Search results - 5 results
Agglomeration of titanium dioxide nanoparticles increases toxicological responses in vitro and in vivo
small agglomerates. Conclusion: Agglomeration of TiO2 NP s influences their toxicity/biological responses and, large agglomerates do not appear less active than small agglomerates. This study provides ...
Is aggregated synthetic amorphous silica toxicologically relevant?
different sizes, it appeared that aggregates > 100 nm were not necessarily less cytotoxic than their nano-sized counterparts. This study suggests that aggregates of SAS are toxicologically relevant for the ...
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
in the EU specifications for E 171 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. ...
Toxicology of silica nanoparticles: an update
effects were mainly observed in acutely exposed animals, while no significant signs of toxicity were noted in chronically dosed animals. The correlation between in vitro and in vivo toxicity remains less ...
Biological control of the size and reactivity of catalytic Pd(0) produced by Shewanella oneidensis.
concentration and on the presence and properties of the electron donor. The addition of H(2) in the headspace allowed S. oneidensis to resist the toxic effects of Pd(II). Interestingly, 25 mM formate was a less ...