Robuta

https://pubmed.ncbi.nlm.nih.gov/18569605/
Surface-treated titanium dioxide (TiO(2)) particles coated with vanadium pentoxide (V(2)O(5)) are used industrially for selective catalytic reactions such as...
ultrafine titanium dioxidevanadium pentoxidecellular damagecoatedparticles
https://www.nist.gov/publications/indoor-ultrafine-particles-outdoor-origin-importance-window-opening-area-and-fan
Airborne ultrafine particles (UFP) have been associated with human mortality and morbidity.
ultrafine particlesindooroutdoororiginimportance
https://www.mdpi.com/1660-4601/18/18/9788
Ultrafine particles (UFPs) can be released unintentionally during metal additive manufacturing (AM).
metal additive manufacturingoccupational exposureultrafine particles