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Author dc.contributor.author Saavedra, Renato
Author dc.contributor.author Soto, César
Author dc.contributor.author Yañez, Jorge
Author dc.contributor.author Toral Ponce, María
Admission date dc.date.accessioned 2018-12-20T15:10:30Z
Available date dc.date.available 2018-12-20T15:10:30Z
Publication date dc.date.issued 2011
Cita de ítem dc.identifier.citation Microchemical Journal, Volumen 98, Issue 2, 2018, Pages 220-224
Identifier dc.identifier.issn 0026265X
Identifier dc.identifier.other 10.1016/j.microc.2011.02.003
Identifier dc.identifier.uri https://repositorio.uchile.cl/handle/2250/158209
Abstract dc.description.abstract This work forms part of an investigation which seeks to determine metal complexes in a solid phase by photoacoustic spectrometry (PAS). Results of spectral determination of Co(II) complexes are introduced. The method is based on Co(II) colorimetric reaction with 3-(2-pyridyl)-5,6-bis(4-sulfophenyl)-1,2,4-triazine (FST, ferrozine) retained on an anion-exchange resin, DEAE Sephadex A-25. The immobilization of Co(II) on the solid phase is combined with PAS measurement. A numerical approach is applied to reduce noise in the spectral data. At λ=477nm, the calibration for Co(II) is linear over the range 14-300μgL-1. The Co(II) concentration in water samples was determined by conventional photoacoustic measurement. The relative standard deviation (R.S.D.) of the method for the calibration is <5%. Under optimized conditions, the obtained analytical features were LOD 14μgL-1 and LOQ 45μgL-1. © 2011 Elsevier B.V.
Lenguage dc.language.iso en
Type of license dc.rights Attribution-NonCommercial-NoDerivs 3.0 Chile
Link to License dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/3.0/cl/
Source dc.source Microchemical Journal
Keywords dc.subject Cobalt
Keywords dc.subject Ferrozine
Keywords dc.subject Photoacoustic spectroscopy
Keywords dc.subject Solid phase spectroscopy
Título dc.title Determination of cobalt in water samples by photoacoustic spectroscopy with a solid-phase spectrophotometry approach using 3-(2-pyridyl)-5,6-bis(4-sulfophenyl)-1,2,4-triazine
Document type dc.type Artículo de revista
Cataloguer uchile.catalogador SCOPUS
Indexation uchile.index Artículo de publicación SCOPUS
uchile.cosecha uchile.cosecha SI
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