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https://repositorio.ufba.br/handle/ri/5936
metadata.dc.type: | Artigo de Periódico |
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 |
metadata.dc.creator: | Rocha, Sarah Adriana do Nascimento Dantas, Alailson Falcão Jaeger, Helena Valli Costa, Antonio Celso Spinola Leão, Elsimar dos Santos Gonçalves, Mara Rúbia |
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. |
Keywords: | Copper Cachaça Spectrophotometry |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/5936 |
Issue Date: | 2008 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
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