbons, Brominated/analysis MH - Rivers OTO - NOTNLM OT - Brominated flame retardants OT - Contamination trend OT - Polychlorinated biphenyls OT - Rhone River OT - Sediment core COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/03/20 06:00 MHDA- 2021/03/23 06:00 CRDT- 2021/03/19 01:02 PHST- 2020/10/21 00:00 [received] PHST- 2021/01/30 00:00 [revised] PHST- 2021/02/02 00:00 [accepted] PHST- 2021/03/19 01:02 [entrez] PHST- 2021/03/20 06:00 [pubmed] PHST- 2021/03/23 06:00 [medline] AID - S0045-6535(21)00358-1 [pii] AID - 10.1016/j.chemosphere.2021.129889 [doi] PST - ppublish SO - Chemosphere. 2021 May;271:129889. doi: 10.1016/j.chemosphere.2021.129889. Epub 2021 Feb 8.