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Colloidal Stability and Toxicity of Gold Nanoparticles and Gold Chloride on Chlamydomonas reinhardtii

Behra, Renata ; Wagner, Bettina ; Sgier, Linn ; Kistler, David

In: Aquatic Geochemistry, 2015, vol. 21, no. 2-4, p. 331-342

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    Titre
    • Colloidal Stability and Toxicity of Gold Nanoparticles and Gold Chloride on Chlamydomonas reinhardtii
    Auteur
    • Behra, Renata. Department of Environmental Toxicology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
    • Wagner, Bettina. Department of Environmental Toxicology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
    • Sgier, Linn. Department of Environmental Toxicology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
    • Kistler, David. Department of Environmental Toxicology, Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Aquatic Geochemistry, 2015, vol. 21, no. 2-4, p. 331-342. Springer Netherlands
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:332986
    Summary
    Here we have examined interactions of gold nanoparticles differing in primary particle size and coating with the green algae Chlamydomonas reinhardtii as function of the colloidal stability of the particles in the experimental media used for toxicity studies. Interactions of dissolved Au3+ ions with algae were also examined. Included endpoints were photosynthetic yield and algal growth. Morphological and structural effects were examined microscopically and by flow cytometry. The results indicate no significant toxicity of gold nanoparticles to C. reinhardtii. Analysis of published data suggests toxicity of gold nanoparticles on algal growth to relate rather to particular coatings than to the gold core.