Goix S. auteur aut IRD Uzu Gaëlle auteur aut IRD Oliva P. auteur aut IRD Barraza F. auteur aut IRD Calas A. auteur aut IRD Castet S. auteur aut IRD Point David auteur aut IRD Masbou Jeremy auteur aut IRD Duprey Jean-Louis auteur aut IRD Huayta C. auteur aut IRD Chincheros J. auteur aut IRD Gardon Jacques auteur aut IRD text journalArticle eng text/pdf born digital access Refined exposure assessments were realized for children, 7-9 yrs, in the mining/smelting city of Oruro, Bolivia. Aerosols (PM>2.5, PM1-2.5, PM0.4-1 and PM0.5) and dust (separated in different particle size fractions: 2000-200 mu m, 200-50 mu m, 50-20 mu m, 20-2 mu m and <2 mu m) were sampled on football fields highly frequented by children in both the mining and smelting areas. Trace element concentrations (Ag, As, Cd, Cu, Pb, Sb, Sn and Zn) in each size fraction of dust and aerosols, lung bioaccessibility of metals in aerosols, and gastric bioaccessibility of metals in dust were measured. Exposure was assessed considering actual external exposure (i.e. exposure pathways: metals inhaled and ingested) and simulated internal exposure (i.e., complex estimation using gastric and lung bioaccessibility, deposition and clearance of particles in lungs). Significant differences between external and simulated internal exposure were attributed to dissemblances in gastric and lung bioaccessibilities, as well as metal distribution within particle size range, revealing the importance of both parameters in exposure assessment. specialized Lung bioaccessibility Gastric bioaccessibility Exposure assessment Metal Particle size BOLIVIE ANDES ORURO 050 064 020 021 317 552-562 2016 0304-3894 https://www.documentation.ird.fr/hor/fdi:010068104 10.1016/j.jhazmat.2016.05.083 0304-3894 [F B010068104] https://www.documentation.ird.fr/hor/fdi:010068104 https://www.documentation.ird.fr/intranet/publi/2016/10/010068104.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-11-03 2017-08-23 fdi:010068104 fre