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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

Authordc.contributor.authorSaavedra, Renato 
Authordc.contributor.authorSoto, César 
Authordc.contributor.authorYañez, Jorge 
Authordc.contributor.authorToral Ponce, María 
Admission datedc.date.accessioned2018-12-20T15:10:30Z
Available datedc.date.available2018-12-20T15:10:30Z
Publication datedc.date.issued2011
Cita de ítemdc.identifier.citationMicrochemical Journal, Volumen 98, Issue 2, 2018, Pages 220-224
Identifierdc.identifier.issn0026265X
Identifierdc.identifier.other10.1016/j.microc.2011.02.003
Identifierdc.identifier.urihttp://repositorio.uchile.cl/handle/2250/158209
Abstractdc.description.abstractThis 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.
Lenguagedc.language.isoen
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
Sourcedc.sourceMicrochemical Journal
Keywordsdc.subjectCobalt
Keywordsdc.subjectFerrozine
Keywordsdc.subjectPhotoacoustic spectroscopy
Keywordsdc.subjectSolid phase spectroscopy
Títulodc.titleDetermination 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 typedc.typeArtículo de revista
Catalogueruchile.catalogadorSCOPUS
Indexationuchile.indexArtículo de publicación SCOPUS
uchile.cosechauchile.cosechaSI


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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile