Zoekresultaten - 4 results

Agglomeration of titanium dioxide nanoparticles increases toxicological responses in vitro and in vivo

exposed to these suspensions for 24 h and endpoints such as cytotoxicity, total glutathione, epithelial barrier integrity, inflammatory mediators and DNA damage were measured. Large agglomerates of 17 nm ...

Physicochemical Characterization of the Pristine E171 Food Additive by Standardized and Validated Methods.

spectrometry (spICP- MS). The evaluation of selected sample preparation protocols allowed identifying and optimizing the critical factors that determine the measurement of the particle size distribution by TEM. ...

Scientific opinion on the proposed amendment of the EU specifications for titanium dioxide (E 171) with respect to the inclusion of additional parameters related to its particle size distribution

a specification of more than 100 nm for median Feret min diameter and less than 50% of the number of constituent particles below 100 nm; measured by EM in both cases. The Panel, after reviewing the data, concluded ...

Physical Characterization of Nanomaterials in Dispersion by Transmission Electron Microscopy in a Regulatory Framework

test systems are described based on TEM micrographs. Subsequently, a quantitative analysis which includes detection, classification and measurement of primary particle properties, and validation of the ...

QR code

QR code for this page URL