Different toxicity mechanisms between bare and polymer-coated copper oxide nanoparticles in Lemna gibba

François Perreault; Radovan Popovic; David Dewez

doi:10.1016/j.envpol.2013.10.027

Different toxicity mechanisms between bare and polymer-coated copper oxide nanoparticles in Lemna gibba

François Perreault, Radovan Popovic, David Dewez

Research output: Contribution to journal › Article › peer-review

101 Scopus citations

Abstract

In this report, we investigated how the presence of a polymer shell (poly(styrene-co-butyl acrylate) alters the toxicity of CuO NPs in Lemna gibba. Based on total Cu concentration, core-shell CuO NPs were 10 times more toxic than CuO NPs, inducing a 50% decrease of growth rate at 0.4 g l^-1 after 48-h of exposure while a concentration of 4.5 g l^-1 was required for CuO NPs for a similar effect. Toxicity of CuO NPs was mainly due to NPs solubilization in the media. Based on the accumulated copper content in the plants, core-shell CuO NPs induced 4 times more reactive oxygen species compared to CuO NPs and copper sulfate, indicating that the presence of the polymer shell changed the toxic effect induced in L. gibba. This effect could not be attributed to the polymer alone and reveals that surface modification may change the nature of NPs toxicity.

Original language	English (US)
Pages (from-to)	219-227
Number of pages	9
Journal	Environmental Pollution
Volume	185
DOIs	https://doi.org/10.1016/j.envpol.2013.10.027
State	Published - 2014
Externally published	Yes

Keywords

Copper oxide nanoparticle
Lemna gibba
Nanotoxicology
Polymer coating
Reactive oxygen species

ASJC Scopus subject areas

Toxicology
Pollution
Health, Toxicology and Mutagenesis

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10.1016/j.envpol.2013.10.027

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title = "Different toxicity mechanisms between bare and polymer-coated copper oxide nanoparticles in Lemna gibba",

abstract = "In this report, we investigated how the presence of a polymer shell (poly(styrene-co-butyl acrylate) alters the toxicity of CuO NPs in Lemna gibba. Based on total Cu concentration, core-shell CuO NPs were 10 times more toxic than CuO NPs, inducing a 50% decrease of growth rate at 0.4 g l-1 after 48-h of exposure while a concentration of 4.5 g l-1 was required for CuO NPs for a similar effect. Toxicity of CuO NPs was mainly due to NPs solubilization in the media. Based on the accumulated copper content in the plants, core-shell CuO NPs induced 4 times more reactive oxygen species compared to CuO NPs and copper sulfate, indicating that the presence of the polymer shell changed the toxic effect induced in L. gibba. This effect could not be attributed to the polymer alone and reveals that surface modification may change the nature of NPs toxicity.",

keywords = "Copper oxide nanoparticle, Lemna gibba, Nanotoxicology, Polymer coating, Reactive oxygen species",

author = "Fran{\c c}ois Perreault and Radovan Popovic and David Dewez",

note = "Funding Information: This work was supported by the financial support of the Faculty of Sciences and the Department of Chemistry of UQAM given to Pr. David Dewez. Fran{\c c}ois Perreault was supported by a PhD fellowship from the Natural Sciences and Engineering Research Council of Canada. ",

year = "2014",

doi = "10.1016/j.envpol.2013.10.027",

language = "English (US)",

volume = "185",

pages = "219--227",

journal = "Environmental Pollution",

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T1 - Different toxicity mechanisms between bare and polymer-coated copper oxide nanoparticles in Lemna gibba

AU - Perreault, François

AU - Popovic, Radovan

AU - Dewez, David

N1 - Funding Information: This work was supported by the financial support of the Faculty of Sciences and the Department of Chemistry of UQAM given to Pr. David Dewez. François Perreault was supported by a PhD fellowship from the Natural Sciences and Engineering Research Council of Canada.

PY - 2014

Y1 - 2014

N2 - In this report, we investigated how the presence of a polymer shell (poly(styrene-co-butyl acrylate) alters the toxicity of CuO NPs in Lemna gibba. Based on total Cu concentration, core-shell CuO NPs were 10 times more toxic than CuO NPs, inducing a 50% decrease of growth rate at 0.4 g l-1 after 48-h of exposure while a concentration of 4.5 g l-1 was required for CuO NPs for a similar effect. Toxicity of CuO NPs was mainly due to NPs solubilization in the media. Based on the accumulated copper content in the plants, core-shell CuO NPs induced 4 times more reactive oxygen species compared to CuO NPs and copper sulfate, indicating that the presence of the polymer shell changed the toxic effect induced in L. gibba. This effect could not be attributed to the polymer alone and reveals that surface modification may change the nature of NPs toxicity.

AB - In this report, we investigated how the presence of a polymer shell (poly(styrene-co-butyl acrylate) alters the toxicity of CuO NPs in Lemna gibba. Based on total Cu concentration, core-shell CuO NPs were 10 times more toxic than CuO NPs, inducing a 50% decrease of growth rate at 0.4 g l-1 after 48-h of exposure while a concentration of 4.5 g l-1 was required for CuO NPs for a similar effect. Toxicity of CuO NPs was mainly due to NPs solubilization in the media. Based on the accumulated copper content in the plants, core-shell CuO NPs induced 4 times more reactive oxygen species compared to CuO NPs and copper sulfate, indicating that the presence of the polymer shell changed the toxic effect induced in L. gibba. This effect could not be attributed to the polymer alone and reveals that surface modification may change the nature of NPs toxicity.

KW - Copper oxide nanoparticle

KW - Lemna gibba

KW - Nanotoxicology

KW - Polymer coating

KW - Reactive oxygen species

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SN - 0269-7491

VL - 185

SP - 219

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JO - Environmental Pollution

JF - Environmental Pollution

ER -

Different toxicity mechanisms between bare and polymer-coated copper oxide nanoparticles in Lemna gibba

Abstract

Keywords

ASJC Scopus subject areas

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