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Extraction-spectrophotometric determination of iron as the ternary tris(1,10-phenanthroline)-iron(II)-picrate complex

Authordc.contributor.authorMorales, Alfonso 
Authordc.contributor.authorInés Toral, Alfonso 
Admission datedc.date.accessioned2018-12-20T15:05:03Z
Available datedc.date.available2018-12-20T15:05:03Z
Publication datedc.date.issued1985
Cita de ítemdc.identifier.citationAnalyst, Volumen 110,
Identifierdc.identifier.issn13645528
Identifierdc.identifier.issn00032654
Identifierdc.identifier.other10.1039/AN9851001445
Identifierdc.identifier.urihttp://repositorio.uchile.cl/handle/2250/157642
Abstractdc.description.abstractA highly sensitive extraction-spectrophotometric method has been developed for the determination of iron based on the formation of a ternary complex with 1,10-phenanthroline as a primary ligand and picrate as a counter ion. The slightly soluble red-orange complex obtained in the pH range 2-9 is easily and completely extracted into 1,2-dichloroethane. The absorbance is measured directly in the organic phase at 510 nm against a reagent blank. Beer’s law is obeyed over the concentration range 0.1-3.6 μg ml<sup>–1</sup>, corresponding to 0.01–0.36 μg ml<sup>–1</sup> of iron in the aqueous solution. The apparent molar absorptivity and Sandell’s sensitivity were 1.3 × 10<sup>5</sup> mol<sup>–1</sup> cm<sup>–1</sup> and 0.43 ng cm<sup>–2</sup>, respectively. The interference of various ions was examined and the serious interferences arising from common metal ions, which are sometimes unavoidable in other methods, were not observed in the proposed method. © Royal Society of Chemistry.
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.sourceAnalyst
Keywordsdc.subjectExtraction-spectrophotometry
Keywordsdc.subjectIron determination
Keywordsdc.subjectIron(ll)-phenanthroline-picrate complex
Títulodc.titleExtraction-spectrophotometric determination of iron as the ternary tris(1,10-phenanthroline)-iron(II)-picrate complex
Document typedc.typeArtículo de revista
Catalogueruchile.catalogadorSCOPUS
Indexationuchile.indexArtículo de publicación SCOPUS
uchile.cosechauchile.cosechaSI


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