Producción Científica Profesorado

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



Alvarez Romero, Giaan Arturo

2006

Alvarez Romero G. A., Galán Vidal C., Palomar-Pardavé M. E., Ramírez Silva M. T.Development of a novel composite sensor based on doped pyrrole selective to nitrate ions, ECS Transactions, 2006,Vol. 3, Núm. 10, ISSN 1938-5862


Abstract


In this work the results obtained on the manufacturing andevaluation of a novel sensor built with a composite material,highly selective to nitrate ions using doped polypyrrole as arecognition agent, are presented. When the ratio recognitionagent-graphite was optimized to 1:1 the sensitivities foundclosely approached nernstian behaviour. The response times weresmaller than 20 s. Batch characterization of the sensordisplayed a sensitivity of 57.10 mV/decade of nitrate ionactivity and a detection limit of 5.37 x 10-5 M, which arecomparable to those reported for commercial sensors. Theevaluation of the selectivity coefficients showed high affinityto nitrate ions, superior to that of other commercial sensors.The composite material gives the sensor a prolonged servicelife. Coupling the sensor and a solid state, composite-type,reference electrode to a flow injection analytical system, FIA,permitted to achieve an effective overall assessment of the system.



Producto de Investigación




Artículos relacionados

Magnetic solid phase extraction based on phenyl silica adsorbent for the determination of tetracycli...

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...

Sequential Injection Spectrophotometric Determination of Diclofenac in Urine and Pharmaceutical Form...

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

Development of a Polypyrrole Selective Membrane For The Potentiometric Quantification of Saccharinat...

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

Development of a Chloride Ion-Selective Solid State Sensor Based on Doped Polypyrrole-Graphite-Epoxy...

Potentiometric quantification of saccharin by using a selective membrane formed by pyrrole electropo...

cis-Palladium(II) complexes of derivatives of di-(2-pyridyl)methane: Study of the influence of the b...

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