Spectrophotometic flow injection determination of lead in Port wine using in-line ion-exchange concentration

Teresa I.M.S. Lopes, António O.S.S. Rangel, Raquel P. Sartini, Elias A.G. Zagatto

Resultado de pesquisarevisão de pares

12 Citações (Scopus)

Resumo

A flow injection system with in-line ion exchange is proposed for the spectrophotometric determination of lead in Port wine. A Chelex-100 resin mini-column (200-400 mesh) is used for lead concentration, and the chromogenic reaction is based on the formation of a ternary complex between lead, Malachite Green and iodide. Forty-five digested wine samples can be run per hour (25-500 μg l-1 Pb) and results are comparable to those obtained by ETAAS. Other features are the measurement precision (RSDs lower than 2.6%), a detection limit of 12 μg l-1 and a sampling rate of 45 h-1.

Idioma originalEnglish
Páginas (de-até)1047-1050
Número de páginas4
RevistaAnalyst
Volume121
Número de emissão8
DOIs
Estado da publicaçãoPublicado - ago. 1996

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