Metabolomic profiles of the endangered St. Lawrence Estuary beluga population and associations with organohalogen contaminants

Simond, Antoine E.; Houde, Magali; Lesage, Véronique; Michaud, Robert; Verreault, Jonathan

doi:10.1016/j.scitotenv.2020.137204

Cited by 22 publications

(13 citation statements)

References 66 publications

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“…The latter easily accumulates in the food chain and can affect the health of the surrounding environment and human survival. It is thus inimical to the concepts of environmental protection and sustainable development [ 47 , 48 , 49 ]. Therefore, many researchers are committed to identifying new environmentally friendly non-halogen flame retardants.…”

Section: Classification Of Flame-retardant Polymer Materialsmentioning

confidence: 99%

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

et al. 2021

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Against the background of people’s increasing awareness of personal safety and property safety, the flame retardancy (FR) of materials has increasingly become the focus of attention in the field of construction engineering. A variety of materials have been developed in research and production in this field. Polymers have many advantages, such as their light weight, low water absorption, high flexibility, good chemical corrosion resistance, high specific strength, high specific modulus and low thermal conductivity, and are often applied to the field of construction engineering. However, the FR of unmodified polymer is not ideal, and new methods to make it more flame retardant are needed to enhance the FR. This article primarily introduces the flame-retardant mechanism of fire retardancy. It summarizes the preparation of polymer flame-retardant materials by adding different flame-retardant agents, and the application and research progress related to polymer flame-retardant materials in construction engineering.

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Section: Classification Of Flame-retardant Polymer Materialsmentioning

confidence: 99%

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

et al. 2021

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“…The population of ∼900 beluga whales residing in the St. Lawrence Estuary (SLE; Canada) was listed as endangered in 2014 due to their population decline with no apparent recovery, and environmental contaminant exposure has been suggested to be partly responsible for the lack of recovery of this population . Indeed, POPs such as polychlorinated biphenyls (PCBs), organochlorine (OC) pesticides, and polybrominated diphenyl ethers (PBDEs) have been reported in SLE beluga whales at some of the highest blubber concentrations among wildlife species worldwide. − The high POPs concentrations in blubber have been found to be related to altered lipid profiles in beluga whales . The SLE beluga whales represent an ideal sentinel for investigating temporal trends of bioaccumulative POPs and potential POP candidates including PFASs.…”

Section: Introductionmentioning

confidence: 99%

Suspect and Nontarget Screening Revealed Class-Specific Temporal Trends (2000–2017) of Poly- and Perfluoroalkyl Substances in St. Lawrence Beluga Whales

Barrett

Houde

et al. 2021

Environ. Sci. Technol.

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The global use of >3000 per-and polyfluoroalkyl substances (PFASs) has given rise to chemical regulatory action. However, limited information exists regarding current and historical emissions for the majority of PFASs under currently implemented regulations. This study employed suspect and nontarget screening to examine the temporal trends of legacy and unregulated PFASs in liver of the endangered beluga whale (Delphinapterus leucas) population from the St. Lawrence Estuary in Canada collected from 2000 to 2017. A suite of 54 PFASs were tentatively identified, and were grouped into nine structurally distinct classes. Single-hydrogenated perfluoro carboxylic acids (H-PFCAs), single-hydrogenated sulfonamides (H-Sulfonamides), as well as other select sulfonamides were detected for the first time in wildlife. Greater concentrations of the majority of PFASs were determined in newborns and juveniles than in adults, suggesting effective placental and lactational transfer of PFASs. Legacy per-and polyfluoroalkyl acids and perfluorooctane sulfonamide in beluga whale liver were found to significantly decrease in concentration between 2000 and 2017, while unregulated short-chain PFAS alternatives, H-PFCAs, and odd-chain FTCAs were found to increase over time. The implementation of suspect and nontarget screening revealed class-specific temporal trends of PFASs in SLE beluga whales, and supported continuous emissions of unregulated PFASs into the environment.

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“…Seal blubber samples were extracted for SCCPs at the Québec Laboratory for Environmental Testing (Environment and Climate Change Canada). Samples weighing 1 g were homogenized with diatomaceous earth (J. T. Baker) and spiked with 100 μl of a 200 ng/ml internal standard solution (brominated diphenyl ether 30 [BDE‐30], BDE‐156, 13 C‐BDE‐209, and 13 C‐ anti ‐DP; Simond et al, 2017, 2020). Samples were extracted with 1:1 dichloromethane:hexane on a pressurized liquid extraction system.…”

Section: Methodsmentioning

confidence: 99%

Measurable Levels of Short‐Chain Chlorinated Paraffins in Western Hudson Bay Fishes but Limited Biomagnification from Fish to Ringed Seals

Facciola

Pedro

Houde

et al. 2021

Enviro Toxic and Chemistry

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We investigated short‐chain (C10–13) chlorinated paraffins (SCCP) in an Arctic marine food web. In zooplankton, fishes, and ringed seals from western Hudson Bay, Canada, SCCP concentrations ranged from 38.3 to 687 ng g–1 lipid weight. Monte Carlo–simulated trophic‐adjusted biomagnification factors of individual SCCP congeners ranged from 0.07 to 0.55 for small pelagic fishes to seals. Despite relatively high concentrations in fishes, biomagnification of SCCPs within this food web appears limited. Environ Toxicol Chem 2021;40:2990–2999. © 2021 SETAC

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Metabolomic profiles of the endangered St. Lawrence Estuary beluga population and associations with organohalogen contaminants

Cited by 22 publications

References 66 publications

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

The Flame-Retardant Mechanisms and Preparation of Polymer Composites and Their Potential Application in Construction Engineering

Suspect and Nontarget Screening Revealed Class-Specific Temporal Trends (2000–2017) of Poly- and Perfluoroalkyl Substances in St. Lawrence Beluga Whales

Measurable Levels of Short‐Chain Chlorinated Paraffins in Western Hudson Bay Fishes but Limited Biomagnification from Fish to Ringed Seals

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