Bioaccessible and quasi-total metals in soil and indoor dust

摘要: Children are exposed to metals via the ingestion of household dust and soil, but contaminated is much less documented than outdoor soil. In France, environmental home surveys carried out assess exposure young children bioaccessible lead. other countries, most metal in based on “total digestion” using strong acid extract all present samples. To compare contamination France with data from a sequential extraction protocol was developed assay concentrations fraction as well “quasi-total” digestion. Nine (As, Cd, Cr, Cu, Mn, Pb, Sb, Sr V) were chosen for analysis basis their mean level toxicity. Analyses performed by inductively coupled plasma mass spectrometry (ICP/MS). The “total” digestion validated NIST Standard Reference Materials ® SRM 2583 2584 As, Cd Pb samples nine certified reference material CRM SS2 soil quasi-total recovery dusts more 72 % metals, relative standard deviation 14 %, except Cd. For first time, evaluated 2583, SS2. This new tested (75) (4) 13 French homes, results expressed here time μg/m 2 . bioaccessibility very variable, ranging 0 100 %. Sr, while Sb V least. combined determination wipes appears be an appropriate method assessing human ingestion.