Application of graphene oxide/lanthanum-modified carbon paste electrode for the selective determination of dopamine

Ye, Fengying; Feng, Chenqi; Fu, Ning; Wu, Huayue; Jiang, Jibo; Han, Sheng

doi:10.1016/j.apsusc.2015.09.177

Cited by 29 publications

(8 citation statements)

References 43 publications

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“…[24 ] Moreover, lanthanum-modified electrodes have been used, such as LaFeO 3 for piroxican detection, [25] La 2 O 3 for guanine and uric acid and thimerosal detection, [26,27] and COOLa combined with graphene for dopamine detection. [28,29] These reports affirm the catalytic properties of lanthanum in electrode modification.…”

Section: Introductionsupporting

confidence: 60%

“…The use of lactanide oxide in the modification of electrodes has increased in recent years due to the electrochemical properties of the empty outer shell orbitals, which allow the free and stable movement of electrons in the crystal shell. [24 ] Moreover, lanthanum‐modified electrodes have been used, such as LaFeO 3 for piroxican detection, [25] La 2 O 3 for guanine and uric acid and thimerosal detection, [26,27] and COOLa combined with graphene for dopamine detection [28,29] . These reports affirm the catalytic properties of lanthanum in electrode modification.…”

Section: Introductionmentioning

confidence: 77%

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Detection of Allura Red in Food Samples Using Carbon Paste Modified with Lanthanum and Titanium Oxides

et al. 2023

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This report describes a new electroanalytical application for the detection of Allura Red (AR) using a carbon paste electrode (CPE) modified with lanthanide oxide and titanium oxide (La OX -Ti OX /CPE). The standard potential (E o ) for oxidation of AR was obtained from the E (V) vs. pH relation with the regression equation E p (V) = À 0.038pH + 0.922, where the intercept on the axis E p (V) is equal to the standard potential. Moreover, the anodic peak current for AR was increased almost 160 % compared to the unmodified electrodes, and this current increase allowed us to obtain a detection limit of 0.09 μmol/L. The active surface area of the modified electrode La-Ti OX /CPE is reported for the first time in this report and was increased by almost 200 % compared to the unmodified electrodes. The usefulness of the new method was tested by analyzing real food samples with acceptable results. The real samples do not need pretreatment before analysis [a] A.

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Section: Introductionsupporting

confidence: 60%

Section: Introductionmentioning

confidence: 77%

Detection of Allura Red in Food Samples Using Carbon Paste Modified with Lanthanum and Titanium Oxides

et al. 2023

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“…Lanthanum (III) oxide has not been used to detect SY-TZ but has been used to detect thimerosal combined only with carbon paste [10]. Combinations with other substances, such as carbon nanotubes and graphene, have been used to detect biological substances [11,12] and pharmacological substances [13][14][15]. These reports are evidence of the great versatility of La 2 O 3 in the modification of electrodes applied to detect different analytes, in this case, dyes.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Detection of Tartrazine-Sunset Yellow in Food Samples Using Bioxide/Carbon Paste Microcomposite with Lanthanum and Titanium

Nagles

Ceroni

Hurtado

2020

J. Electrochem. Sci. Technol

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This report describes the simultaneous detection of the two dyes most commonly used in food, tartrazine (TZ) and sunset yellow (SY), based on a microcomposite of carbon paste decorated with La 2 O 3 and TiO 2. Anodic currents for SY-TZ were observed at 0.89-1.21 V by cyclic voltammetry (CV) separated with a ΔV of 0.32 V. The increased anodic peak currents compared to that of the unmodified carbon paste electrode were almost 50 and 41% for SY-TZ, respectively. The detection limits with the optimal amount of Lawere 0.02 and 0.03 µmol/L, respectively. The relative standard deviation (RSD) based on fifty measurements was less than 3%. The versatility and novelty of the sensor were tested with food samples containing these substances and other substances.

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“…Carbon paste (CP) electrodes have found great era of applications in electrochemical studies and electroanalysis because of their facile preparation, low cost, suitability for a wide range of different sensing applications and surface renewability. 19,20 Graphene, merged in the world of nanotechnology and discovered by Andre Geim in 2004, is a 2D honey comb-like structure containing sp 2 carbon atoms. Graphene, in the thickness of one atom, has attracted great awareness due to its fascinating electronic, mechanical and thermal characteristics.…”

Section: Introductionmentioning

confidence: 99%

Cobalt Oxide Nanoparticles/Graphene/Ionic Liquid CrystalModified Carbon Paste Electrochemical Sensor for Ultra-sensitiveDetermination of a Narcotic Drug

Atta

El-Ads

Hassan³

2019

Adv Pharm Bull

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Purpose: Drug-abuse, namely morphine (MO) affects the metabolism of neurotransmitterssuch as dopamine (DA). Therefore, it is crucial to devise a sensitive sensing technique tosimultaneously determine both compounds in real samples.Methods: The fabrication of the sensor is based on in situ modification of a carbon paste (CP)electrode with cobalt oxide nanoparticles, graphene, and ionic liquid crystal in presence ofsodium dodecyl sulfate; CoGILCCP-SDS. The modified sensor is characterized using scanningelectron microscopy, electrochemical impedance spectroscopy and voltammetry measurements.Results: Electron transfer kinetics and analytical performance of the proposed sensor wereenhanced due to the synergistic role of all the modifiers. The simultaneous determination of MOand DA achieved low detection limits of 0.54 nmol L−1 and 0.25 nmol L−1, respectively. Besides,a carbon-based electrochemical sensor is fabricated for the nano-molar determination of MOin real samples and formulations. The sensor showed fouling resistance and anti-interferenceability in presence of other species in human fluids. The real sample analysis of MO wassuccessfully achieved with good recovery results in urine samples and pharmaceutical tablets.Linear dynamic range, sensitivity, detection limit and quantification limit of MO in urine were5 nmol L−1 to 0.6 μmol L−1, 6.19 μA/μmol L-1, 0.484 nmol L−1 and 1.61 nmol L−1, respectively.Conclusion: This sensor has great ability to be extended for electrochemical applications inassaying of many drugs.

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Application of graphene oxide/lanthanum-modified carbon paste electrode for the selective determination of dopamine

Cited by 29 publications

References 43 publications

Detection of Allura Red in Food Samples Using Carbon Paste Modified with Lanthanum and Titanium Oxides

Detection of Allura Red in Food Samples Using Carbon Paste Modified with Lanthanum and Titanium Oxides

Simultaneous Detection of Tartrazine-Sunset Yellow in Food Samples Using Bioxide/Carbon Paste Microcomposite with Lanthanum and Titanium

Cobalt Oxide Nanoparticles/Graphene/Ionic Liquid CrystalModified Carbon Paste Electrochemical Sensor for Ultra-sensitiveDetermination of a Narcotic Drug

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