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Daphnia magna mortality when exposed to titanium dioxide and fullerene (C60) nanoparticles

Environmental toxicology and chemistry, 2006-04, Vol.25 (4), p.1132-1137 [Peer Reviewed Journal]

Copyright © 2006 SETAC ;2006 INIST-CNRS ;Copyright Alliance Communications Group, A Division of Allen Press, Inc. Apr 2006 ;ISSN: 0730-7268 ;EISSN: 1552-8618 ;DOI: 10.1897/05-278R.1 ;PMID: 16629153 ;CODEN: ETOCDK

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Title:
Daphnia magna mortality when exposed to titanium dioxide and fullerene (C60) nanoparticles
Author: Lovern, Sarah B. ; Klaper, Rebecca
Subjects: Animal, plant and microbial ecology ; Animals ; Applied ecology ; Aquatic ecosystems ; Biological and medical sciences ; Crustaceans ; Daphnia - drug effects ; Daphnia magna ; Ecotoxicology, biological effects of pollution ; Filtration ; Freshwater ; Fullerenes ; Fullerenes - toxicity ; Fundamental and applied biological sciences. Psychology ; Furans ; General aspects ; Lethal Dose 50 ; Microscopy, Electron, Transmission ; Mortality ; Nanoparticles ; Nanostructures - toxicity ; Nanostructures - ultrastructure ; Sonication ; Titanium ; Titanium - toxicity ; Titanium dioxide
Is Part Of: Environmental toxicology and chemistry, 2006-04, Vol.25 (4), p.1132-1137
Description: Nanoparticles (1–100 nm) comprise the latest technological advances designed to do everything from absorb environmental toxins to deliver drugs to a target organ. Recently, however, they have come under scrutiny for the potential to cause environmental damage. Because compounds in this miniature size range have chemical properties that differ from those of their larger counterparts, nanoparticles deserve special attention. Our main objective was to assess the potential impact that nanoparticles may have on release into aquatic environments. We prepared titanium dioxide (TiO2) and fullerene (C60) nanoparticles by filtration in tetrahydrofuran or by sonication. Daphnia magna were exposed to the four solutions using U.S. Environmental Protection Agency 48‐h acute toxicity tests. Images of the particle solutions were recorded using transmission‐electron microscopy, and the median lethal concentration, lowest‐observable‐effect concentration, and no‐observable‐effect concentration were determined. Exposure to filtered C60 and filtered TiO2 caused an increase in mortality with an increase in concentration, whereas fullerenes show higher levels of toxicity at lower concentrations. Exposure to the sonicated solutions caused varied mortality. Understanding the potential impacts of nanoparticles will help to identify the most appropriate nanotechnology to preserve the aquatic environment while advancing medical and environmental technology.
Publisher: Hoboken: Wiley Periodicals, Inc
Language: English
Identifier: ISSN: 0730-7268
EISSN: 1552-8618
DOI: 10.1897/05-278R.1
PMID: 16629153
CODEN: ETOCDK
Source: MEDLINE
Alma/SFX Local Collection
ProQuest Central

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Daphnia magna mortality when exposed to titanium dioxide and fullerene (C60) nanoparticles

Copyright © 2006 SETAC ;2006 INIST-CNRS ;Copyright Alliance Communications Group, A Division of Allen Press, Inc. Apr 2006 ;ISSN: 0730-7268 ;EISSN: 1552-8618 ;DOI: 10.1897/05-278R.1 ;PMID: 16629153 ;CODEN: ETOCDK

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