PCDDs, PCDFs, and PCBs co-occurrence in TiO2 nanoparticles

Ctistis, Georgios; Schön, Peter; Bakker, Wouter; Luthe, Gregor

PCDDs, PCDFs, and PCBs co-occurrence in TiO2 nanoparticles

2016

Ctistis, Georgios | Schön, Peter | Bakker, Wouter | Luthe, Gregor

In the present study, we report on the co-occurrence of persistent organic pollutants (POPs) adsorbed on nanoparticular titanium dioxide (TiO₂). We report on the finding of polychlorinated dibenzodioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and polychlorinated biphenyls (PCBs) on the surface of commercially available TiO₂ nanoparticles, being formed during the fabrication process of the TiO₂. Thereby, the samples comprise PCBs with higher congener numbers or, in the absence of PCBs, a high concentration of PCDDs and PCDFs. This new class of POPs on an active catalytic surface and the great range of applications of nanoparticular TiO₂, such as in color pigments, cosmetics, and inks, give rise to great concern due to their potential toxicity.

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