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Silver nanoparticle - algae interactions: oxidative dissolution, reactive oxygen species generation and synergistic toxic effects
Citation
He, D and Dorantes Aranda, JJ and Waite, TD, Silver nanoparticle - algae interactions: oxidative dissolution, reactive oxygen species generation and synergistic toxic effects, Environmental Science and Technology (Washington), 46 pp. 8731-8738. ISSN 0013-936X (2012) [Refereed Article]
Copyright Statement
Coyright 2012 American Chemical Society
Abstract
The short-term toxicity of citrate-stabilized silver nanoparticles (AgNPs) and ionic silver Ag(I) to the ichthyotoxic marine raphidophyte Chattonella marina has been examined using the fluorometric indicator alamarBlue. Aggregation and dissolution of AgNPs occurred after addition to GSe medium while uptake of dissolved Ag(I) occurred in the presence of C. marina. Based on total silver mass, toxicity was much higher for Ag(I) than for AgNPs. Cysteine, a strong Ag(I) ligand, completely removed the inhibitory effects of Ag(I) and AgNPs on the metabolic activity of C. marina, suggesting that the toxicity of AgNPs was due to the release of Ag(I). Synergistic toxic effects of AgNPs/Ag(I) and C. marina to fish gill cells were observed with these effects possibly attributable to enhancement in the generation of reactive oxygen species by C. marina on exposure of the organism to silver.
Item Details
Item Type: | Refereed Article |
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Keywords: | silver nanoparticles, superoxide, toxicity, Chattonella marina, fish gill cells |
Research Division: | Earth Sciences |
Research Group: | Oceanography |
Research Field: | Chemical oceanography |
Objective Division: | Commercial Services and Tourism |
Objective Group: | Water and waste services |
Objective Field: | Waste management services |
UTAS Author: | Dorantes Aranda, JJ (Dr Juan Dorantes Aranda) |
ID Code: | 91572 |
Year Published: | 2012 |
Web of Science® Times Cited: | 126 |
Deposited By: | IMAS Research and Education Centre |
Deposited On: | 2014-05-22 |
Last Modified: | 2015-08-20 |
Downloads: | 0 |
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