Analysis of Ag(I) biocide in water samples using anodic stripping voltammetry with a boron-doped diamond disk electrode

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dc.careerEscuela de Ciencias Químicases
dc.category.authorprincipales
dc.contributor.authorEspinoza-Montero, Patricio Javier
dc.contributor.correspondingEspinoza Montero, Patricio Javieres
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:42:59Z
dc.date.available2023-11-04T21:42:59Z
dc.date.issued2018-05-14
dc.dedication.authorTCes
dc.description.abstractThe electroanalytical performance of a new commercial borondoped diamond disk and a traditional nanocrystalline thin-film electrode were compared for the anodic stripping voltammetric determination of Ag(I). The diamond disk electrode is more flexible than the planar film as the former is compatible with most electrochemical cell designs including those incorporating magnetic stirring. Additionally, mechanical polishing and surface cleaning are simpler to execute. Differential pulse anodic stripping voltammetry (DPASV) was used to detect Ag(I) in standard solutions after optimization of the deposition potential, deposition time and scan rate. The optimized conditions were used to determine the concentration of Ag(I) in a NASA simulated potable water sample and a NIST standard reference solution. The electrochemical results were validated by ICP-OES measurements of the same solutions. The detection figures of merit for the disk electrode were as good or superior to those for the thin-film electrode. Detection limits were ≤5 μgL −1 (S/N = 3) for a 120 s deposition period, and response variabilities were <5% RSD. The polished disk electrode presented a more limited linear dynamic range presumably because of the reduced surface area available for metal phase formation. The concentrations of Ag(I) in the two water samples, as determined by DPASV, were in good agreement with the concentrations determined by ICP-OES.es
dc.facultyCiencias Exactas y Naturaleses
dc.id.author2100381306es
dc.id.type1es
dc.identifier.doihttps://doi.org/10.1021/acs.analchem.7b04983es
dc.identifier.issn1520-6882
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acs.analchem.7b04983es
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5961
dc.indexed.databaseScimago Journal Rankes
dc.list.authorsMaldonado, M., Espinoza-Montero, P., Rusinek, C., y Swain, G.es
dc.magazine.pageRange6477-6485es
dc.magazine.titleAnalytical Chemistryes
dc.magazine.volumeChapter90es
dc.rightsOpenAccesses
dc.statepublishedes
dc.subjectBiocidases
dc.subjectElectroquímicaes
dc.subjectElectrodoses
dc.subjectIoneses
dc.titleAnalysis of Ag(I) biocide in water samples using anodic stripping voltammetry with a boron-doped diamond disk electrodees
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