Determination Of Acetaminophen Research Articles

A novel composite electrode based on graphene oxide / MnO 2 :h‐MoO 3 particles for square wave voltammetric determination of acetaminophen

A novel composite electrode was developed based on graphene oxide (GO) / MnO <sub>2</sub>:h‐MoO <sub>3</sub> nanocomposite for sensitive and selective voltammetric detection of acetaminophen (ACP). The composite electrode materials were characterized using X‐Ray photoelectron spectroscopy (XPS), X‐Ray Diffraction (XRD), scanning electron microcopy (SEM), electrochemical impedance spectroscopy (EIS) and cyclic voltammetric (CV) techniques. In the optimum conditions, the oxidation peak current ( <i>I<sub>pa</sub></i>) of ACP was increased linearly with its concentration over two linear ranges from 0.06 to 10.0 µmol L <sup>−1</sup> and 20.0 to 80.0 µmol L <sup>−1</sup> with a detection limit of 0.0133 μmol L <sup>−1</sup>. Due to its higher selectivity and long term stability, the composite electrode was applied to the detection of ACP in pharmaceutical formulations.

Anthraquinone/activated carbon electrochemical sensor and its application in acetaminophen analysis.

Acetaminophen (AC) can inhibit the synthesis of prostaglandins in the body, and has antipyretic and analgesic effects. In this paper, a two-step microwave impregnation method was used to prepare anthraquinone (AQ)-doped carbon composite, which were applied to the surface modification of glassy carbon electrodes (GCE) for the determination of acetaminophen (AC) using differential pulse voltammetry (DPV). The composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman and Fourier infrared spectroscopy (FT-IR). The results showed that anthraquinone was successfully modified on the surface of activated carbon. The peak current of AC increased with its concentration in the range of 0.1μM to 700μM (R2 = 0.998) and a detection limit of 0.05μM was obtained with 20%AQ doped carbon electrochemical sensor (20%AQ-C/GCE). Electrochemical Impedance Spectroscopy (EIS) test results indicated that the charge transfer resistance (Rct) of 20%AQ-C/GCE is only the one-fourth of that of bare GCE. The proposed 20%AQ-C/GCE sensor has good stability, reproducibility and selectivity for the detection of AC. The sensor is also suitable for the detection of real samples, indicating its good practicality.

Tetragonal arranged BiOCl interconnected with functionalized carbon tubes for a sensitive determination of Acetaminophen

Acetaminophen (AAP) is well recognized as a pharmaceutical agent but prolonged consumption of AAP causes serious health issues for human beings. Herein we focus on BiOCl implanted with functionalized carbon nanotube (f-CNT) used to predict AAP levels in the human body samples by electrochemical detection. Bismuth Oxy Chloride (BiOCl) improves electrochemical performance with its electrochemical active sites, it suffers from sluggish kinetics with electron transfer. The composites of BiOCl and f-CNT are well-dispersed substantially, and the synergistic interface between BiOCl and f-CNT improves the electron transfer properties, alongside the catalytic activity enhanced with the large surface area of f-CNT. Notably, the BiOCl/f-CNT/Glassy carbon electrode (GCE) composite exhibits an excellent redox AAP detection in the electrochemical methods of cyclic voltammetry and different pulse voltammetry in pH-7.0 phosphate buffer solution at 0.4 V. The BiOCl/f-CNT composite achieves an outstanding lower detection limit of 0.0016 µM with a wide linear range of 0.01 to 650 µM of AAP with a higher sensitivity of 0.8754 µA µM−1 cm−2. Moreover, composite additionally depicts good selectivity and outstanding repeatability, reproducibility, and strong stability. However, human urine and blood serum gain insights into the clinical detection of AAP with an Acceptable recovery range.

