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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


BOSSO, Sergio Tagliaferri  and  ENZWEILER, Jacinta. Essays for determining lead (Bio)availability in contaminated soils: review. Quím. Nova [online]. 2008, vol.31, n.2, pp.394-400. ISSN 0100-4042.

Incidental ingestion of contaminated soils is a major route of Pb uptake by humans, especially by children. Lead speciation in soils controls its bioavailability. Bioavailability assessment requires the determination of the amount of absorbed lead if a contaminated soil is ingested. In vivo tests, which employ animals, are considered the best model to infer absorption of Pb. But they have some logistic limitations and several authors proposed in vitro methods, which simulate conditions of human digestion. Many of them present results which correlate with in vivo essays. Several authors consider in vitro tests a good and reliable alternative to infer lead bioavailability.

Keywords : bioaccessibility; bioavailability; lead in soils.

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