The Bioaccessibility of Lead (Pb) from Vacuumed House Dust on Carpets in Urban Residences

Chang Ho Yu, Lih‐Ming Yiin and Paul J. Lioy

Risk Analysis, 2006, vol. 26, issue 1, 125-134

Abstract: Risk assessments for toxicants in environmental media via oral exposure often rely on measurements of total concentration in a collected sample. However, the human digestive system cannot dissolute all of a toxicant present in the binding matrix, and cannot absorb it with nearly 100% efficiency. In vitro bioaccessibility has been developed as a method to estimate oral bioavailability of a toxicant using a physiologically‐based extraction procedure. Bioaccessibility measurements are more physiologically relevant than strong acid leaching measurements of concentration. A method for measuring bioaccessible lead in house dust was derived from the bioaccessibility method currently used for heavy metals in contaminated soils. House dust was collected from carpets in typical urban residences. Bioaccessible lead was measured in house dust (

Date: 2006
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https://doi.org/10.1111/j.1539-6924.2006.00710.x

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Persistent link: https://EconPapers.repec.org/RePEc:wly:riskan:v:26:y:2006:i:1:p:125-134

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