However, although the total metal content in soil is useful to estimate the degree of soil pollution, the mobility of metal does not necessarily depend directly on its total metal content (Kumar et al., 2013). Chemical speciation is usually used to understand the geochemical processes governing metal mobilization (Yuan et al., 2004) because provide knowledge about the identification and quantification of different species, forms or phases of metals present in a material, such as soil, sediment or waste (Naji et al., 2010), and its availability on the environment