Factors influencing the in-vitro oral bioaccessibility in topsoil from industrial areas (Wallonia, Belgium)

INTRODUCTION Oral bioaccessibility - the fraction of soil contaminant that dissolves in the human gastrointestinal tract - can be evaluated using various chemical extraction tests, some of which are designed to mimic biochemical conditions. As for any other partial extraction tests, bioaccessibility can be expected to be influenced not only by the soil parameters, but also by the characteristics of the contamination, such as the metal speciation, the contamination aging, etc. Here, we try to relate bioaccessibility measurements to factors that can only be obtained when the sampled soils are su... Mehr ...