Leaching of flame-retardants from polystyrene debris: Bioaccumulation and potential effects on coral

MARINE POLLUTION BULLETIN

卷:151

Article

Aminot, Yann^1,2  Lanctot, Chantal^1,3  Bednarz, Vanessa⁴  Robson, William J.⁵  Taylor, Angus¹  Ferrier-Pages, Christine⁴  Metian, Marc¹  Tolosa, Imma¹ 

[1] IAEA, Environm Labs, 4a Quai Antoine 1er, MC-98000 Monte Carlo, Monaco

[2] IFREMER, Lab Biogeochem Organ Contaminants, Rue Ile Yeu,BP 21105, F-44311 Nantes 3, France

[3] Griffith Univ, Australian Rivers Inst, Southport, Qld 4215, Australia

[4] Ctr Sci Monaco, Equipe Ecophysiol Corallienne, 8 Quai Antoine 1er, MC-98000 Monte Carlo, Monaco

[5] Univ Plymouth, Biogeochem Res Ctr, Plymouth, Devon, England

关键词: Marine plastic;    Polystyrene foam;    Leachates;    Hexabromocyclododecanes;    Corals;    Bioconcentration;   

DOI  :  10.1016/j.marpolbul.2019.110862

来源: Elsevier

【 摘 要 】

Marine plastic debris can act as a reservoir of chemical additives that can pose a potential threat to sensitive ecosystems such as coral reefs. A survey of foam macrodebris collected on beaches indeed revealed high concentrations of hexabromocyclododecanes (Sigma HBCDD) in polystyrene (PS) samples (up to 1940 mg g(-1)). Results also showed that PS fragments can still leach over 150 ng g(-1) d(-1) of Sigma HBCDD (primarily as the alpha-isomer) for relatively long durations, and that these additives are readily bioaccumulated and well-retained by corals. Despite significant HBCDD bioaccumulation in coral tissue, short-term exposure to HBCDD or PS leachate had no considerable effect on coral photosynthetic activity, symbiont concentration and chlorophyll content. Exposure to the PS leachate did however cause consistent polyp retraction in nubbins over the 5-day exposure. This response was not observed in animals exposed to HBCDD alone, suggesting that another constituent of the leachate stressed corals.

【 授权许可】

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