Chelidamic Acid as a New Eluent for the Determination of Fe(II) and Fe(III) Species and Other Metals by High Performance Chelation Ion Chromatography

Autor(es)

Dias, Jailson C. ^[1] ; Kubota, Lauro T. ^[1] ; Nesterenko, Pavel N. ^[2] ; Haddad, Paul R. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, UNICAMP, Inst Chem, Dept Analyt Chem, BR-13083970 Campinas, SP - Brazil

^[2] Univ Tasmania, Sch Chem, ACROSS, Hobart, Tas 7001 - Australia

• Tipo de documento: Artigo Científico
• Fonte: Chromatographia; v. 75, n. 15-16, p. 867-873, AUG 2012.
• Citações Web of Science: 6

Resumo

The chelidamic acid (CDA) is proposed as a new eluent reagent in high performance chelation ion chromatography for the simultaneous isocratic separation of Fe2+ and Fe3+, Mn2+, Pb2+, Cd2+, Zn2+, Co2+ and Cu2+ on an iminodiacetic acid functionalized silica column 150 x 4.0 mm i.d., with an optimized eluent composed of 2 mmol L-1 CDA, 3 mmol L-1 triethanolamine, 12 mmol L-1 HCl, and 50 % v/v of methanol at flow rate of 0.5 mL min(-1). Post-column reaction with 4-(2-Pyridylazo)resorcinol (PAR) was used for sensitive spectrophotometric detection at 510 nm. The developed method is suitable for the quantitative speciation of iron as well as for the determination of other metals. The applicability of this method to the direct analysis of fuel ethanol was demonstrated. (AU)

• Processo FAPESP: 10/05015-8 - Desenvolvimento e validação de método cromatográfico por quelação de íons com detecção amperométrica pulsada para a determinação sequencial de Cd, Co, Cu, Fe, Mn, Ni, Pb e Zn em biodiesel
• Beneficiário: Jailson Cardoso Dias
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado