Accurate concentration determination of anions nitrate, nitrite and chloride in minced meat using a voltammetric electronic tongue

Campos, Inmaculada; Masot, Rafael; Alcañíz, Miguel; Gil, Luisa Fernanda Muriel; Soto, Juán; Vivancos, José-Luis; García‐Breijo, Eduardo; Labrador, Roberto H.; Baviera, José Manuel Barat; Martínez‐Máñez, Ramón

doi:10.1016/j.snb.2010.06.028

Cited by 77 publications

(45 citation statements)

References 39 publications

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“…In the end, in order to guarantee a full contact of all the sensors, the overflowing resin of the metal sensor was sanded (Figure 1). The selection of the metal sensors used to develop the arrays has been made according to our previous experience [18][42] and papers published before [43] [44]. In addition, a calomel electrode has been used (Radiometer Analytical, XR 100) as reference electrode.…”

Section: Electrochemical Sensors (Electrodes)mentioning

confidence: 99%

Glyphosate detection with ammonium nitrate and humic acids as potential interfering substances by pulsed voltammetry technique

Gil

Laguarda-Miró

Camino

et al. 2013

Talanta

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ElsevierMartínez Gil, P.; Laguarda Miró, N.; Soto Camino, J.; Masot Peris, R. (2013) AbstractPulsed voltammetry has been used to detect and quantify glyphosate on buffered water in presence of ammonium nitrate and humic substances. Glyphosate is the most widely used herbicide active ingredient in the world. It is a non-selective broad spectrum herbicide but some of its health and environmental effects are still being discussed. Nowadays, glyphosate pollution in water is being monitored but quantification techniques are slow and expensive. Glyphosate wastes are often detected in countryside water bodies where organic substances and fertilizers (commonly based on ammonium nitrate) may also be present. glyphosate also forms complexes with humic acids so these compounds have also been taken into consideration. The objective of this research is to study the interference of these common pollutants in glyphosate measurements by pulsed voltammetry. The statistical treatment of the voltammetric data obtained lets us discriminate glyphosate from the other studied compounds and a mathematical model has been built to quantify glyphosate concentrations in a buffer despite the presence of humic substances and ammonium nitrate. In this model, the coefficient of determination (R 2 ) is 0.977 and the RMSEP value is 2.96x10 -5 so the model is considered statistically valid.

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Section: Electrochemical Sensors (Electrodes)mentioning

confidence: 99%

Glyphosate detection with ammonium nitrate and humic acids as potential interfering substances by pulsed voltammetry technique

Gil

Laguarda-Miró

Camino

et al. 2013

Talanta

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“…This is because the flow of the current through the dissolution is a function of the applied voltage and the chemical concentration in the dissolution. The measurements have been made with a device developed by the Institute of Molecular Recognition and Technological Development (IDM) called FraPlusMini [22], which is capable of running tests for Potentiometry [23], Amperometry [23,24], Pulse Voltammetry and Cyclic Voltammetry [25], and has been successfully used in food [26][27][28], water analyses [29] and also in the determination of environmental parameters [30]. The system consists of a software application that runs on a PC and electronic equipment.…”

Section: Electrochemical Measurement Using Pulse Voltammetrymentioning

confidence: 99%

Glyphosate detection by voltammetric techniques. A comparison between statistical methods and an artificial neural network

Laguarda-Miró¹,

Ferreira²,

García‐Breijo³

et al. 2012

Sensors and Actuators B: Chemical

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Glyphosate quantification methods are complex and expensive, and its control in natural water bodies is getting more important year after year. In order to find a new system that facilitates the detection of glyphosate, we present a comparison between two models to predict Glyphosate concentration in aqueous dissolutions. One of them is done by an Artificial Neural Network (ANN) embedded in a Microcontroller and the other one is done by statistic methods (Partial Least Squares) in a computer. From an analytical point of view, Voltammetric techniques have been selected to obtain electrochemical responses to different Glyphosate concentrations. In order to get them, a Voltammetry/Amperometry device designed by our research group and called FraPlus has been used. In this work we have selected two sensitive electrodes (Cobalt and Copper), ten different glyphosate concentrations and a train pulse made by nine different voltammetric pulses to build the models. The ANN developed model is able to properly relate data obtained by FraPlus and Glyphosate concentrations and the obtained value for regression coefficient (R) is 0.9998 and the PValue is 0.0. Taking into account these results, we propose this ANN model based in Voltammetric techniques working with Glyphosate concentrations in a buffer as an approach to Glyphosate detection in natural water bodies.

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“…), is the problematic reproducibility of the measurements. 6,7 These reproducibility problems can be caused by different factors:…”

mentioning

confidence: 99%

A study of the importance of the cell geometry in non-Faradaic systems. A new definition of the cell constant for conductivity measurement

Bataller

Gandía

García‐Breijo

et al. 2015

Electrochimica Acta

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ElsevierBataller Prats, R.; Gandía Romero, JM.; García Breijo, E.; Alcañiz Fillol, M.; Soto Camino, J. (2015). A study of the importance of the cell geometry in non-Faradaic systems. A new definition of the cell constant for conductivity measurement. Electrochimica Acta. 153(20):263-272. doi:10.1016Acta. 153(20):263-272. doi:10. /j.electacta.2014.A study of the importance of the cell geometry in non-Faradaic systems. A new definition of the cell constant for conductivity measurment. Abstract:A new definition for the electrochemical cell constant in conductivity measurements is presented in this paper. Electrochemical Impedance Spectroscopy and DC pulses measurements have been carried out in non-Faradaic conditions in order to evaluate the effects of the cell geometry. The results obtained demonstrate that conductivity measurements are affected not only by the electrodes surface and separation but also by the cross section of the electrochemical cell. In order to obtain a linear behavior of the resistance versus the distance between electrodes, the cross section of the cell should be equal to the electrodes surface. Differences between the cell cross section and the electrodes surface produce a heterogeneous distribution of the electric field that causes the non-linear behavior for low values of the electrodes separation. This study shows that the reproducibility in electronic tongue and humid electronic nose measurements can be improved by designing an electrochemical cell structure that warrants a homogeneous distribution of the electrical field, which results in a reduction of the detection threshold in these types of system.

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Accurate concentration determination of anions nitrate, nitrite and chloride in minced meat using a voltammetric electronic tongue

Cited by 77 publications

References 39 publications

Glyphosate detection with ammonium nitrate and humic acids as potential interfering substances by pulsed voltammetry technique

Glyphosate detection with ammonium nitrate and humic acids as potential interfering substances by pulsed voltammetry technique

Glyphosate detection by voltammetric techniques. A comparison between statistical methods and an artificial neural network

A study of the importance of the cell geometry in non-Faradaic systems. A new definition of the cell constant for conductivity measurement

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