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dc.contributor.authorSigg, Laura
dc.contributor.authorBlack, Frank
dc.contributor.authorBuffle, Jacques
dc.contributor.authorCao, Jun
dc.contributor.authorCleven, Rob
dc.contributor.authorDavison, William
dc.contributor.authorGalceran, Josep
dc.contributor.authorGunkel, Peggy
dc.contributor.authorKalis, Erwin
dc.contributor.authorKistler, David
dc.contributor.authorMartin, Michel
dc.contributor.authorNoël, Stéphane
dc.contributor.authorNur, Yusuf
dc.contributor.authorOdzak, Niksa
dc.contributor.authorPuy, Jaume
dc.contributor.authorRiemsdijk, Willem van
dc.contributor.authorTemminghoff, Erwin
dc.contributor.authorTercier-Waeber, Mary-Lou
dc.contributor.authorToepperwien, Stefanie
dc.contributor.authorTown, Raewyn M
dc.contributor.authorUnsworth, Emily R
dc.contributor.authorWarnken, Kent W
dc.contributor.authorWeng, Liping
dc.contributor.authorXue, Hanbin
dc.contributor.authorZhang, Hao
dc.date.accessioned2007-01-10T11:38:18Z
dc.date.available2007-01-10T11:38:18Z
dc.date.issued2006-03-15
dc.identifier.citationEnviron. Sci. Technol. 2006, 40(6):1934-41en
dc.identifier.issn0013-936X
dc.identifier.pmid16570618
dc.identifier.urihttp://hdl.handle.net/10029/7169
dc.description.abstractSeveral techniques for speciation analysis of Cu, Zn, Cd, Pb, and Ni are used in freshwater systems and compared with respect to their performance and to the metal species detected. The analytical techniques comprise the following: (i) diffusion gradients in thin-film gels (DGT); (ii) gel integrated microelectrodes combined to voltammetric in situ profiling system (GIME-VIP); (iii) stripping chronopotentiometry (SCP); (iv) flow-through and hollow fiber permeation liquid membranes (FTPLM and HFPLM); (v) Donnan membrane technique (DMT); (vi) competitive ligand-exchange/stripping voltammetry (CLE-SV). All methods could be used both under hardwater and under softwater conditions, although in some cases problems with detection limits were encountered at the low total concentrations. The detected Cu, Cd, and Pb concentrations decreased in the order DGT > or = GIME-VIP > or = FTPLM > or = HFPLM approximately = DMT (>CLE-SV for Cd), detected Zn decreased as DGT > or = GIME-VIP and Ni as DGT > DMT, in agreement with the known dynamic features of these techniques. Techniques involving in situ measurements (GIME-VIP) or in situ exposure (DGT, DMT, and HFPLM) appear to be appropriate in avoiding artifacts which may occur during sampling and sample handling.
dc.format.extent423648 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoenen
dc.titleComparison of analytical techniques for dynamic trace metal speciation in natural freshwaters.en
dc.typeArticleen
dc.format.digYES
refterms.dateFOA2018-12-18T14:53:36Z
html.description.abstractSeveral techniques for speciation analysis of Cu, Zn, Cd, Pb, and Ni are used in freshwater systems and compared with respect to their performance and to the metal species detected. The analytical techniques comprise the following: (i) diffusion gradients in thin-film gels (DGT); (ii) gel integrated microelectrodes combined to voltammetric in situ profiling system (GIME-VIP); (iii) stripping chronopotentiometry (SCP); (iv) flow-through and hollow fiber permeation liquid membranes (FTPLM and HFPLM); (v) Donnan membrane technique (DMT); (vi) competitive ligand-exchange/stripping voltammetry (CLE-SV). All methods could be used both under hardwater and under softwater conditions, although in some cases problems with detection limits were encountered at the low total concentrations. The detected Cu, Cd, and Pb concentrations decreased in the order DGT > or = GIME-VIP > or = FTPLM > or = HFPLM approximately = DMT (>CLE-SV for Cd), detected Zn decreased as DGT > or = GIME-VIP and Ni as DGT > DMT, in agreement with the known dynamic features of these techniques. Techniques involving in situ measurements (GIME-VIP) or in situ exposure (DGT, DMT, and HFPLM) appear to be appropriate in avoiding artifacts which may occur during sampling and sample handling.


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