Metal concentration and bioaccessibility in different particle sizes of dust and aerosols to refine metal exposure assessment
- Goix, S.
- Uzu, Gaëlle
- Oliva, P.
- Barraza, F.
- Calas, A.
- Castet, S.
- Point, David
- Masbou, Jeremy
- Duprey, Jean-Louis
- Huayta, C.
- Chincheros, J.
- Gardon, Jacques
DOIAbstract
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., c...
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