Speciation of waste water sediments

摘要

A sequential extraction procedure for waste water sediments was elaborated based on CO2 and water extractants using supercritical fluid extraction instrumentation. The procedure gives information on water-soluble, carbonate-bound and mobile organic-bound trace metal fractions. The chemical interpretation of this procedure is comparable with the BCR recommended three-stage sequential extraction. The validation of the proposed procedure requires more detailed investigations. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 15]