Carbon nanoparticles with tosyl functional group for distinguishing voltammetric peaks of ascorbic acid and uric acid

Amiri, Mandana; Imanzadeh, Hamideh; Banaei, Alireza

doi:10.1016/j.msec.2014.11.030

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…The linear equations obtained were y = −13.71 + 1.69 x ( R = 0.998) for iodide and y = −3.07 + 0.638 x ( R = 0.996) for ascorbate, where y is the peak current (nA), x is the analyte concentration (μM), and R is the correlation coefficient. The LOD obtained for AA with the proposed Pt‐ERG electrode was lower than some previously published reports using ME‐AD and also voltammetric methods .…”

Section: Resultscontrasting

confidence: 57%

Electrodeposition of reduced graphene oxide on a Pt electrode and its use as amperometric sensor in microchip electrophoresis

et al. 2015

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This report describes the development and application of a novel graphene-modified electrode to be used as amperometric sensor in microchip electrophoresis (ME) devices. The modified electrode was achieved based on electroreduction of graphene oxide on an integrated Pt working electrode of a commercial ME device. The surface modification was characterized by SEM and cyclic voltammetry techniques. The results indicated that graphene sheets were successfully deposited exhibiting higher surface conductivity and greater electrode sensitivity. The performance of the modified electrode for the amperometric detection on ME devices has been demonstrated by the separation and detection of an anionic mixture containing iodide and ascorbate. The graphene-modified electrode provided significantly higher sensitivity (896.7 vs. 210.9 pA/μM for iodide and 217.8 vs. 127.8 pA/μM for ascorbate), better separation efficiencies (3400 vs. 700 plates/m for iodide and 10 000 vs. 2400 plates/m for ascorbate), enhanced peak resolutions (1.6 vs. 1.0), and LODs (1.5 vs. 5.3 μM for iodide and 3.1 vs. 7.3 μM for ascorbate) in comparison with the unmodified Pt electrode. The proposed amperometric sensor was successfully applied for the analysis of ascorbic acid (through its anionic form) in a commercial medicine sample, and the results achieved were in agreement with the value provided by the supplier. Based on the data here presented, the modified graphene electrode shows great promise for ME applications.

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Section: Resultscontrasting

confidence: 57%

Electrodeposition of reduced graphene oxide on a Pt electrode and its use as amperometric sensor in microchip electrophoresis

et al. 2015

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“…Regarding the chemosensors, most of the sensors are highly sensitive for detection of uric acid (Table 3). Some sensors demonstrated good sensitivity and higher specificity, including ZIF-11/GCE [14], boron-doped diamond electrode [92], over-oxidized poly(3,4-ethylenedioxythiophene) nanofibers/PGE [90], and tosyl surface carbon nanoparticles/GCE [91]. Table 4 shows a large variety of biosensors with good and high selectivity for uric acid from real samples: zinc tetraaminophthalocyanine-functionalized graphene nanosheets/GCE with uricase [103], poly(brilliant green) and poly(thionine)-modified carbon nanotube-coated carbon film electrode [97], magnetically entrapped SWCNT [98], uricase/carbon nanotube/carboxymethylcellulose electrode [101], UOx/AuNP/c-MWCNT/ Au [102], and Naf/UOx/Fc/GCE [19].…”

Section: Challenges and Perspectives Of Uric Acid Electrochemical Det...mentioning

confidence: 99%

New Trends in Uric Acid Electroanalysis

Chelmea,

Badea,

Scarneciu

et al. 2023

Chemosensors

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Considering the increasing incidence of hyperuricemia and oxidative stress-related diseases, quantification of uric acid has become essential. Therefore, the evolution on sensing devices being favorable, these questions are more often addressed to the field of medical researchers. As for many metabolites, (bio)sensors provide a reliable method for screening and evaluation of uric acid status. Due to the numerous categories of (bio)sensors available, choosing the appropriate one is a challenge. This study reviews the scientific information concerning the most suitable (bio)sensors for quantification of uric acid, presenting a list of sensors from the last decade, categorized by configurations and materials. In addition, this review includes a comparison of sensors according to their interference behavior and sensitivity, offering an objective perspective for identifying devices that are suitable for clinical applications.

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“…This because it is not only the most common anti‐oxidant, but is also present in mammalian brain along with several neurotransmitters, so its determination is also crucial in the medical field. Electrochemical methods for its determination were recently reviewed , nevertheless many others were proposed since then . Many of these methods allow the determination of ascorbic acid in the presence of several other analytes, more commonly uric acid and dopamine since they are co‐existing in biological matrixes and they are oxidized at almost the same potential at traditional electrode materials.…”

Section: Water Soluble Vitaminsmentioning

confidence: 99%

“…Many of these methods allow the determination of ascorbic acid in the presence of several other analytes, more commonly uric acid and dopamine since they are co‐existing in biological matrixes and they are oxidized at almost the same potential at traditional electrode materials. Other methods were demonstrated successfully for mixture of ascorbic acid with some drugs , especially acetaminophen or components regulating the physiological function of organisms .…”

Section: Water Soluble Vitaminsmentioning

confidence: 99%

Recent Advances in Electroanalysis of Vitamins

Brunetti

2016

Electroanalysis

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Vitamins are a chemically heterogeneous group of compounds known as essential for the normal functioning of the organic metabolism. Their decrease in humans can lead to several diseases and not being produced by the body, they need to be obtained from dietary sources or supplements. For these reasons, their determination in food, pharmaceutical and clinical samples is crucial. This article reviews key advances in electrochemical measurements of vitamins over the past decade. Particular attention is given to papers proving applicability to real samples analysis. The technical features of the proposed sensors are presented and discussed along with their analytical performances. Future trends and challenges are also addressed.

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Carbon nanoparticles with tosyl functional group for distinguishing voltammetric peaks of ascorbic acid and uric acid

Cited by 11 publications

References 28 publications

Electrodeposition of reduced graphene oxide on a Pt electrode and its use as amperometric sensor in microchip electrophoresis

Electrodeposition of reduced graphene oxide on a Pt electrode and its use as amperometric sensor in microchip electrophoresis

New Trends in Uric Acid Electroanalysis

Recent Advances in Electroanalysis of Vitamins

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