Pérez Cid, B Metal fractionation in olive oil and urban sewage sludges using the three-stage BCR sequential extraction method and microwave single extractions. [electronic resource] - The Analyst Aug 2001 - 1304-11 p. digital Publication Type: Journal Article ISSN: 0003-2654 Standard No.: 10.1039/b102768a doi Subjects--Topical Terms: Electrochemistry--methodsEnvironmental Pollutants--analysisMetals, Heavy--analysisMicrowavesOlive OilPlant OilsSewage