Multi-walled carbon nanotubes/carbon black/rPLA for high-performance conductive additive manufacturing filament and the simultaneous detection of acetaminophen and phenylephrine

The combination of multi-walled carbon nanotubes (MWCNT) and carbon black (CB) is presented to produce a high-performance electrically conductive recycled additive manufacturing filament. The filament and subsequent additively manufactured electrodes were characterised by TGA, XPS, Raman, and SEM and showed excellent low-temperature flexibility. The MWCNT/CB filament exhibited an improved electrochemical performance compared to an identical in-house produced bespoke filament using only CB. A heterogeneous electrochemical rate constant, kobs0\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$${k}_{obs}^0$$\\end{document} of 1.71 (± 0.19) × 10−3 cm s−1 was obtained, showing an almost six times improvement over the commonly used commercial conductive CB/PLA. The filament was successfully tested for the simultaneous determination of acetaminophen and phenylephrine, producing linear ranges of 5–60 and 5–200 μM, sensitivities of 0.05 μA μM−1 and 0.14 μA μM−1, and limits of detection of 0.04 μM and 0.38 μM, respectively. A print-at-home device is presented where a removable lid comprised of rPLA can be placed onto a drinking vessel and the working, counter, and reference components made from our bespoke MWCNT/CB filament. The print-at-home device was successfully used to determine both compounds within real pharmaceutical products, with recoveries between 87 and 120% over a range of three real samples. This work paves the way for fabricating new highly conductive filaments using a combination of carbon materials with different morphologies and physicochemical properties and their application to produce additively manufactured electrodes with greatly improved electrochemical performance.Graphical abstract

Construction of molecularly imprinted voltammetric sensor based on rGO/Ti3C2Tx for the selective determination of acetaminophen

Acetaminophen (AP) is one of the most commonly used nonsteroidal anti-inflammatory and antipyretic analgesics, but overdose of AP can produce toxic metabolite in the body, eventually leading to liver and kidney damage, which make it necessary to detect and control the proper amount. The sensor harnessed a molecularly imprinted polymer (MIP) for selective recognition of AP, and Ti3C2Tx nanosheets modified by rGO for signal amplification. The electrochemical sensing performance of MIP/rGO/Ti3C2Tx electrode toward AP was investigated. Under optimized conditions, the sensor has low detection limit (LOD = 1.58 nM, S/N = 3), wide detection range (10−8−10−3 M), strong selectivity, and good stability. In addition, the sensor can be applied to the AP detection in simulate real samples, which provides an effective method and a useful way for the application of new 2D nanomaterials in the field of sensing.

The Effect of Slicer Infill Pattern on the Electrochemical Performance of Additively Manufactured Electrodes

AbstractIn this work we report the dramatic effects that changing the infill pattern has on the electrochemical performance of an additively manufactured electrode made from commercial filament. Electrodes were produced using six different slicing patterns and imaged to confirm how the infill pattern altered the working electrode surface. These electrodes were then electrochemically characterised against the near‐ideal outer sphere redox probe [Ru(NH3)6]3+, the common inner sphere probe [Fe(CN)6]3−, and then used for the electroanalytical determination of acetaminophen. It was found that changing the infill pattern had a dramatic effect on the electrochemical performance of the electrodes. Over the course of the manuscript, it can be seen that Aligned Rectilinear and Rectilinear infill patterns perform consistently well and offer good reproducibility. On the other hand, Concentric infill pattern had noticeably poor inter‐electrode reproducibility and the Hilbert Curve infill was one of the worst performing electrodes in many categories. For future work in this field, we recommend the infill pattern is always reported within the experimental section to allow other researchers to repeat work properly. Additionally, when optimising an electroanalytical sensing platform, we encourage researchers to optimise the infill pattern as it has direct influence on the analytical parameters.

Wavelength-dependent photoelectrochemical response demonstrated by the determination of acetaminophen and rutin in differential molecularly imprinted polymers strategy

