Flow-Injection Analysis with Multiple-Pulse Amperometry for Simultaneous Determination of Paracetamol and Naproxen Using a Homemade Flow Cell for Screen-Printed Electrodes

Stefano, Jéssica S.; Montes, Rafael Marangoni; Richter, Eduardo M.; Muñoz, Rodrigo A.A.

doi:10.5935/0103-5053.20140006

Cited by 16 publications

(23 citation statements)

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“…Decrease in the overpotential of electrochemical oxidation reactions, increase in the electrode active surface area, and anti-fouling properties of electrodes are the main advantages reached after electrode modification with CNTs [31]. These properties were obtained for NPX detection reported in previous studies using CNTs [27][28][29]. However, to the best of our knowledge, there are no reports on the use of CNTs for the electrochemical sensing of IBF.…”

Section: Introductionmentioning

confidence: 91%

“…The electrochemical oxidation of IBF was investigated at a boron-doped diamond electrode (BDDE) after anodic treatment and its oxidation occurred at around +1.7 V vs. Ag/AgCl (saturated KCl) using square-wave voltammetry [21] and amperometric detection in a flow-injection analysis (FIA) system [22]. NPX was detected on unmodified platinum [23], BDDE [24], glassy-carbon A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 4 electrodes [25], and on modified electrodes with dysprosium nanowires [26], carbon nanotubes (CNTs) [27,28] and the composite ZnO attached to CNTs [29].…”

Section: Introductionmentioning

confidence: 99%

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Size effects of multi-walled carbon nanotubes on the electrochemical oxidation of propionic acid derivative drugs: Ibuprofen and naproxen

Montes

Lima

Cunha

et al. 2016

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Size effects of multi-walled carbon nanotubes on the electrochemical oxidation of propionic acid derivative drugs: Ibuprofen and naproxen

Montes

Lima

Cunha

et al. 2016

Journal of Electroanalytical Chemistry

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“…Consequently, the electrochemical oxidation of AC is quite similar to oxidation of other related aminophenols and involves two electrons and two protons transfer generating NAPQI (Fig. S7, Supporting Information) [31]. From the recorded CVs, the ΔE p values and consequently the k s values of AC/NAPQI redox system on fabricated films were estimated.…”

Section: Electrochemical Performance Of B-mwcnts and Mwcnts Towards Amentioning

confidence: 99%

Application of multi-walled carbon nanotubes modified with boron oxide nanoparticles in electrochemistry

Tsierkezos

Ritter

Thaha

et al. 2015

Ionics

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Multi-walled carbon nanotubes modified with boron oxide nanoparticles (B-MWCNTs) were synthesized onto oxidized silicon substrate upon decay of ethyl alcohol and boric acid in presence of catalyst by means of chemical vapor deposition technique. The B-MWCNTs were characterized using scanning electron microscopy and transmission electron microscopy in combination with electron energy loss spectroscopy. The B-MWCNTs were electrochemically studied using ferrocyanide/ferricyanide, [Fe(CN) 6 ] 3−/4− redox system in potassium chloride solution. Furthermore, the response of B-MWCNTs towards oxidation of acetaminophen (AC) to N-acetyl-pquinoneimine (NAPQI) was also studied in phosphate buffer solution (pH 7.0). The effect of boron oxide nanoparticles on electrochemical response of B-MWCNTs was probed. Therefore, B-MWCNTs were treated with hydrochloric acid for elimination of boron oxide nanoparticles and their electrochemical response towards [Fe(CN) 6 ] 3−/4− and AC/NAPQI redox systems was studied. The results demonstrate the strong influence of boron oxide nanoparticles on electrochemical response of B-MWCNTs.

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“…Moreover, FIA-MPA systems have been used for the simultaneous determination of different analytes and, with the application of an appropriate waveform of potentials on a simple working electrode, allow the determination of two analytes without requiring sophisticated prior sample treatment, separation of the analytes on a chromatographic column or even chemometric treatments [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of antihypertensive drugs by flow injection analysis using multiple pulse amperometric detection with a cathodically pretreated boron-doped diamond electrode

Lourenção

Medeiros

Fatibello‐Filho

2015

Journal of Electroanalytical Chemistry

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A flow injection analysis (FIA) and multiple pulse amperometric detection (MPA) using a cathodically pretreated boron-doped diamond electrode (CPT-BDD) were employed for simultaneous determination of the antihypertensive drugs hydrochlorothiazide (HTZ) and enalapril (ENP). A dual-potential waveform as a function of time, previously optimized, was used: E det.1 = +1.50 V / 150 ms (pulse potential at which HTZ was oxidized) and E det.2 = +1.80 V / 150 ms (pulse potential at which oxidation of both analytes -HTZ and ENP -occurs). The analytical curves presented good linearity from 0.40 to 8.00 μmol L −1 for HTZ and from 0.03 to 1.00 μmol L −1 for HTZ, and the detection limits were 0.20 μmol L −1 for HTZ and 0.01 μmol L −1 for ENP. The proposed flow method presented an analytical frequency of 89 determinations per hour, good precision and accuracy, was successfully applied to the simultaneous determination of HTZ and ENP in pharmaceutical samples and the results obtained using the FIA-MPA method were in agreement with those obtained using a comparative method (HPLC) at a 95% confidence level.

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Flow-Injection Analysis with Multiple-Pulse Amperometry for Simultaneous Determination of Paracetamol and Naproxen Using a Homemade Flow Cell for Screen-Printed Electrodes

Cited by 16 publications

References 0 publications

Size effects of multi-walled carbon nanotubes on the electrochemical oxidation of propionic acid derivative drugs: Ibuprofen and naproxen

Size effects of multi-walled carbon nanotubes on the electrochemical oxidation of propionic acid derivative drugs: Ibuprofen and naproxen

Application of multi-walled carbon nanotubes modified with boron oxide nanoparticles in electrochemistry

Simultaneous determination of antihypertensive drugs by flow injection analysis using multiple pulse amperometric detection with a cathodically pretreated boron-doped diamond electrode

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