(Nano)particles of titanium dioxide detected in Belgian masks

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According to Sciensano, the Belgian health institute, (nano)particles of titanium dioxide have been detected, sometimes in very large quantities, in a significant number of masks tested in Belgium. The release of these particles has not been measured experimentally but

some masks contain so much titanium dioxide that a possible risk cannot be excluded” as titanium dioxide is a probable carcinogen by inhalation.

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