Algal toxicity of binary mixtures of zinc oxide nanoparticles and tetrabromobisphenol A: Roles of dissolved organic matters.

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  • Author(s): Meng Y;Meng Y; Wang S; Wang S; Wang Z; Wang Z; Ye N; Ye N; Fang H; Fang H
  • Source:
    Environmental toxicology and pharmacology [Environ Toxicol Pharmacol] 2018 Dec; Vol. 64, pp. 78-85. Date of Electronic Publication: 2018 Sep 25.
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Science B.V Country of Publication: Netherlands NLM ID: 9612020 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1872-7077 (Electronic) Linking ISSN: 13826689 NLM ISO Abbreviation: Environ Toxicol Pharmacol Subsets: MEDLINE
    • Publication Information:
      Original Publication: Amsterdam : Elsevier Science B.V., c1996-
    • Subject Terms:
      Benzopyrans/*pharmacology ; Microalgae/*drug effects ; Nanoparticles/*toxicity ; Polybrominated Biphenyls/*toxicity ; Scenedesmus/*drug effects ; Zinc Oxide/*toxicity; Cell Membrane Permeability/drug effects ; Chloroplasts/drug effects ; Chloroplasts/metabolism ; Drug Interactions ; Membrane Potential, Mitochondrial/drug effects ; Microalgae/physiology ; Microalgae/ultrastructure ; Oxidative Stress/drug effects ; Reactive Oxygen Species/metabolism ; Scenedesmus/physiology ; Scenedesmus/ultrastructure
    • Abstract:
      The present study investigated the impacts of dissolved organic matters (DOM) on joint toxicity involved in zinc oxide nanoparticles (ZnO NPs) and tetrabromobisphenol A (TBBPA) at relevant low-exposure concentrations (<1 mg/L). It was found that ZnO NPs in single and combined systems exhibited severe inhibition effects on a freshwater microalgae Scenedesmus obliquus. However, the presence of DOM slightly alleviated the growth inhibition toxicity induced by the binary mixtures of ZnO NPs and TBBPA. Ultrastructure analysis revealed that ZnO NPs caused structural damage to cells, including plasmolysis, membrane destruction, and the disruption of thylakoid in the chloroplast, regardless of the presence of coexisting substances. Oxidative stress biomarker quantitative analysis and in situ observations indicated that the massive accumulation of reactive oxygen species in the binary mixtures of ZnO NPs and TBBPA caused severe oxidative damage, but the presence of DOM significantly mitigated the damage.
      (Copyright © 2018 Elsevier B.V. All rights reserved.)
    • Contributed Indexing:
      Keywords: Dissolved organic matters; Freshwater microalgae; Mixture toxicity; Tetrabromobisphenol A; Zinc oxide nanoparticles
    • Accession Number:
      0 (Benzopyrans)
      0 (Polybrominated Biphenyls)
      0 (Reactive Oxygen Species)
      FQI02RFC3A (tetrabromobisphenol A)
      SOI2LOH54Z (Zinc Oxide)
      XII14C5FXV (fulvic acid)
    • Publication Date:
      Date Created: 20181012 Date Completed: 20190128 Latest Revision: 20190128
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/j.etap.2018.09.010
    • Accession Number:
      30308412