Herein, the excitation wavelength-dependent responses of the molecularly imprinted polymer (MIP) photoelectrochemical (PEC) sensors were investigated, using acetaminophen (AP), rutin (RT) and perfluorooctanoate (PFOA) as the model templates, pyrrole as functional monomer, CuInS2@ZnS/TiO2 NTs as the basic photoelectrode. With wavelength λ > 240 nm, the photocurrent of MIPPFOA enhanced at higher concentrations of PFOA. With increasing AP concentration, the photocurrents of MIPAP could decline with λ < 271 nm, not change at λ = 270 nm, or increase with λ > 270 nm. As RT concentration increased, the photocurrents of MIPRT could decrease (λ < 431 nm), not change (λ = 431 nm) or increase (λ > 431 nm). The PEC responses depend on the comprehensive interaction of two contrary mechanisms from the template molecules within the MIP membrane. The photocurrent is enhanced by the role of the electron donor for photo-generated holes but attenuated due to the steric hindrance effect and the excitation light intensity loss via absorption or scattering. The apparent molar absorption coefficient of AP and RT within MIP membranes are 9.1–19.4 folds of those measured from dilute solutions. By using a routine UV lamp as the light source, the photocurrents of MIPRT at 254 nm and MIPAP at 365 nm were used to determine RT and AP, with the detection limits of 5.3 and 16 nM, respectively. The interference from the non-specific adsorption of interferents on the surfaces of MIPAP and MIPRT was reduced by one order of magnitude via a differential strategy.

Sonochemical synthesis of lanthanum ferrite nanoparticle-decorated carbon nanotubes for simultaneous electrochemical determination of acetaminophen and dopamine.

A new nanocomposite consisting of lanthanum ferrite nanoparticles (LaFeO3 NPs) integrated with carbon nanotubes (CNTs) was fabricated via facile sonochemical approach. The engineered nanocomposite was applied to simultaneously determine acetaminophen (ACP) and dopamine (DA) in a binary mixture. The LaFeO3 NPs@CNT probe possesses several advantages such as superior conductivity, large surface area, and more active sites, improving its electrocatalytic activity towards ACP and DA. Under optimized conditions, the anodic peak currents (Ipa) linearly increased with increasing concentration of ACP and DA in the range 0.069-210 µM and 0.15-210 µM, respectively. The sensitivity of LaFeO3 NPs@CNTs/glassy carbon electrode (GCE) for detecting ACP and DA is 7.456 and 5.980 μA·μM-1·cm-2, respectively. The detection limits (S/N = 3) for ACP and DA are 0.02 μM and 0.05 μM, respectively. Advantages of LaFeO3 NPs@CNTs/GCE for the detection of ACP and DA include wide linear ranges, low-detection limits, good selectivity, and long-term stability. The as-fabricated electrode was applied to determine ACP and DA in pharmaceutical formulations and human serum samples with recoveries ranging from 97.7 to 103.3% and an RSD that did not exceed 3.7%, confirming the suitability of the proposed sensor for the determination of ACP and DA in real samples. This study not only presents promising opportunities for enhancing the sensitivity and stability of electrochemical sensors used in the detection of bioanalytes but also significantly contributes to the progress of unique and comprehensive biochemical detection methodologies.

Eco-friendly synthesized silver-magnetic nanocomposite supported on nanocellulose modified glassy carbon electrode as an electrochemical sensor for simultaneous determination of dopamine and acetaminophen

Herein, a novel and eco-friendly synthesis of electrochemical sensor for simultaneous determination of dopamine (DA) and acetaminophen (AC) based on silver-magnetic nanocomposite supported on nanocellulose modified glassy carbon electrode (Ag-Fe3O4/NC/GCE). The synthesized nanomaterials have been characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive spectroscopy (EDX). Important parameters such as scan rate and pH effects were studied to achieve the ideal conditions. The linearity ranges and the detection limits of DA and AC were 0.01–10.0 μM, 0.05–15.0 μM, 6.0 and 8.0 nM, respectively. The developed sensor was applied to real samples for the simultaneous determination of DA and AC.

