Risk Assessment in Soils Developed on Metamorphic and Igneous Rocks Using Heavy Metal Sequential Extraction Procedure

摘要: Six areas developed on metamorphic and igneous parent materials were selected in Murcia Province (SE Spain), two from diabases, mica schist andesites. Three of them potentially polluted by anthropogenic sources the other three no polluted. One profile 6 surface samples collected each one order to identify Pb Zn concentrations bounded different soil phases using sequential extraction verify if existent differences soils same material are consequence activities, or natural geochemical contributions. The results showed that present higher total come registered percentages these heavy metals most labile (exchangeable organic matter metals). In addition, carbonate phase is also an important sink metals, however rocks this constituent very low due exchangeable retain metals. This behaviour increases risk mobility trophic chain plants microorganisms may absorb