Bioavailability and distribution and of ceria nanoparticles in simulated aquatic ecosystems, quantification with a radiotracer technique

Kai Lu, Zhiyong Zhang, Xiao He, Yuhui Ma, Kebin Zhou, Haifeng Zhang, Wei Bai, Yayun Ding, Zhenqiang Wu, Yuliang Zhao, Zhifang Chai

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Although the presence of manufactured nanoparticles in the aquatic environment is still largely undocumented, their release could certainly occur in the future, particularly via municipal treatment plant effluents of cities supporting nano-industries. To get an initial estimate of the environmental behavior of nanomaterials, we investigated the distribution and accumulation of ceria nanoparticles in simulated aquatic ecosystems which included aquatic plant, shellfish, fish, water, and sediment using a radiotracer technique. Radioactive ceria ( 141CeO 2) nanoparticles with a diameter of ca. 7 nm were synthesized by a precipitation method and added to the simulated aquatic ecosystems. The results indicate that the concentration of ceria nanoparticles in water decreased to a steady-state value after 3 days; meanwhile, the concentrations of ceria nanoparticles in the aquatic plant and sediment increased to their highest values. The distribution and accumulation characteristics of ceria nanoparticles in various aquatic organisms were different. Ceratophyllum demersum showed a high ability of accumulation of ceria nanoparticles from water.

Original languageEnglish (US)
Pages (from-to)8658-8662
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume10
Issue number12
DOIs
StatePublished - Dec 2010

Keywords

  • Ceria nanoparticles
  • Radiotracer technique
  • Simulated aquatic ecosystem

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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