Comparison of analytical techniques for dynamic trace metal speciation in natural freshwaters.

2.50
Hdl Handle:
http://hdl.handle.net/10029/7169
Title:
Comparison of analytical techniques for dynamic trace metal speciation in natural freshwaters.
Authors:
Sigg, Laura; Black, Frank; Buffle, Jacques; Cao, Jun; Cleven, Rob; Davison, William; Galceran, Josep; Gunkel, Peggy; Kalis, Erwin; Kistler, David; Martin, Michel; Noël, Stéphane; Nur, Yusuf; Odzak, Niksa; Puy, Jaume; Riemsdijk, Willem van; Temminghoff, Erwin; Tercier-Waeber, Mary-Lou; Toepperwien, Stefanie; Town, Raewyn M; Unsworth, Emily R; Warnken, Kent W; Weng, Liping; Xue, Hanbin; Zhang, Hao
Abstract:
Several 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.
Citation:
Environ. Sci. Technol. 2006, 40(6):1934-41
Issue Date:
15-Mar-2006
URI:
http://hdl.handle.net/10029/7169
PubMed ID:
16570618
Type:
Article
Language:
en
ISSN:
0013-936X
Appears in Collections:
Environment

Full metadata record

DC FieldValue Language
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.en
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-

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