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Acute toxicity of a mixture of copper and single-walled carbon nanotubes to Daphnia magna

✍ Scribed by Ki T. Kim; Stephen J. Klaine; Sijie Lin; Pu C. Ke; Sang D. Kim

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
118 KB
Volume
29
Category
Article
ISSN
0730-7268

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✦ Synopsis

Abstract

Nanomaterials released into the environment will interact with many materials including other contaminants. This may influence bioavailability and fate of both the nanoparticles and the other contaminants. The present study examined the effect of a combination of soluble copper and surface‐modified single‐walled carbon nanotubes (SWNTs) on Daphnia magna. Lysophosphatidylcholine (LPC) was used to modify the surface of SWNTs, reducing the surface hydrophobicity of the tubes and thereby producing a stable aqueous nanoparticle suspension. The toxicity of the nanoparticle–copper (Cu) mixture was determined to be additive. The addition of nontoxic concentration of LPC‐SWNTs enhanced the uptake and toxicity of copper. Greater amounts of Cu were shown to accumulate in D. magna upon addition of 0.5 and 1.0 mg/L LPC‐SWNTs. Environ. Toxicol. Chem. 2010;29:122–126. © 2009 SETAC

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