A marine mesocosm study on the environmental fate of silver nanoparticles and toxicity effects on two endobenthic species: the ragworm Hediste diversicolor and the bivalve mollusc Scrobicularia plana

Research output: Contribution to journalArticle

Authors

  • Pierre-Emmanuel Buffet
  • Aurore Zalouk-Vergnoux
  • Amélie Châtel
  • Brigitte Berthet
  • Isabelle Métais
  • Hanane Perrein-Ettajani
  • Laurence Poirier
  • Andrea Luna-Acosta
  • Hélène Thomas-Guyon
  • Christine Risso-de Faverney
  • Marielle Guibbolini
  • Douglas Gilliland
  • Catherine Mouneyrac

Colleges, School and Institutes

Abstract

Silver nanoparticles are widely used in a range of products and processes for their antibacterial properties, electrical and thermal conductivity. The fate and effects of Ag nanoparticles were examined in two endobenthic species (Scrobicularia plana, Hediste diversicolor), under environmentally realistic conditions in outdoor mesocosms exposed to Ag at 10 μg L(-1) in nanoparticulate (Ag NPs) or soluble salt (AgNO3) forms for 21 days. Labile Ag was determined in water and sediment by using diffusive gradient in thin films. Ag levels were equivalent in contaminated Ag NPs mesocosms to those contaminated with the soluble form. Bioaccumulation of Ag was observed for both species exposed to either Ag in the nanoparticulate or ionic forms. Concerning biomarker responses, both soluble and nanoparticulate Ag forms, induced defenses against oxidative stress, detoxification, apoptosis, genotoxicity and immunomodulation. Nevertheless, DNA damages measured by the comet assay in the digestive gland of S. plana, and Phenoloxidase and lysozyme activities in S. plana and H. diversicolor, respectively, were higher in the presence of Ag NPs compared to soluble Ag suggesting a specific nano effect.

Bibliographic note

Copyright © 2013 Elsevier B.V. All rights reserved.

Details

Original languageEnglish
Pages (from-to)1151-9
Number of pages9
JournalScience of the Total Environment
Volume470-471
Publication statusPublished - 1 Feb 2014

Keywords

  • Animals, Biological Markers, Bivalvia, Ecosystem, Environmental Monitoring, Metal Nanoparticles, Polychaeta, Silver, Water Pollutants, Chemical