Universitat de Lleida
    • English
    • català
    • español
  • English 
    • English
    • català
    • español
  • Login
Repositori Obert UdL
View Item 
  •   Home
  • Recerca
  • Química
  • Articles publicats (Química)
  • View Item
  •   Home
  • Recerca
  • Química
  • Articles publicats (Química)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Free Zn2+ determination in natural freshwater of the Pyrenees: towards on-site measurements with AGNES

Thumbnail
View/Open
Postprint (915.5Kb)
Issue date
2015
Author
Parat, C.
Authier, L.
Castetbon,A.
Aguilar Camaño, David
Companys Ferran, Encarnació
Puy Llorens, Jaume
Galceran i Nogués, Josep
Potin-Gautier, M.
Suggested citation
Parat, C.; Authier, L.; Castetbon,A.; Aguilar Camaño, David; Companys Ferran, Encarnació; Puy Llorens, Jaume; ... Potin-Gautier, M.. (2015) . Free Zn2+ determination in natural freshwater of the Pyrenees: towards on-site measurements with AGNES. Environmental Chemistry, 2015, vol. 12, núm. 3, p. 329-337. https://doi.org/10.1071/EN14184.
Impact


Web of Science logo    citations in Web of Science

Scopus logo    citations in Scopus

Google Scholar logo  Google Scholar
Share
Export to Mendeley
Metadata
Show full item record
Abstract
An on-site methodology has been developed for the direct determination of free Zn2+ with AGNES (Absence of Gradients and Nernstian Equilibrium Stripping) in freshwaters. This implementation includes: i) the use of screen printed electrodes, which provide good limits of detection and easy transportation and deployment; ii) no need for sample purging; iii) a calibration in a synthetic river solution that reproduces well the speciation changes of the natural samples and allows the oxygen interferences to be minimised; iv) the addition of a background electrolyte up to 0.01 mol L-1 in both the calibration and freshwater samples; v) chemical stripping chronopotentiometry as the quantification stage of AGNES. This procedure minimizes the effects of working at low ionic strength and in the presence of dissolved oxygen. In the laboratory, the methodology was checked with different natural samples taken from rivers Garonne, Gave de Cauterets and Gave de Pau in the Pyrenees. Results appeared in good agreement with theoretical estimations computed from Visual Minteq. On-site measurements were performed for the first time with AGNES in the Gave de Cauterets in Soulom (France) and the results were corroborated with purged measurements performed in the laboratory.
URI
http://hdl.handle.net/10459.1/64724
DOI
https://doi.org/10.1071/EN14184
Is part of
Environmental Chemistry, 2015, vol. 12, núm. 3, p. 329-337
European research projects
Collections
  • Articles publicats (Química) [313]
  • Articles publicats (Agrotecnio Center) [1328]
  • Articles publicats (Didàctiques Específiques) [259]
  • Publicacions de projectes de recerca del Plan Nacional [2953]

Contact Us | Send Feedback | Legal Notice
© 2023 BiD. Universitat de Lleida
Metadata subjected to 
 

 

Browse

All of the repositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

Statistics

View Usage Statistics

D'interès

Política institucional d'accés obertDiposita les teves publicacionsDiposita dades de recercaSuport a la recerca

Contact Us | Send Feedback | Legal Notice
© 2023 BiD. Universitat de Lleida
Metadata subjected to