One-pot Synthesis of TiO2 Nanoparticles in Suspensions for Quantification of Titanium Debris Release in Biological LiquidsReportar como inadecuado




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In this work we have developed an analytical method to measure potential titanium debris released from TiO2 nanotube layers devices immersed in biological fluids. This quantitative study is highly required to ensure both the security and non toxicity of the nanostructured surfaces used as future implantable medical devices in the living. A one-pot synthesis process is developed to produce high quality standard solutions of titanium dioxide nanoparticles in aqueous medium. The elaborated dispersion is then used to fabricate standard solutions in both aqueous and human blood plasma media. The synthesized nanoparticles dispersion was characterized by granulometry. The nanoparticles structure and morphology were then observed using Transmission Electron Microscopy TEM. Thermogravimetric Analysis TGA was used to evaluate the concentration of TiO2 in the suspension. A quantitative routine by the use of Inductively Coupled Plasma Atomic Emission Spectroscopy ICP-AES is developed. The quantification threshold of titanium species is found to be in the 30 - 40 ppb range. None interference is detected between the particles and the human blood plasma. Using the established quantitative routine, the titanium species release from titania nanotube layers in human blood plasma is evaluated.

KEYWORDS

Titanium Dioxide Nanotube Layer; TiO2 Nanoparticles; Debris Release; Biological Matrix; Inductively Coupled Plasma Atomic Emission Spectroscopy

Cite this paper

Massard, C. , Bourdeaux, D. , Raspal, V. , Feschet-Chassot, E. , Sibaud, Y. , Caudron, E. , Devers, T. and Awitor, K. 2012 One-pot Synthesis of TiO2 Nanoparticles in Suspensions for Quantification of Titanium Debris Release in Biological Liquids. Advances in Nanoparticles, 1, 86-94. doi: 10.4236-anp.2012.13012.





Autor: Christophe Massard, Daniel Bourdeaux, Vincent Raspal, Emmanuelle Feschet-Chassot, Yves Sibaud, Eric Caudron, Thierry Devers, Kolm

Fuente: http://www.scirp.org/



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