Producción Científica Profesorado

Magnetic solid phase extraction based on fullerene and activated carbon adsorbents for determination of azo dyes in water samples by capillary electrophoresis.



Rodríguez Ávila, José Antonio

2016

J.A. Rodriguez, I.S. Ibarra*, J.M. Miranda, E. Barrado, E. M. Santos. Magnetic solid phase extraction based on fullerene and activated carbon adsorbents for determination of azo dyes in water samples by capillary electrophoresis. Analytical Methods 8 (2016) 8466-8473DOI: 10.1039/C6AY02631A


Abstract


A magnetic solid phase extraction method coupled to capillary electrophoresis for the simultaneous determination of three azo dyes (sunset yellow, allura red and tartrazine) in wastewater samples was proposed. The method employs the dispersion of magnetic adsorbents in the sample. Variables involved in the retention?elution procedures were optimized using a simplex centroid design. The optimal conditions were: an adsorbent composition of magnetite?activated carbon?fullerene (10:0.59:0.41), a sample pH of 4.0, and a sample volume (?l):weight of adsorbent (mg) ratio of 0.01. Under optimal conditions, a linear range was obtained from 3.0?40.0 mg l?1 with limits of detection ranging from 1.0?2.0 mg l?1. The average recoveries of each dye at two spiked levels (10 and 25 mg l?1) ranged from 95?106% with relative standard deviations of less than 10% in all cases. The proposed method was applied to analyze wastewater samples from different locations. Two samples gave positive responses to the presence of tartrazine residues. The method proposed offers advantages in terms of simplicity, sensitivity, high efficiency, low cost, and short analysis time, making it an alternative for the analysis of azo dyes in water samples and other complex matrices.



Producto de Investigación




Artículos relacionados

Validation of a tubular bismuth film amperometric detector: Determination of diclofenac sodium by mu...

Determination of oxytetracycline in milk samples by polymer inclusion membrane separation coupled to...

Prevalence and Antimicrobial Resistance Patterns of Salmonella from Different Raw Foods in Mexico

Design and Construction of Solid State Ag/AgCl Reference Electrodes Through Electrochemical Depositi...

Determination of tetracyclines in milk samples by magnetic solid phase extraction flow injection ana...

Estudio de las Interacciones Ácido Húmico-Metales Pesados y Determinación de sus Constantes de Estab...

Silver and Silver Chloride Electrodeposits, an Alternative in the Construction of Ag/AgCl Solid Elec...

Kinetics of Polypyrrole Films Doped with Sulphate Ions Electrodeposited Over Graphite - Epoxy Resin ...

Development of a novel composite sensor based on doped pyrrole selective to nitrate ions

Chemical studies of anthocyanins: A review