2009
DOI: 10.1590/s0100-40422009000900044
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Efeito da acidez e de modificadores orgânicos na determinação de metilxantinas: um experimento de cromatografia liquida de alta eficiência (CLAE) empregando otimização uni e multivariada

Abstract: Recebido em 10/11/08; aceito em 24/5/09; publicado na web em 19/11/09 THE ROLE OF ACIDITY AND ORGANIC MODIFIERS IN THE METHYLXANTHINES DETERMINATION: A HPLC EXPERIMENT. In this work a new experiment using HPLC is proposed in order to explore the role of acidity and the organic modifiers in the determination of methylxanthines in tea and coffee. Multivariate and univariate optimizations of the experimental conditions were used.Keywords: methylxanthines; HPLC; caffeine. INTRODUÇÃOAté o final da década de 70 a cr… Show more

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