2D/2D cobalt vanadate nanoplatelets/S-doped reduced graphene oxide nanosheets composite for the detection of nonsteroidal anti-inflammatory drug: Acetaminophen

Vanadate and carbonaceous materials are being developed into a composite material because of their exciting dynamics. In this study, coprecipitation and ultrasonication strategies were followed to prepare Cobalt vanadate and sulfur-doped reduced graphene oxide (CoV/S-rGO) composite for the determination of acetaminophen (Aph) nonsteroidal anti-inflammatory drug (NSAID). Because, this NSAIDs are commonly subscribed and discharged to humans and environment, it is an essential need to detect this drug. The surface morphology studies confirm that the CoV and S-rGO have two-dimensional nanoplatelets and nanosheets structure, respectively. The electrochemical features of the CoV/S-rGO modified glassy carbon electrode was assessed using cyclic voltammetry and amperometry. In this study, we have achieved excellent sensitivity, reproducibility, selectivity, and stability with a composite electrode over a linear range of 0.01–152 µM. The sensor was further demonstrated to be practical in real-time analysis of commercial tablet samples with a satisfactory recovery rate.

Electrochemical Determination of Acetaminophen Using a Hydrophilic Single-Walled Carbon Nanohorn Modified Glassy Carbon Electrode

A simple and novel electrochemical sensor based on a hydrophilic single-walled carbon nanohorn (SWCNH) modified glassy carbon electrode (GCE) was designed for the determination of acetaminophen (APAP). The hydrophilic SWCNH/GCE was characterized using Transmission electron microscopy (TEM), Raman spectroscopy, X-ray diffractometer (XRD), and X-ray photoelectron spectroscopy (XPS). This proposed sensor exhibits remarkable performance for the electrocatalytic detection of APAP. The hydrophilic SWCNH/GCE shows a good differential pulse voltammetry (DPV) response at APAP concentration from 100 to 1000 μM with sensitivity and a detection limit of 2.63 μAμM−1cm−2 and 1 μM. Regarding the reaction mechanism, the hydrophilic SWCNH/GCE could easily electro-catalyze APAP oxidation to form N-acetyl-p-benzoquinone-imine (NAPQI). Then NAPQI is rapidly degraded to p-benzoquinone in solutions of 0.1 M Na2SO4 and 0.05 M H2SO4 at pH 1.

Differential pulse voltammetry determination of acetaminophen and codeine in pharmaceutical formulations using a Mn/UiO-66 modified glassy carbon electrode

Differential pulse voltammetry determination of acetaminophen and codeine in pharmaceutical formulations using a Mn/UiO-66 modified glassy carbon electrode

Solvent effects on the graphite surface targeting the construction of voltammetric sensors with potential applications in pharmaceutical area

AbstractIn this paper the effect of different solvents (ethanol, acetone, dichloromethane and hexane) in the surface treatment of graphite for the construction of voltammetric sensors was evaluated. During voltammetric experiments of the graphite powder‐based sensor treated with ethanol, it was possible to observe a significant increase in current signals for the redox process of the model analyte (acetaminophen), as well as an increase in the area density of this sensor compared to its unmodified electrode. Theoretical studies involving Density Functional Theory (DFT) and Quantum Theory of Atoms in Molecules (QTAIM) showed greater interaction and stability when graphite was treated with ethanol solvent. Moreover, the theoretical calculations indicated that treating the voltammetric sensor with ethanol offers improvements in the electrochemical response of the model analyte mainly due to a higher spin density, and a partially covalent interaction between solvent and graphite surface. Therefore, graphite powder‐based sensors treated with ethanol were used for determination of acetaminophen in pharmaceutical samples and their results were in good agreement with those obtained by using spectrophotometric method recommended by Pharmacopoeia.

Electrochemical Determination of Acetaminophen with a FeNi Nanoparticle Reduced Graphene Oxide (rGO) Nanocomposite and Differential Pulse Voltammetry (DPV)

Acetaminophen (AP) is one of the most commonly used antipyretics. Accurate and efficient determination of its concentration is of great significance to human health. In this work, FeNi alloy nanoparticles and reduced graphene oxide (rGO) were compounded by an ultrasonic method to obtain FeNi/rGO nanocomposites. The nanocomposites were analyzed by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), and cyclic voltammetry (CV). Due to the catalytic activity of FeNi alloy nanoparticles and the synergy between the high specific surface area and conductivity of reduced graphene oxice (rGO), a FeNi/rGO nanocomposite showed excellent electrocatalysis for acetaminophen determination. With differential pulse voltammetry (DPV) as the analytical method, the linear range for acetaminophen is from 1 to 100 and 100 to 3,000 μM with a limit of detection (LOD) equal to 0.3 μM. Moreover, the sensor also has good reproducibility and selectivity with high recoveries in practical analysis.

