A review of the studies performed over the last ten years about heavy metal distribution among Suspended Particulate Matter (SPM) and dissolved phase in Po River (Italy) is presented. The different methodologies employed to collect, concentrate and fractionate the sample are summarized. The importance of metal speciation as a function of particle size is underlined and two approaches to metal speciation in the colloidal fraction of Po River SPM, by Sedimentation Field-Flow fractionation (SdFFF) and by pH-dependent extractions, is presented. The need of a comparison with a “natural background level” for metal load on particulate matter in Po River, to obtain the real metal contribution to river pollution, is also underlined. The high values of transition trace elements, such as Cr and Ni, have been compared with clay sediments around Ferrara and with bricks of historic buildings. The high comparable naturally concentration in Po fine sedimentary rocks and in historic buildings of Ferrara (XII-XVI centuries) can give information about the natural metal content.

Metal content in river suspended particulate matter: Data on PO River.

BLO, Gabriella;CONATO, Chiara;CONTADO, Catia;FAGIOLI, Francesco;VACCARO, Carmela;DONDI, Francesco
2004

Abstract

A review of the studies performed over the last ten years about heavy metal distribution among Suspended Particulate Matter (SPM) and dissolved phase in Po River (Italy) is presented. The different methodologies employed to collect, concentrate and fractionate the sample are summarized. The importance of metal speciation as a function of particle size is underlined and two approaches to metal speciation in the colloidal fraction of Po River SPM, by Sedimentation Field-Flow fractionation (SdFFF) and by pH-dependent extractions, is presented. The need of a comparison with a “natural background level” for metal load on particulate matter in Po River, to obtain the real metal contribution to river pollution, is also underlined. The high values of transition trace elements, such as Cr and Ni, have been compared with clay sediments around Ferrara and with bricks of historic buildings. The high comparable naturally concentration in Po fine sedimentary rocks and in historic buildings of Ferrara (XII-XVI centuries) can give information about the natural metal content.
2004
Blo, Gabriella; Conato, Chiara; Contado, Catia; Fagioli, Francesco; Vaccaro, Carmela; Dondi, Francesco
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1196861
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