Electrochemical impedance spectroscopy of diluted solutions of Bisphenol A

Méndez, Manuel A.; Suárez, Marco Fidel; Cortés, María Teresa González

doi:10.1016/j.jelechem.2006.03.010

Cited by 9 publications

(6 citation statements)

References 32 publications

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“…This indicated the occurrence of a fouling phenomenon, arising from the oxidative polymeric products of BPA, which resulted in blockade of other BPA molecules from reaching the sensing layer. A similar behavior of anodic oxidation of BPA was observed in previous reports (Kuramitz et al 2001;Tanaka et al 2002;Huang 2005;Méndez et al 2006;Vega et al 2007;Murugananthan et al 2008;H.-S. Yin et al 2009;H. Yin, Cui, et al 2010a-c).…”

supporting

confidence: 87%

“…Yin, Cui, et al 2010a-c). Furthermore, when multiple cyclic scans were recorded, the oxidation peak was observed only during the first scan for all electrodes (data not shown) according to previous reports (Kuramitz et al 2001;Méndez et al 2006). This indicated the occurrence of a fouling phenomenon, arising from the oxidative polymeric products of BPA, which resulted in blockade of other BPA molecules from reaching the sensing layer.…”

supporting

confidence: 77%

“…For the modified electrodes in this work, oxidation peaks of BPA were observed between 730-770 mV (vs. Ag=AgCl). These potentials are better than those of some sensors reported in the literature such as the Pt electrode (1.250 V vs. Ag=AgCl) (supporting electrolyte NaClO 4 in acetonitrile) (Méndez et al 2006), Si=boron-doped electrode (1.200 V vs SCE) (Murugananthan et al 2008) and carbon paste electrode (0.890 V vs Ag=AgCl) (Huang 2005), but it was worse than that reported for CNT=GCE (0.590 V vs. Ag=AgCl) (H. Yin, Ciu, et al 2010c) in near neutral pH conditions. The fact that no reduction peak of BPA was observed at both of the modified and the unmodified GCE is in agreement with the previous works (Tanaka et al 2002;Huang 2005;Méndez et al 2006;Vega et al 2007;Murugananthan et al 2008;H.-S. Yin et al 2009;H.…”

mentioning

confidence: 61%

“…Yin, Zhou, Xu, et al 2010). The measurement of BPA-adsorption related charge transfer resistance of an electrode (Méndez, Suárez, and Cortés 2006) is also an interesting approach in order to dodge complication arising from electrode fouling by oxidative products of BPA. In the absence of sufficient selectivity, electrochemical BPA sensors were also exploited as detectors in tandem with liquid-chromatography (Inoue et al 2000;Vega et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Hydroxy-Iron/β-cyclodextrin-Film Amperometric Sensor for the Endocrine Disruptor Substance Bisphenol-A in an Aqueous Medium with Reduced Fouling Effects

et al. 2011

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Amperometric sensors for the detection of bisphenol A (BPA) were developed by drop coating an amorphous hydroxy iron product (FeOx) and its composites with b-cyclodextrin (BCD) on the surface of glassy carbon electrodes (GCE). The composite materials were prepared in an aqueous medium by adding a stoichiometric mixture of iron (II) and iron (III) ions into a strongly alkaline solution of BCD under reflux at 90 C. The electrochemical oxidation behavior and detection of BPA at the modified electrode was investigated by using cyclic voltammetry. The potentials (vs. Ag/AgCl) for BPA-oxidation at the modified electrodes (727-771 mV) were significantly lower than observed for the bare GCE (834 mV) in aq. KCl. The lowest oxidation potential was observed for the iron oxide film without BCD. However, the analytical figures of merit as an amperometric sensor based on cyclic voltammetric peak measurements were the best in the case of the iron oxide which was synthesized in the presence of BCD. Its two orders of magnitude of linearity, sub-micromolar detection limit, and reproducibility within experimental error make this sensor potentially exploitable for real sample analysis. The significantly shorter linearity range of the bare GCE indicated that the iron oxide product and its composites with BCD were less prone to passivation by BPA oxidation products. Application of the sensor in a real sample matrix was also demonstrated successfully using ''Stoney Ginger Beer samples'' spiked with a saturated aq. solution of BPA. The recovery rate was 100%.

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supporting

confidence: 87%

supporting

confidence: 77%

mentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hydroxy-Iron/β-cyclodextrin-Film Amperometric Sensor for the Endocrine Disruptor Substance Bisphenol-A in an Aqueous Medium with Reduced Fouling Effects

et al. 2011

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“…Impedimetry is a nondestructive transduction technique developed based on the EIS in sensor technology to detect organic molecules [10], biological species [11], and active [12] or inactive ions [13]. The method has been based on the diffusion effect of soluble mediators [14], induced conductivity or resistivity in the modified surface against the probe redox reaction by means of blocking [11], or complexing [12,13] behaviors of the modified surface.…”

Section: Introductionmentioning

confidence: 99%

One-impedance for one-concentration impedimetry as an electrochemical method for determination of the trace zirconium ion

Shervedani

Bagherzadeh

Sabzyan

et al. 2009

Journal of Electroanalytical Chemistry

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Impedance spectroscopy of N‐substituted oligo‐oxyethylene polypyrrole films

Cihaner

Önal

2008

J of Applied Polymer Sci

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The electrochemical properties of neutral (dedoped) and oxidized (doped) poly(1,11-bis(1,1-pyrrole)-3,6,9-trioxaundecane) (poly-I) film electrodes were investigated using cyclic voltammetry and electrochemical impedance spectroscopy (EIS) techniques. Poly-I was deposited on glassy carbon electrode (GCE) from acetonitrile solution containing 5.0 3 10 23 M 1,11-bis(1,1-pyrrole)-3,6,9-trioxaundecane (I) and 0.1M LiClO 4 supporting electrolyte. Doped poly-I exhibits a single semicircle in its complex-capacitance plots, indicating a single dominant ion transport process, together with high capacitance values. These features make this polymer film a candidate for an energy storage material. Also, poly-I can be a candidate as a sensory material for the detection of Ag 1 based on impedance parameters.

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Electrochemical impedance spectroscopy of diluted solutions of Bisphenol A

Cited by 9 publications

References 32 publications

Hydroxy-Iron/β-cyclodextrin-Film Amperometric Sensor for the Endocrine Disruptor Substance Bisphenol-A in an Aqueous Medium with Reduced Fouling Effects

Hydroxy-Iron/β-cyclodextrin-Film Amperometric Sensor for the Endocrine Disruptor Substance Bisphenol-A in an Aqueous Medium with Reduced Fouling Effects

One-impedance for one-concentration impedimetry as an electrochemical method for determination of the trace zirconium ion

Impedance spectroscopy of N‐substituted oligo‐oxyethylene polypyrrole films

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