title: Conventional, microwave, and ultrasound sequential extractions for the fractionation of metals in sediments within the Petrochemical Industry, Serbia.
abstract: In this paper, the main objective was fractionation of Cd, Cu, Ni, Pb, Zn, Ca, Fe, and K in certificate material and sediment samples gathered from and around the Petrochemical Industry using the conventional, microwave and ultrasonic sequential extraction. Microwave oven and ultrasound bath were used as an energy source for achieving faster extraction. Additional heating and boiling of samples were avoided by using lower power and shorter time for microwave and ultrasound extraction. Precision and accuracy of procedure were evaluated by using certificate material (BCR701). Acceptable accuracy of metals (87.0-111.3 %) was achieved for all three-step sequential of conventional extraction protocol. An accuracy of the fourth step has been verified with two certificate materials: BCR143R and 146R. The range of total extracted metal concentrations from sediments was similar for all three extraction techniques. A significant high percentage of Cd, Cu, and Zn were obtained after extraction of the exchangeable and acid soluble sediment fraction. Principal component analysis of values obtained after determination of risk assessment code using conventional and ultrasound sequential extraction show similarity of these values. Accuracy, recovery, and risk assessment code values imply that ultrasound sequential extraction is a more suitable, accelerated sequential extraction procedure (30 min per extraction step) than microwave extraction in applied conditions.
authors: Faculty of Chemistry, University of Belgrade, PO Box 51, Belgrade 11158, Serbia. dradman@chem.bg.ac.rs
authors: Dubravka
authors: D
authors: Relić
authors: Dragana
authors: D
authors: Dorđević
authors: Sanja
authors: S
authors: Sakan
authors: Ivan
authors: I
authors: Anđelković
authors: Ana
authors: A
authors: Pantelić
authors: Ratomir
authors: R
authors: Stanković
authors: Aleksandar
authors: A
authors: Popović
mesh_terms: D005591:Chemical Fractionation / Q000379:methods*; D002617:Chemical Industry; D004784:Environmental Monitoring / Q000379:methods; D019015:Geologic Sediments / Q000737:chemistry*; D008670:Metals / Q000032:analysis / Q000737:chemistry*; D008872:Microwaves; D055771:Serbia; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry*; D014465:Ultrasonics
chemical_list: D008670:Metals; D012989:Soil Pollutants