A PETROGRAPHIC INVESTIGATION OF TWO SEQUENTIAL EXTRACTION TECHNIQUES APPLIED TO ANAEROBIC CANAL BED MUD

摘要

The application of sequential extraction procedures to determine metal speciation in sediments is fraught with uncertainty regarding what is actually dissolving or re-precipitating at each stage. In order to choose an appropriate scheme for the investigation of contaminated anaerobic mud two different sequential extraction procedures(Kersten and Forstner, 1986; Quevauviller, 1998) were investigated using a Cryogenic SEM(CryoSEM)technique coupled with energy dispersive X-ray analysis(EDXA).