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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/5936

Title: Spectrofotometric determination of copper in sugar cane spirit using biquinoline in the presence of ethanol and Triton X-100
Other Titles: Spectrochimica acta part a-molecular and biomolecular spectroscopy
Authors: Rocha, Sarah Adriana do Nascimento
Dantas, Alailson Falcão
Jaeger, Helena Valli
Costa, Antonio Celso Spinola
Leão, Elsimar dos Santos
Gonçalves, Mara Rúbia
Keywords: Copper;Cachaça;Spectrophotometry
Issue Date: 2008
Abstract: The present paper proposes amethod for molecular spectrophotometric determination of copper in sugar cane spirits. The copper(I) reacts with biquinoline forming a pink complex with maximum absorption at 545 nm. The reaction occurs in the presence of hydroxylamine, ethanol and Triton X-100 tensioative. Determination of copper is possible in a linear range 0.2–20.0mgL−1 with a detection limit 0.05mgL−1. The great advantages of the proposed methodology are the elimination of liquid–liquid extraction step vand the use of toxic organics solvents, like dioxane, to dissolve the reagent.
Description: Acesso restrito: Texto completo. p. 1414-1418
URI: http://www.repositorio.ufba.br/ri/handle/ri/5936
ISSN: 1386-1425
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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