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Spectrophotometic flow injection determination of lead in port wine using in-li...
Lopes, Teresa I. M. S.; Rangel, António O. S. S.; Sartini, Raquel B.; Zagatto, Elias A. G.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 compa...
Data: 1996
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Origem: Veritati - Repositório Institucional da Universidade Católica Portuguesa
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