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Dissolution and aggregation of Cu nanoparticles in culture media: effects of incubation temperature and particles size

  • Lingxiangyu Li
  • María Luisa Fernández-Cruz
  • Mona Connolly
  • Michael Schuster
  • José María NavasEmail author
Research Paper

Abstract

Here, the effects of incubation temperature and particle size on the dissolution and aggregation behavior of copper nanoparticles (CuNPs) in culture media were investigated over 96 h, equivalent to the time period for acute cell toxicity tests. Three CuNPs with the nominal sizes of 25, 50, and 100 nm and one type of micro-sized particles (MPs, ~500 nm) were examined in culture media used for human and fish hepatoma cell lines acute tests. A large decrease in sizes of CuNPs in the culture media was observed in the first 24 h incubation, and subsequently the sizes of CuNPs changed slightly over the following 72 h. Moreover, the decreasing rate in size was significantly dependent on the incubation temperature; the higher the incubation temperature, the larger the decreasing rate in size. In addition to that, we also found that the release of copper ions depended on the incubation temperature. Moreover, the dissolution rate of Cu particles increased very fast in the first 24 h, with a slight increase over the following 72 h.

Keywords

Cu nanoparticles Culture media Incubation temperature Aggregation Dissolution 

Notes

Acknowledgments

This research project was financed by the China Postdoctoral Science Foundation (2014M560124) and Graduate School of Technische Universität München. The authors acknowledge Luis Alte García-Olías (Department of Environment, INIA, Spain) for his technical assistance.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Lingxiangyu Li
    • 1
  • María Luisa Fernández-Cruz
    • 2
  • Mona Connolly
    • 2
  • Michael Schuster
    • 3
  • José María Navas
    • 2
    Email author
  1. 1.State Key Laboratory of Environmental Chemistry and EcotoxicologyResearch Center for Eco-Environmental Sciences, Chinese Academy of SciencesBeijingChina
  2. 2.Department of EnvironmentSpanish National Institute for Agricultural and Food Research and Technology - INIAMadridSpain
  3. 3.Department of ChemistryTechnische Universität MünchenGarchingGermany

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