Differential pulse voltammetric simultaneous determination of ascorbic acid, dopamine and uric acid on a glassy carbon electrode modified with electroreduced graphene oxide and imidazolium groups

Wu, Feng; Huang, Ting; Hu, Yadong; Yang, Xin; Ouyang, Yongzhong; Xie, Qingji

doi:10.1007/s00604-016-1895-3

Cited by 63 publications

(28 citation statements)

References 32 publications

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“…Methods for AA determination include redox titration with 2,6-dichlorophenolindophenol (DCPIP) [2], HPLC [3], electrochemical [4, 5], fluorescent and spectrophotometric methods [6–16]. …”

Section: Introductionmentioning

confidence: 99%

Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine

Morosanova

Моросанова

2017

Chemistry Central Journal

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BackgroundAscorbic acid is one of the most important vitamins to monitor in dietary sources (juices and vitamins) and biological liquids.ResultsSilica and silica-titania xerogels doped with Mo,P-heteropoly compounds (HPC) have been synthesized varying titanium(IV) and HPC content in sol. Their surface area and porosity have been studied with nitrogen adsorption and scanning electron microscopy, their elemental composition has been studied with energy-dispersive X-ray analysis. The redox properties of the sensor material with sufficient porosity and maximal HPC content have been studied with potentiometry and solid phase spectrophotometry and it has been used for solid phase spectrophotometric determination of ascorbic acid. The proposed method is characterized by good selectivity, simple probe pretreatment and broad analytical range (2–200 mg/L, LOD 0.7 mg/L) and has been applied to the analysis of fruit juices, vitamin tablets, and synthetic urine.ConclusionsNew sensor material has been used for simple and selective solid phase spectrophotometric procedure of ascorbic acid determination in fruit juices, vitamin tablets, and synthetic urine.Graphical abstractWe synthesized several silica-titania xerogels doped with Mo,P-heteropoly compounds, studied their properties, and designed the sensor material for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine.

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“…Methods for AA determination include redox titration with 2,6-dichlorophenolindophenol (DCPIP) [2], HPLC [3], electrochemical [4, 5], fluorescent and spectrophotometric methods [6–16]. …”

Section: Introductionmentioning

confidence: 99%

Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine

Morosanova

Моросанова

2017

Chemistry Central Journal

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“…Although the physiological level of glucose (3–8 mM) is substantially higher than that of easily oxidizable interferences including ascorbic acid(AA) (0.1 mM) and uric acid(UA) (0.1 mM) in human blood, the electron transfer rates of aforesaid interfering species are higher than that of glucose and their oxidation responses are comparable to glucose60. Hence, the interference test of MWCNT/Ni-Co/GCE was evaluated with the successive addition of 2 mM glucose and 0.2 mM of interfering species such as urea (U), dopamine(DA), citric acid(CA), acetaminophen(AP), sodium chloride(NaCl), AA and UA in 0.1 M NaOH solution at an applied potential of 0.45 V vs .…”

Section: Discussionmentioning

confidence: 99%

“…GCE with a surface area of 0.07 cm 2 and a diameter of 3 mm was polished and dried according to the procedure described elsewhere60. The prepared nanostructure was homogenously dispersed in ethanol (1 mg ml −1 ) by using an ultrasonic treatment for 20 min, and the prepared slurry (6 μl) was coated on the GCE surface and dried at room temperature.…”

Section: Methodsmentioning

confidence: 99%

Ni-Co bimetal nanowires filled multiwalled carbon nanotubes for the highly sensitive and selective non-enzymatic glucose sensor applications

Ramachandran

kumar

Babu

et al. 2016

Sci Rep

154

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The facile, time and cost efficient and environmental benign approach has been developed for the preparation of Nickel (Ni)-Cobalt (Co) alloy nanowires filled multiwalled carbon nanotubes (MWCNTs) with the aid of mesoporous silica nanoparticles (MSN)/Ni-Co catalyst. The controlled incorporation of Ni-Co nanostructures in the three dimensional (3D) pore structures of MSN yielded the catalytically active system for the MWCNT growth. The inner surface of MWCNTs was quasi-continuously filled with face-centered cubic (fcc) structured Ni-Co nanowires. The as-prepared nanostructures were exploited as non-enzymatic electrochemical sensor probes for the reliable detection of glucose. The electrochemical measurements illustrated that the fabricated sensor exhibited an excellent electrochemical performance toward glucose oxidation with a high sensitivity of 0.695 mA mM−1 cm−2, low detection limit of 1.2 μM, a wide linear range from 5 μM–10 mM and good selectivity. The unprecedented electrochemical performances obtained for the prepared nanocomposite are purely attributed to the synergistic effects of Ni-Co nanowires and MWCNTs. The constructed facile, selective and sensitive glucose sensor has also endowed its reliability in analyzing the human serum samples, which wide opened the new findings for exploring the novel nanostructures based glucose sensor devices with affordable cost and good stability.

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“…The separations of uric acid from ascorbic acid by voltametric methods with the aid of CNTs have been reported [151][152][153]. Dopamine is a neurotransmitter, and its disturbance, plays a significant role in the pathways of many neurodegenerative and CNS diseases.…”

Section: Mwcnts For Achiral Separation In Biologicsmentioning

confidence: 99%

Application of Carbon Nanotubes in Chiral and Achiral Separations of Pharmaceuticals, Biologics and Chemicals

Hemasa

Naumovski

Maher

et al. 2017

Preprint

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Carbon nanotubes (CNTs) possess unique mechanical, physical, electrical and absorbability properties coupled with their nanometer dimensional scale that renders them extremely valuable for applications in many fields including nanotechnology and chromatographic separation. The aim of this review is to provide an updated overview about the applications of CNTs in chiral and achiral separations of pharmaceuticals, biologics and chemicals. Chiral SWCNTs and MWCNTs have been directly applied for the enantioseparation of pharmaceuticals and biologicals by using them as stationary or pseudostationary phases in chromatographic separation techniques such as high-performance liquid chromatography (HPLC), capillary electrophoresis (CE) and gas chromatography (GC). Achiral MWCNTs have been used for achiral separations as efficient sorbent objects in solid-phase extraction techniques of biochemicals and drugs. Achiral SWCNTs have been applied in achiral separation of biological samples. Achiral SWCNTs and MWCNTs have been also successfully used to separate achiral mixtures of pharmaceuticals and chemicals. Collectively, functionalized CNTs have been indirectly applied in separation science by enhancing the enantioseparation of different chiral selectors whereas, non-functionalized CNTs have shown efficient capabilities for chiral separations by using techniques such as encapsulation or immobilization in polymer monolithic columns.

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Differential pulse voltammetric simultaneous determination of ascorbic acid, dopamine and uric acid on a glassy carbon electrode modified with electroreduced graphene oxide and imidazolium groups

Cited by 63 publications

References 32 publications

Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine

Silica-titania xerogel doped with Mo,P-heteropoly compounds for solid phase spectrophotometric determination of ascorbic acid in fruit juices, pharmaceuticals, and synthetic urine

Ni-Co bimetal nanowires filled multiwalled carbon nanotubes for the highly sensitive and selective non-enzymatic glucose sensor applications

Application of Carbon Nanotubes in Chiral and Achiral Separations of Pharmaceuticals, Biologics and Chemicals

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