Investigation of amperometric detection of phosphate

Quintana, Josefina Calvo; Idrissi, Laila; Palleschi, Giuseppe; Albertano, Patrizia; Amine, Aziz; Rhazi, Mama El; Moscone, Danila

doi:10.1016/j.talanta.2003.11.040

Cited by 80 publications

(18 citation statements)

References 25 publications

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“…The electrochemical behavior of molybdate has been already reported and studied in details 24–26 many years ago. More recently, Calvo Quintana et al exploited the electrochemical behavior of molybdate to detect phosphate in environmental samples 27. Figure 1 reports the cyclic voltammetry obtained for the electrochemical mediator at different concentrations in the measurement medium (0.01 mol L −1 of HCl containing 0.1 mol L −1 KCl) using a carbon paste electrode as working electrode.…”

Section: Resultsmentioning

confidence: 99%

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na₂MoO₄ as Electrochemical Mediator

et al. 2012

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The complexing ability of molybdate vs. o‐diphenols has been exploited for their selective electrochemical detection. Graphite screen printed and carbon paste electrodes have been evaluated as electrochemical transducers for the selective mediated detection of o‐diphenol compounds in the presence of Na2MoO4. Immobilization of the mediator onto the electrode surface has also been achieved using different types of single and multiwall carbon nanotubes. The best sensor in terms of selectivity, sensitivity and stability was the Mo‐MW‐CNT‐NH2 modified electrode. Using the mediator either in solution or immobilized, detection of o‐diphenols with linearity in the ppm range was achieved. An amperometric flow injection analysis set‐up was used to detect the o‐diphenolic content of phenolic extracts obtained from olive oil samples.

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Section: Resultsmentioning

confidence: 99%

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na₂MoO₄ as Electrochemical Mediator

et al. 2012

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“…Some electrochemical methods have been reported to measure silicate and phosphate using heteropolymolybdates [16][17][18]. The orthophosphate amperometric detection was investigated by flow injection analysis by Harden and Nonidez [19] and by batch injection analysis by Quintana et al [20]. The amperometric detection was also used for phosphate determination with a bienzyme electrode [21].…”

Section: Introductionmentioning

confidence: 99%

Silicate electrochemical measurements in seawater: Chemical and analytical aspects towards a reagentless sensor

Lacombe

Garçon

Thouron

et al. 2008

Talanta

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International audienceFrom the study of molybdenum oxidation in aqueous solutions we developed a semi-autonomous method to detect silicate in aqueous samples. Molybdenum oxidation was used to form molybdate in acidic media. The silicomolybdic complex formed with silicate is detectable by amperometry or cyclic voltammetry. The new electrochemical method is in good agreement with the method conventionally used for environmental water silicate analysis. In the second stage, a completely reagentless method was developed using molybdate and proton produced during molybdenum oxidation. Reproducibility tests show a precision of 2.6% for a concentration of 100 [mu]mol L-1. This new method will be very suitable for the development of new autonomous silicate sensors easy to handle and without reagents. In this paper we present the analytical and chemical aspects necessary for a complete documentation of the method before the development of a new reagentless sensor

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“…It is in the range of 0.81 to1.45 mM PO 4 3-in adult human serum [3]. Various detection strategies for phosphate have been developed, which include phosphate ion selective electrodes, amperometry, chromatography, flurometry, colorimetry, spectroscopy and enzymatic biosensors [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Most manual and automated methods of phosphorus determination are based on the reaction of phosphate with an acidified molybdate reagent to yield phosphomolybdate heteropolyacid.…”

Section: Introductionmentioning

confidence: 99%

Glassy carbon electrode modified with hybrid films containing inorganic molybdate anions trapped in organic matrices of chitosan and ionic liquid for the amperometric sensing of phosphate at neutral pH

Berchmans

Karthikeyan

Gupta

et al. 2011

Sensors and Actuators B: Chemical

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. at neutral pH , hence would be applicable for phosphate analysis in biological samples. Unlike ICP-OES analysis which requires highly sophisticated and costly instrumentation, the proposed method involves simple and cheaper instrumentation requirements and is suitable for field measurements.

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Investigation of amperometric detection of phosphate

Cited by 80 publications

References 25 publications

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na₂MoO₄ as Electrochemical Mediator

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na₂MoO₄ as Electrochemical Mediator

Silicate electrochemical measurements in seawater: Chemical and analytical aspects towards a reagentless sensor

Glassy carbon electrode modified with hybrid films containing inorganic molybdate anions trapped in organic matrices of chitosan and ionic liquid for the amperometric sensing of phosphate at neutral pH

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Investigation of amperometric detection of phosphate

Cited by 80 publications

References 25 publications

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na2MoO4 as Electrochemical Mediator

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na2MoO4 as Electrochemical Mediator

Silicate electrochemical measurements in seawater: Chemical and analytical aspects towards a reagentless sensor

Glassy carbon electrode modified with hybrid films containing inorganic molybdate anions trapped in organic matrices of chitosan and ionic liquid for the amperometric sensing of phosphate at neutral pH

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Product

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Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na₂MoO₄ as Electrochemical Mediator

Selective Voltammetric Analysis of o‐Diphenols from Olive Oil Using Na₂MoO₄ as Electrochemical Mediator