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165715 
Journal Article 
Usef the modified BCR three-step sequential extraction procedure for the studyf trace elementynamicsn contaminated soils 
Pueyo, M; Mateu, J; Rigol, A; Vidal, M; Lopez-Sanchez, JF; Rauret, G 
2008 
Yes 
Environmental Pollution
ISSN: 0269-7491
EISSN: 1873-6424 
ELSEVIER SCI LTD 
OXFORD 
152 
2 
330-341 
English 
17655986 
WOS:000254968200009 
The modified BCR three-step sequential extraction procedure was used to examine the temporalynamicsf trace elementsn soils contaminated by an accidental spill from anpencast minen south-west Spain. Soils were mainly contaminated with pyritic sludge and acidic wastewater, whereas some soils were affectednly by acidic wastewater. Theistributionsbtained for both some major (Ca, Fe and Mn) and trace elements (As, Cd, Cu, Pb and Zn)n the sludge and soil samples taken atifferent times after the accident, 1-3 months and 21 months, were compared. Sequential extractions were usefulndentifyingifferent sourcesf contamination, andnbtaining additionalnformationn the solubilityf secondary minerals formed by pyritexidation. Thus, the effectivenessf the BCR procedure has proved to be a useful tool for predicting short- and long-term mobilityf trace elements, evenn complex environmental scenarios. 
Adsorption; Calcium/analysis; Environmental Monitoring/ methods; Geologic Sediments/ chemistry; Iron/analysis; Manganese/analysis; Metals/analysis; Mining; Sewage; Soil Pollutants/ analysis; Spain; Trace Elements/ analysis