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

Do Spiroarsoranes Exhibit Polytopal Equilibrium in Solution?

Análisis del Comportamiento Presión-Temperatura en la Transición Isotrópico-Nemático del p-Azoxianis...

Characterization of Main Anthocyanins Extracted from Pericarp Blue Corn by MALDI-ToF MS

Nucleation and growth of cobalt onto different substrates: Part II. The upd-opd transition onto a go...

Cobalt electrodeposition onto highly oriented pyrolytic graphite (HOPG) electrode from ammonium sulf...

Mercury Ions Removal from Aqueous Solution Using an Activated Composite Membrane

Synthesis, Characterization and Catalytic Activity of Supported NiMo Catalysts

Efecto de la composición del soporte sobre las estructuras superficiales de óxidos de níquel y molib...

Quantum chemical study of the electrochemical reduction of the [Co(H2O)6]2+ and [Co(NH3)5(H2O)]2+ io...

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