Determination of Al, Cu, Fe, Mn, Pb and Zn in certified reference materials using the optimized BCR sequential extraction procedure

Sequential extraction procedures are widely used to characterize the fractionation of metal species in solid media. With the variety of different sequential procedures used in environmental and geochemical exploration studies, it is difficult to compare results between studies. Thus, harmonization a...

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Veröffentlicht in:Analytica chimica acta 2002-03, Vol.454 (2), p.249-257
Hauptverfasser: Sutherland, Ross A, Tack, Filip M.G
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description Sequential extraction procedures are widely used to characterize the fractionation of metal species in solid media. With the variety of different sequential procedures used in environmental and geochemical exploration studies, it is difficult to compare results between studies. Thus, harmonization and standardization are required to provide greater inter-study comparability for fraction-specific metals. In this study, the optimized BCR three-step sequential extraction procedure is applied to five certified reference materials (SRM 2710, SRM 2711, CRM 483, CRM 601 and CW 7). Four fractions are reported, acid extractable, reducible, oxidizable, and residual for Al, Cu, Fe, Mn, Pb and Zn. The objectives of this study were to characterize experimental precision and/or accuracy and to establish baseline data of fraction-specific element concentrations for future studies applying the optimized BCR three-step extraction procedure. The optimized procedure was found to be precise (typically
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subjects Acid extractable
CRM 483
CRM 601
CW 7
Fractionation
Oxidizable
Reducible
SRM 2710
SRM 2711
Standardized sequential extraction
title Determination of Al, Cu, Fe, Mn, Pb and Zn in certified reference materials using the optimized BCR sequential extraction procedure
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