The objective of this study was to mimic the biochemistry of the stomach and intestinal juices and the intestinal wall environment to test the relationship between the soil properties and the bioaccessibility of lead (Datta, Sarkar, and Andra. 2007).
The bioaccessibility of the soil was tested in a beaker model to stimulate the stomach and intestinal phase of the human digestive system. The results show a higher amount of lead in the stomach phase than in the intestinal phase in the lead-based paint-contaminated soil. In the Baltimore soils, 59% of the lead was in the stomach and 15% in the intestinal phase. In the San Antonio soils, lead in the stomach was 65% and 5% in the intestinal phase (Datta, Sarkar, and Andra. 2007).