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Potential for metal contamination by direct sonication of nanoparticle suspensions
Author(s) -
Betts Julia N.,
Johnson Mark G.,
Rygiewicz Paul T.,
King George A.,
Andersen Christian P.
Publication year - 2013
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.2123
Subject(s) - sonication , zeta potential , contamination , titanium dioxide , nanoparticle , materials science , aluminium , chemical engineering , metal , alloy , dynamic light scattering , environmental chemistry , chemistry , nanotechnology , metallurgy , chromatography , ecology , engineering , biology
While conducting toxicity tests with nano titanium dioxide, the authors found that test suspensions were being contaminated with aluminum and titanium from tip erosion during direct sonication. The contaminating alloy particles had a measurable size distribution and zeta potential using dynamic light scattering, which changed the measured characteristics of the suspensions. Caution should be used when employing direct sonication for preparing test suspensions due to potential interferences of these particles in toxicological assessments. Environ. Toxicol. Chem. 2013;32:889–893. © 2013 SETAC