COMPARATIVE STUDY OF DIFFERENT EXTRACTION METHODS FOR EVALUATION OF BIOAVAILABILITY OF TERRESTRIAL SEDIMENT - BOUND METALLIC ELEMENTS

摘要

The objective of this paper is to compare different extraction methods for evaluation of bioavailability of some metallic elements, such as: Cd, Cu, Ni, Pb and Zn from the lake sediments collected from Rosia Montana aria and also from Sasar river and Racos stream, situated in Baia Mare aria. The paper contains also information about mobility tests applied to a BCR Certified Reference Material 701, lake sediment. The experimental data proved that NFX31 - 120/1-92 (EDTA and NH_4OAc solution) can be successfully used for estimate the release of metallic elements from terrestrial sediments polluted by mining activities.