Details

Autor(en) / Beteiligte

• do Nascimento Rocha, Sarah Adriana
• Dantas, Alaílson Falcão
• Jaeger, Helena Valli
• Costa, Antônio Celso Spínola
• Leão, Elsimar dos Santos
• Gonçalves, Mara Rúbia

Titel

Spectrofotometric determination of copper in sugar cane spirit using biquinoline in the presence of ethanol and Triton X-100

Ist Teil von

• Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 2008-12, Vol.71 (4), p.1414-1418

Ort / Verlag

England: Elsevier B.V

Erscheinungsjahr

2008

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• The present paper proposes a method 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 0.2–20.0 mg L −1 with a detection limit 0.05 mg L −1. The great advantages of the proposed methodology are the elimination of liquid–liquid extraction step and the use of toxic organics solvents, like dioxane, to dissolve the reagent.