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The chronic toxicity of CuO nanoparticles and copper salt to Daphnia magna.
J Hazard Mater. 2015; 283:416-22.JH

Abstract

In this study, the effects of CuO nanoparticles and CuCl2·2H2O were tested on Daphnia magna under chronic exposure scenarios. During a 21-day exposure to the nanoparticles and salt, the reproduction was followed by a daily count of the number of offspring. After the exposure, the adult Daphnia length and uptake of copper was measured. The dissolved, nanoparticle and aggregated fractions were distinguished in the exposure medium. The results showed that only a small fraction of the nanoparticles dissolved, while the majority of the particles formed large aggregates (>450 nm). The dissolved fraction of the nanoparticles corresponded with the dissolved fraction of the copper salt. The effects of the nanoparticles (reproduction EC10: 0.546 mg Cu/l, EC20: 0.693 mg Cu/l, EC50: 1.041 mg Cu/l) on reproduction and length were much lower than the effects of the copper salts (reproduction EC10: 0.017 mg Cu/l, EC20: 0.019 mg Cu/l, EC50: 0.022 mg Cu/l). Based upon total body analysis, the Daphnia copper concentration appeared much higher when exposed to the nanoparticles than when exposed to the salt. These combined results indicate that the toxicity of CuO nanoparticles to D. magna is caused by copper ions formed during dissolution of the nanoparticles in the exposure medium.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Adam N
Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Antwerp, Belgium. Electronic address: nathalieadam12@gmail.com.
Vakurov A
School of Chemistry, University of Leeds, Leeds, UK.
Knapen D
Physiology and Biochemistry of Domestic Animals, Department of Veterinary Sciences, University of Antwerp, Antwerp, Belgium.
Blust R
Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Antwerp, Belgium.

MeSH

AnimalsCopperDaphniaMetal NanoparticlesToxicity Tests, ChronicWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25464278

Citation

Adam, Nathalie, et al. "The Chronic Toxicity of CuO Nanoparticles and Copper Salt to Daphnia Magna." Journal of Hazardous Materials, vol. 283, 2015, pp. 416-22.
Adam N, Vakurov A, Knapen D, et al. The chronic toxicity of CuO nanoparticles and copper salt to Daphnia magna. J Hazard Mater. 2015;283:416-22.
Adam, N., Vakurov, A., Knapen, D., & Blust, R. (2015). The chronic toxicity of CuO nanoparticles and copper salt to Daphnia magna. Journal of Hazardous Materials, 283, 416-22. https://doi.org/10.1016/j.jhazmat.2014.09.037
Adam N, et al. The Chronic Toxicity of CuO Nanoparticles and Copper Salt to Daphnia Magna. J Hazard Mater. 2015;283:416-22. PubMed PMID: 25464278.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The chronic toxicity of CuO nanoparticles and copper salt to Daphnia magna. AU - Adam,Nathalie, AU - Vakurov,Alexander, AU - Knapen,Dries, AU - Blust,Ronny, Y1 - 2014/09/30/ PY - 2014/05/26/received PY - 2014/09/14/revised PY - 2014/09/17/accepted PY - 2014/12/3/entrez PY - 2014/12/3/pubmed PY - 2016/2/13/medline KW - Aquatic KW - Copper KW - Length KW - Reproduction KW - Uptake SP - 416 EP - 22 JF - Journal of hazardous materials JO - J Hazard Mater VL - 283 N2 - In this study, the effects of CuO nanoparticles and CuCl2·2H2O were tested on Daphnia magna under chronic exposure scenarios. During a 21-day exposure to the nanoparticles and salt, the reproduction was followed by a daily count of the number of offspring. After the exposure, the adult Daphnia length and uptake of copper was measured. The dissolved, nanoparticle and aggregated fractions were distinguished in the exposure medium. The results showed that only a small fraction of the nanoparticles dissolved, while the majority of the particles formed large aggregates (>450 nm). The dissolved fraction of the nanoparticles corresponded with the dissolved fraction of the copper salt. The effects of the nanoparticles (reproduction EC10: 0.546 mg Cu/l, EC20: 0.693 mg Cu/l, EC50: 1.041 mg Cu/l) on reproduction and length were much lower than the effects of the copper salts (reproduction EC10: 0.017 mg Cu/l, EC20: 0.019 mg Cu/l, EC50: 0.022 mg Cu/l). Based upon total body analysis, the Daphnia copper concentration appeared much higher when exposed to the nanoparticles than when exposed to the salt. These combined results indicate that the toxicity of CuO nanoparticles to D. magna is caused by copper ions formed during dissolution of the nanoparticles in the exposure medium. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/25464278/The_chronic_toxicity_of_CuO_nanoparticles_and_copper_salt_to_Daphnia_magna_ DB - PRIME DP - Unbound Medicine ER -