25. Refining the human health risk assessment process in Northern Ireland through the use of oral bioaccessibility data

The Tellus geochemical surveys have identified significantly elevated concentrations of potentially toxic elements (PTEs) in rural soils from both natural sources (geogenic) and human activity (anthropogenic). In some areas PTE concentrations exceed generic soil screening criteria for assessing chronic exposure risks to human health. However, human health risk actually depends on the fraction of a…