Soil particle size fraction and potentially toxic elements bioaccessibility: A review

In the last decade, extensive studies have been conducted to quantify influence of different factors on potentially toxic elements (PTE) bioaccessibility in soil; one most important is soil size fraction. However, there no agreement about fraction and methods investigate bioaccessibility, as very few review articles are available PTE none addressed particle bioaccessibility. This study provides a relations between fractions. The research indicates that distribution across fractions varies widely soil, but general trend higher finer was found. may exhibit relationships and, some cases, their seems be more related source chemico-physical form soil. Often, pollution health risk assessed based total concentration rather than bioaccessible fraction, from it appears consensus must pursued determine fine achieve accurate human assessment.