Goix S., Lévêque T., Xiong T. T., Schreck E., Baeza-Squiban A., Geret F., Uzu Gaëlle, Austruy A., Dumat C. (2014). Environmental and health impacts of fine and ultrafine metallic particles : assessment of threat scores. Environmental Research, 133, p. 185-194. ISSN 0013-9351.
Titre du document
Environmental and health impacts of fine and ultrafine metallic particles : assessment of threat scores
Année de publication
2014
Auteurs
Goix S., Lévêque T., Xiong T. T., Schreck E., Baeza-Squiban A., Geret F., Uzu Gaëlle, Austruy A., Dumat C.
Source
Environmental Research, 2014,
133, p. 185-194 ISSN 0013-9351
This study proposes global threat scores to prioritize the harmfulness of anthropogenic fine and ultrafine metallic particles (FMP) emitted into the atmosphere at the global scale. (Eco)toxicity of physicochemically characterized FMP oxides for metals currently observed in the atmosphere (CdO, CuO, PbO, PbSO4, Sb2O3, and ZnO) was assessed by performing complementary in vitro tests: ecotoxicity, human bioaccessibility, cytotoxicity, and oxidative potential. Using an innovative methodology based on the combination of (eco)toxicity and physicochemical results, the following hazard classification of the particles is proposed: CdCl2 similar to CdO > CuO > PbO > ZnO > PbSO4 > Sb2O3. Both cadmium compounds exhibited the highest threat score due to their high cytotoxicity and bioaccessible dose, whatever their solubility and speciation, suggesting that cadmium toxicity is due to its chemical form rather than its physical form. In contrast, the Sb2O3 threat score was the lowest due to particles with low specific area and solubility, with no effects except a slight oxidative stress. As FMP physicochemical properties reveal differences in specific area, crystallization systems, dissolution process, and speciation, various mechanisms may influence their biological impact. Finally, this newly developed and global approach could be widely used in various contexts of pollution by complex metal particles and may improve risk management.
Plan de classement
Sciences du milieu [021]
;
Santé : généralités [050]
Localisation
Fonds IRD [F B010062402]
Identifiant IRD
fdi:010062402
