Most of the studies on polybrominated biphenyls (PBB) have been on toxicological evaluations. Very few studies have dealt with their persistence and concentration potential in several environmental matrices such as soil, sediments, and biota as a function of matrix properties. The understanding of these relationships will form some basis for assessing the characteristics of the contaminant's be...

For the past three decades, most attention in heavy metal toxicology has been paid to cadmium, mercury, lead, chromium, nickel, vanadium, and tin because these metals widely polluted the environment. However, with the development of new materials in the last decade, the need for toxicological studies on those new materials has been increasing. A group of rare earths (RE) is a good example. Alth...