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	Provedor de dados BJPS (1) Autor Cavalheiro,Éder Tadeu Gomes (1) Fatibello-Filho,Orlando (1) Suarez,Willian Toito (1) Vicentini,Fernando Campanhã (1) Palavra-chave AgSCN (1) Captopril/determination (1) Flow-injection (1) Polyurethane resin (1) Solid-phase reactor (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2012 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Flow-injection spectrophotometric determination of captopril in pharmaceutical formulations using a new solid-phase reactor containing AgSCN immobilized in a polyurethane resin BJPS Vicentini,Fernando Campanhã; Suarez,Willian Toito; Cavalheiro,Éder Tadeu Gomes; Fatibello-Filho,Orlando. A simple flow-injection analysis procedure was developed for determining captopril in pharmaceutical formulations employing a novel solid-phase reactor containing silver thiocyanate immobilized in a castor oil derivative polyurethane resin. The method was based on silver mercaptide formation between the captopril and Ag(I) in the solid-phase reactor. During such a reaction, the SCN- anion was released and reacted with Fe3+, which generated the FeSCN2+ complex that was continuously monitored at 480 nm. The analytical curve was linear in the captopril concentration range from 3.0 × 10-4 mol L-1 to 1.1 × 10-3 mol L-1 with a detection limit of 8.0 × 10-5 mol L-1. Recoveries between 97.5% and 103% and a relative standard deviation of 2% for a solution... Tipo: Info:eu-repo/semantics/article Palavras-chave: AgSCN; Captopril/determination; Flow-injection; Polyurethane resin; Solid-phase reactor. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502012000200016 Registros recuperados: 1 Primeira ... 1 ... Última

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