PMID: 11917992Mar 29, 2002Paper

Comparison of copper speciation in coastal marine waters measured using analytical voltammetry and diffusion gradient in thin-film techniques

Environmental Science & Technology
Michael R Twiss, James W Moffett

Abstract

The diffusion gradient in thin-film hydrogel (DGT) probe is a promising tool for metal speciation work. Based on a passive sampling principle, it provides the potential for large data sets in complex regimes. DGT probes were deployed in waters characterized independently using competitive ligand exchange-adsorptive cathodic stripping voltammetry (CLE-ACSV). The CLE-ACSV used benzoyl acetone as the competitive ligand in discrete water samples collected during the deployment of the DGT probes. The DGT probes used a 15% polyacrylamide/0.4% bis-acrylamide cross-linker hydrogel and a Na-form of Chelex-100 to complex metal that fluxed into the probe through the hydrogel. Probes were deployed in locations characterized by the degree of pollution impact: the relatively pristine Vineyard Sound, MA, [Cu]total approximately 6 nM, small seasonally active harbors on Cape Cod, MA, [Cu]total = 12-64 nM, as well as a large polluted estuary, the Elizabeth River, VA, [Cu]total = 44-58 nM, and a large polluted port, San Diego Harbor, CA, [Cu]total = 23-103 nM. This is the first study where DGT probes have been compared with an independent speciation technique in marine systems and used to establish the diffusion coefficient of Cu-complexing ligan...Continue Reading

Citations

Jul 16, 2009·Environmental Monitoring and Assessment·Marco SchintuAntonio Contu
Aug 6, 2004·Journal of Aerosol Medicine : the Official Journal of the International Society for Aerosols in Medicine·Wolfgang G KreylingWinfried Möller
Jul 4, 2006·Environmental Pollution·Rudolf S S WuKenneth M Y Leung
Jul 4, 2007·Journal of Environmental Monitoring : JEM·Ian J AllanRichard Greenwood
Aug 9, 2008·Journal of Environmental Monitoring : JEM·Ian J AllanRichard Greenwood
Dec 18, 2013·Integrated Environmental Assessment and Management·Marc S GreenbergThomas F Parkerton
Oct 14, 2017·Analytical and Bioanalytical Chemistry·Delphine DevillersGilles Guibaud
May 13, 2020·Environmental Science and Pollution Research International·Maria LagerströmAnn-Kristin Eriksson-Wiklund
Jun 28, 2011·Analytica Chimica Acta·Aurélie PelfrêneFrancis Douay
Apr 17, 2009·Environmental Science & Technology·Vera I SlaveykovaDimiter L Tsalev
Jul 21, 2004·Environmental Science & Technology·David B SennJames P Shine
Sep 12, 2003·Environmental Science & Technology·Tim F RozanScott Robinson
Jan 31, 2004·Environmental Science & Technology·Michael R CallahanRobert H Byrne
Mar 3, 2007·Environmental Science & Technology·Karen A Merritt, Aria Amirbahman
May 7, 2003·Environmental Science & Technology·Robert J M HudsonKenneth W Bruland
Aug 10, 2004·Environmental Science & Technology·Martin M ShaferDavid E Armstrong
Dec 6, 2005·Environmental Science & Technology·Herman P van LeeuwenLaura Sigg

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