Etudes des differentes methodes de speciation des iyietaux lourds dans les sediments. I. etude bibliographique (study of different methods of speciation of heavy metals in sediments 1. A review)

We have reviewed the different methods described in the litterature and we have observed the chemical signification of each possible phase. Then examples and recommandations for using the different methods are presented. The choosen method is given with applications.