Jump to main content
Jump to site search

Issue 8, 2010
Previous Article Next Article

TiO2 nano- and micro-particles in commercial foundation creams: Field Flow-Fractionation techniques together with ICP-AES and SQW Voltammetry for their characterization

Author affiliations

Abstract

A procedure to determine the presence of nano- or micro- TiO2 particles in commercial cosmetic formulations, which may have a daily use, is proposed. Two identification techniques the Square Wave Voltammetry (SWV) and ICP-AES were employed to determine the amount of TiO2 in six foundation creams sold in Italy and the USA. A new SWV method, based on an acidic microwave-assisted digestion of the sample, has been set up and the results were compared and critically commented with those obtained by the established ICP-AES method. The analytical procedure was verified by analyzing the P-25 Degussa sample. The sizes of the particles contained in the foundations were investigated through Sedimentation (SdFFF) and Flow Field-Flow Fractionation (FlFFF) by analyzing aqueous slurries obtained from the foundation through a solvent extraction procedure. The FFF techniques synergically coupled with the ICP-AES made it possible to assess the sizes of the TiO2 particles. The content of the extracted slurries was also checked by TEM observation.

Graphical abstract: TiO2 nano- and micro-particles in commercial foundation creams: Field Flow-Fractionation techniques together with ICP-AES and SQW Voltammetry for their characterization

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 30 Mar 2010, accepted on 10 May 2010 and first published on 10 Jun 2010


Article type: Paper
DOI: 10.1039/C0AY00205D
Citation: Anal. Methods, 2010,2, 1112-1124
  •   Request permissions

    TiO2 nano- and micro-particles in commercial foundation creams: Field Flow-Fractionation techniques together with ICP-AES and SQW Voltammetry for their characterization

    C. Contado and A. Pagnoni, Anal. Methods, 2010, 2, 1112
    DOI: 10.1039/C0AY00205D

Search articles by author