Producción Científica Profesorado

Application of an Activated Carbon-Based Support for Magnetic Solid Phase Extraction Followed by Spectrophotometric Determination of Tartrazine in Commercial Beverages.



Guevara Lara, Alfredo

2015

Rodríguez, J. A., Escamilla-Lara, K. A., Guevara-Lara, A., Miranda, J. M., Páez-Hernández, M. E. Application of an Activated Carbon-Based Support for Magnetic Solid Phase Extraction Followed by Spectrophotometric Determination of Tartrazine in Commercial Beverages. International Journal of Analytical Chemistry, 2015, Vol. 2015, p. 1-8, ISSN 1687-8760


Abstract


A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methanol. The tartrazine eluted from the magnetic support was determined by spectrophotometry. Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30?mg?L?1, with a limit of detection of 1?mg?L?1. The method was validated by comparing the results with those obtained by HPLC. A precision of 5.0% was obtained in all cases and no significant differences were observed .



Producto de Investigación




Artículos relacionados

Bioacumulación y daños genotóxicos en Pez Cebra (Danio rerio) por arsénico en aguas de Zimapán, Hida...

Nucleation and Growth Kinetics of Electrodeposited Sulfate-Doped Polypyrrole: Determination of the D...

Hydrogen bond studies in substituted N-(2-hydroxyphenyl)--2-[(4-methylbenzenesulfonyl)amino]acetamid...

Theoretical and Experimental Study of Cobalt Nucleation and Growth onto Gold Substrate with Differen...

Cobalt Electrodeposition Process from Electrolytic Baths based on CoSO4 and (NH4)2SO4. Influence of ...

Analysis of the experimental pressuretemperature behavior in the isotropicnematic phase transition f...

Evaluación de Esteroides Aromáticos como Indicadores de Madurez Térmica en Extractos de Roca

THEORETICAL STUDY ON THE MODIFICATION OF ACTIVE SITES IN GOLD SURFACES MODELED AS FINITE CLUSTERS: I...

Do Spiroarsoranes Exhibit Polytopal Equilibrium in Solution?

Nucleation and growth of cobalt onto different substrates: Part I. Underpotential deposition onto a ...