A novel electrochemical sensing platform based on covalent organic frameworks/WC/NH2-MWCNT for highly selective determination of acetaminophen and 4-aminophenol

In this article, a novel and simple electrochemical sensing platform has been developed for the simultaneous and sensitive determination of acetaminophen (ACOP) and 4-aminophenol (4-AP). The porous covalent organic frameworks (COFs) material with β-ketoenamine-linkage was successfully synthesized via 1,3,5-triformylphloroglucinol (TFP) and 2,6-diaminoanthraquinone (DAAQ) and named as TFP-DAAQ-COF. High conductivity walnut shells-derived carbon (WC), amine-functionalized multi-walled carbon nanotubes (NH2-MWCNTs) with multiple active sites and TFP-DAAQ-COF were combined to obtain composite materials, which were used to modify bare glass carbon electrodes (GCE) and realize the electrochemical analysis of ACOP and 4-AP. The experiments showed that the composite electrode had a strong synergistic effect and exhibited a good electrocatalytic oxidation ability for the two target analytes. The linearity ranges of ACOP and 4-AP were 0.5 ∼ 200 μM and 1.0 ∼ 250 μM, respectively and the detection limits (S/N = 3) were 0.12 μM and 0.18 μM. In addition, the sensor showed acceptable reproducibility, stability and excellent selectivity. The recovery was satisfactory, when it was used to analyze the contents of ACOP and 4-AP in real samples, indicating that the sensor was feasible in practical applications.

Polyamidoamine with a hyper-branched structure grafted on modified magnetic graphene oxide for the trace separation of diclofenac and acetaminophen followed by high-performance liquid chromatography determination

Different generations of polyamidoamine dendrimers were synthesized on a focal core of magnetic graphene oxide modified with 3-aminopropyltriethoxysilane. After the characterization of synthesized dendrimers, its second generation was employed as a suitable sorbent for simultaneous separation/preconcentration of diclofenac and acetaminophen by a dispersive magnetic solid phase microextraction. The extracted analytes were then quantified by high-performance liquid chromatography with ultraviolet detection. Under optimized conditions, the limits of detection were 0.3 µg/L for diclofenac and 0.1 µg/L for acetaminophen. The intra-day relative standard deviations at 50 μg L−1 levels were 1.8% for diclofenac and 2.1% for acetaminophen, while the inter-day relative standard deviations were 3.6% and 4.5% for diclofenac and acetaminophen, respectively. The calibration graphs were linear in ranges of 1.0–500.0 µg/L and 0.5–600.0 µg/L for diclofenac and acetaminophen, respectively, with good coefficients of determination (r2 > 0.998). The method was successfully applied to the determination of diclofenac and acetaminophen in water, milk, and biological samples.

Circular Economy Electrochemistry: Recycling Old Mixed Material Additively Manufactured Sensors into New Electroanalytical Sensing Platforms.

Recycling used mixed material additively manufactured electroanalytical sensors into new 3D-printing filaments (both conductive and non-conductive) for the production of new sensors is reported herein. Additively manufactured (3D-printed) sensing platforms were transformed into a non-conductive filament for fused filament fabrication through four different methodologies (granulation, ball-milling, solvent mixing, and thermal mixing) with thermal mixing producing the best quality filament, as evidenced by the improved dispersion of fillers throughout the composite. Utilizing this thermal mixing methodology, and without supplementation with the virgin polymer, the filament was able to be cycled twice before failure. This was then used to process old sensors into an electrically conductive filament through the addition of carbon black into the thermal mixing process. Both recycled filaments (conductive and non-conductive) were utilized to produce a new electroanalytical sensing platform, which was tested for the cell's original application of acetaminophen determination. The fully recycled cell matched the electrochemical and electroanalytical performance of the original sensing platform, achieving a sensitivity of 22.4 ± 0.2 μA μM-1, a limit of detection of 3.2 ± 0.8 μM, and a recovery value of 95 ± 5% when tested using a real pharmaceutical sample. This study represents a paradigm shift in how sustainability and recycling can be utilized within additively manufactured electrochemistry toward promoting circular economy electrochemistry.

