作者
Ilona Velzeboer, A Jan Hendriks, Ad MJ Ragas, Dik Van de Meent
发表日期
2008/9
期刊
Environmental Toxicology and Chemistry: An International Journal
卷号
27
期号
9
页码范围
1942-1947
出版商
Wiley Periodicals, Inc.
简介
Nanoparticles of TiO2, ZrO2, Al2O3, CeO2, fullerene (C60), single‐walled carbon nanotubes, and polymethylmethacrylate were tested for ecotoxic effects using one or more ecotoxicity endpoints: Microtox® (bacteria), pulse‐amplitude modulation (algae), Chydotox (crustaceans), and Biolog® (soil enzymes). No appreciable effects were observed at nominal concentrations of up to 100 mg/L. Dilution of nanoparticle suspensions, either in ultrapure (Milli‐Q®) water or in natural (pond) water, led to formation of larger particles, which settled easily. (Nano)particles in water were characterized by means of atomic force microscopy, energy‐dispersive x‐ray analysis, inductively coupled plasma–mass spectrometry, flow cytometry, and spectrophotometry. It is concluded that the absence of ecotoxicity is the result of low concentrations of free nanoparticles in the tests, and it is suggested that colloid (in)stability is of primary …
引用总数
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I Velzeboer, AJ Hendriks, AMJ Ragas, D Van de Meent - … Toxicology and Chemistry: An International Journal, 2008