Herein we describe a novel reagentless paper-based electrochemical phosphate sensor, manufactured with a simple and inexpensive approach. By following three easy steps, consisting of wax patterning, paper chemical modification, and electrode screen-printing, the filter paper provides an effective electroanalytical platform to sense phosphate ions in standard solutions and real samples (river water). The electrochemical properties of the paper-based platform were evaluated, firstly, by using ferricyanide as a redox mediator, proving no analyte-entrapment due to the cellulose lattice. Then, the reference colorimetric method for phosphate ions, which is based on the formation of phosphomolybdic complex, was successfully adapted to a reagentless electrochemically paper-based platform. This novel and highly sustainable configuration readily allows for the determination of phosphate ions with high reproducibility and long storage stability, achieving a detection limit of 4 μM over a wide linear range up to 300 μM. This in-house approach would be able to generically develop an affordable in situ and user-friendly sensing device without the addition of any reagent, to be applied for a broad range of analytes.

Cinti, S., Talarico, D., Palleschi, G., MOSCONE DINIA, D., Arduini, F. (2016). Novel reagentless paper-based screen-printed electrochemical sensor to detect phosphate. ANALYTICA CHIMICA ACTA, 919, 78-84 [10.1016/j.aca.2016.03.011].

Novel reagentless paper-based screen-printed electrochemical sensor to detect phosphate

CINTI, STEFANO;TALARICO, DARIA;PALLESCHI, GIUSEPPE;MOSCONE DINIA, DANILA;ARDUINI, FABIANA
2016-05-05

Abstract

Herein we describe a novel reagentless paper-based electrochemical phosphate sensor, manufactured with a simple and inexpensive approach. By following three easy steps, consisting of wax patterning, paper chemical modification, and electrode screen-printing, the filter paper provides an effective electroanalytical platform to sense phosphate ions in standard solutions and real samples (river water). The electrochemical properties of the paper-based platform were evaluated, firstly, by using ferricyanide as a redox mediator, proving no analyte-entrapment due to the cellulose lattice. Then, the reference colorimetric method for phosphate ions, which is based on the formation of phosphomolybdic complex, was successfully adapted to a reagentless electrochemically paper-based platform. This novel and highly sustainable configuration readily allows for the determination of phosphate ions with high reproducibility and long storage stability, achieving a detection limit of 4 μM over a wide linear range up to 300 μM. This in-house approach would be able to generically develop an affordable in situ and user-friendly sensing device without the addition of any reagent, to be applied for a broad range of analytes.
5-mag-2016
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/01 - CHIMICA ANALITICA
English
Con Impact Factor ISI
paper-based electroanalytical platform; wax-printing; screen-printed electrodes; reagentless; phosphate; user-friendly method
Cinti, S., Talarico, D., Palleschi, G., MOSCONE DINIA, D., Arduini, F. (2016). Novel reagentless paper-based screen-printed electrochemical sensor to detect phosphate. ANALYTICA CHIMICA ACTA, 919, 78-84 [10.1016/j.aca.2016.03.011].
Cinti, S; Talarico, D; Palleschi, G; MOSCONE DINIA, D; Arduini, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/170739
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