Rapid determination of acetaminophen in plasma by LC-MS/MS

Objective: To establish a method for the rapid determination of acetaminophen (APAP) in human plasma by LC-MS/MS. Methods: The plasma samples were extracted by methanol and acetonitrile (1: 1) and purified directly. C(18) column was used for sample separation. The mobile phase were methanol (5 mmol/L ammonium acetate) and water (5 mmol/L ammonium acetate). Samples were analyzed by LC MS/MS with the electrospray ionization multi reaction monitoring (MRM) mode. Results: The calibration curves of APAP was linear in the concentration range of 0~10 mg/L, the correlation coefficient (r) was greater than 0.999 0. The relative standard deviation within and between batches was less than 10%. The recovery rate were 96.81%~101.7%. The detection limit of the method was 0.1 μg/L and the lower limit of quantification was 0.3 μg/L. Conclusion: This method has strong specificity, high sensitivity and reliable determination results. It is suitable for the rapid analysis of clinical plasma samples.

Deep Eutectic Solvent-Assisted Synthesis of a Strontium Tungstate Bifunctional Catalyst: Investigation on the Electrocatalytic Determination and Photocatalytic Degradation of Acetaminophen and Metformin Drugs

In this work, we propose a modified solid-state approach for the sustainable preparation of a SrWO4 bifunctional catalyst using thymol-menthol-based natural deep eutectic green solvents (NADESs). Various spectroscopic and morphological techniques analyzed the as-synthesized SrWO4 particles. Acetaminophen (ATP) and metformin (MTF) were selected as the model drug compounds. The electrochemical detection and photocatalytic degradation of ATP and MTF upon ultraviolet-visible (UV-vis) light irradiation in the presence of as-prepared SrWO4 particles as an active catalyst are examined. The present study displayed that the proposed catalyst SrWO4 has enhanced catalytic activity in achieving the optimum experimental conditions, and linear ranges of ATP = 0.01-25.90 μM and MTF = 0.01-25.90 μM, a lower limit of detection (LOD) value (ATP = 0.0031 μM and MTF = 0.008 μM), and higher sensitivity toward ATP and MTF determination were obtained. Similarly, the rate constant was found to be k = ATP = 0.0082 min-1 and MTF = 0.0296 min-1 according to the Langmuir-Hinshelwood model, benefitting from the excellent synergistic impact of the SrWO4 catalyst toward the photocatalytic degradation of the drug molecule. Hence, this work offers innovative insights into the applicability of the as-prepared SrWO4 bifunctional catalyst as an excellent functional material for the remediation of emerging pollutants in water bodies with a recovery range of 98.2-99.75%.

Samarium doped nickel oxide supported on 2D-hexagonal boron nitride nanosheets for electrochemical sensing of Acetaminophen

An effective electrochemical sensor utilizing the superior electrocatalytic activity of SmNiO@BN nanocomposite is presented for the sensitive determination of Acetaminophen. In this study, SmNiO@BN-based nanocomposite was synthesized and characterized by FT-IR, XRD, RAMAN, XPS, SEM, TEM, and AFM analysis to inspect the structural and morphological constitution. TEM image revealed excellent morphology of hexagonal BN and synthesized nanocomposite. The electrochemical behavior of Acetaminophen on the surface of a modified GCE was studied using CV, DPV, and EIS. SmNiO@BN modified GCE has a synergistically catalytic effect for the oxidation of Acetaminophen attributed to its large surface area, more active sites, rapid charge transfer, and abundance of defects. The proposed electrochemical sensing platform for Acetaminophen detection has high selectivity, low LOD (0.43 µM), a wide linear range (0.5–13,000 µM), and a short reaction time. Modified GCE is useful for Acetaminophen detection in the real sample.