Electrochemical behavior of tectoridin and its sensitive determination based on l-arginine modified electrode

Qiao, Wenming; Wang, Lu; Li, Huichao; Li, Gaiping; Li, Jianjun; Ye, Baoxian

doi:10.1016/j.talanta.2015.07.033

Cited by 16 publications

(5 citation statements)

References 24 publications

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“…has some advantages over GO that higher conductivity is the most significant [39][40][41][42] . Although l-arginine (Arg) has been used to prepare electrochemical sensors [43][44][45][46][47] , this is the first time that RGO was functionalized with l-Arg to be used for a sensitive and selective detection of heavy metals. In the only close report, Verma et al utilized arginine functionalized magnetic NPs to remove heavy metals from water samples 48 .…”

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confidence: 99%

An optical and electrochemical sensor based on l-arginine functionalized reduced graphene oxide

Ghanbari

Ahour

Keshipour

2022

Sci Rep

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The electrochemical and photochemical properties of graphene derivatives could be significantly improved by modifications in the chemical structure. Herein, reduced graphene oxide (RGO) was functionalized with l-arginine (l-Arg) by an amidation reaction between the support and amino acid. Deposition of a powerful ligand, l-Arg, on the optically active support generated an effective optical chemosensor for the determination of Cd(II), Co(II), Pb(II), and Cu(II). In addition, l-Arg-RGO was used as an electrode modifier to fabricate l-Arg-RGO modified glassy-carbon electrode (l-Arg-RGO/GCE) to be employed in the selective detection of Pb(II) ions by differential pulse anodic stripping voltammetry (DP-ASV). l-Arg-RGO/GCE afforded better results than the bare GCE, RGO/GCE, and l-Arg functionalized graphene quantum dot modified GCE. The nanostructure of RGO, modification by l-Arg, and homogeneous immobilization of resultant nanoparticles at the electrode surface are the reasons for outstanding results. The proposed electrochemical sensor has a wide linear range with a limit of detection equal to 0.06 nM, leading to the easy detection of Pb(II) in the presence of other cations. This research highlighted that RGO as a promising support of optical, and electrochemical sensors could be used in the selective, and sensitive determination of transition metals depends on the nature of the modifier. Moreover, l-Arg as an abundant amino acid deserves to perch on the support for optical, and electrochemical determination of transition metals.

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confidence: 99%

An optical and electrochemical sensor based on l-arginine functionalized reduced graphene oxide

Ghanbari

Ahour

Keshipour

2022

Sci Rep

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“…1 shows Nyquist plot of EIS at GCE, MWCNT-GCE, Ag MP-MWCNT-GCE and PAN-Ag MP-MWCNT-GCE in 5×10 −3 M

in 0.1 M KCl. The diameter of semicircle domains at high frequency region in the Nyquist plot provides the electron transfer resistance ( R ct ) at the electrode surface and is used to define the interface properties of the electrode [32] . The semicircle in high-frequency regions obtained for modified electrodes was smaller compared to that of bare GCE, indicating decreased impedance at modified electrodes.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical determination of an anti-hyperlipidimic drug pitavastatin at electrochemical sensor based on electrochemically pre-treated polymer film modified GCE

Pandit

Naikoo

Sheikh

et al. 2017

Journal of Pharmaceutical Analysis

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An electrochemically pretreated silver macroporous (Ag MP) multiwalled carbon nanotube modified glassy carbon electrode (PAN-Ag MP-MWCNT-GCE) was fabricated for the selective determination of an anti-hyperlipidimic drug, pitavastatin (PST). The fabricated electrochemical sensor was characterized by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The fabricated electrode was employed in quantifying and determining PST through differential pulse adsorptive stripping voltammetry (DPAdSV) and CV. The electrode fabrication proceeded with remarkable sensitivity to the determination of PST. The effect of various optimized parameters such as pH, scan rate (ν), accumulation time (tacc), accumulation potential (Uacc) and loading volumes of Ag MP-MWCNT suspension were investigated to evaluate the performance of synthesized electrochemical sensor and to propose a simple, accurate, rapid and economical procedure for the quantification of PST in pharmaceutical formulations and biological fluids. A linear response of PST concentration in the range 2.0×10−7–1.6×10−6 M with low detection (LOD) and quantification (LOQ) limits of 9.66±0.04 nM and 32.25±0.07 nM, respectively, were obtained under these optimized conditions.

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“…Many domestic and foreign scholars have conducted extensive research on fluvial depositional systems, with a higher level of research on meandering river reservoir architecture. For instance, research has been conducted on architecture subdivisions, point bar analysis, architecture modeling, and the establishment of geological knowledge bases [7][8][9][10][11][12][13][14]. However, the complex sedimentary processes and ambiguous sedimentary interfaces of sandy-gravelly braided rivers have increased the difficulty of identifying reservoir architecture interfaces, making the fine study of braided river reservoir architecture one of the challenges faced by geologists both domestically and internationally [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Architecture Characterization of Braided River Reservoirs in the Presence of Horizontal Wells—An Application in a Tight Gas Reservoir in the North Ordos Basin, China

Chen,

Liu,

Feng

et al. 2023

Energies

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The study of the reservoir architecture in braided river systems has significant implications for the exploitation of remaining oil and gas reserves. However, due to the complexity of the braided river deposition process, the architecture patterns are diverse and intricate. Limited by the quality of seismic data and well network density, the characterization of underground reservoir architecture often entails considerable uncertainty. This paper investigates the architecture elements, stacking patterns, and significance of oil and gas development in the braided river deposition of the Jin 58 well area in the northern part of the Ordos Basin through typical field outcrop and core observations, and by making full use of horizontal well data. The study reveals that the Jin 58 well area is mainly characterized by four types of architecture units: braided channel, channel bar, overbank, and flood plain. Based on the data from horizontal and vertical wells, four identification criteria for single sand bodies are determined, and the vertical stacking and lateral juxtaposition styles of the architecture units, as well as the architecture patterns and internal features of the channel bar, are summarized. It is confirmed that composite sand bodies have better productivity. A three-dimensional architecture model of the braided river is established based on the results of architecture analysis. The accuracy of the architecture analysis is validated through numerical simulation, providing a basis for subsequent well deployment and other related activities.

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Electrochemical behavior of tectoridin and its sensitive determination based on l-arginine modified electrode

Cited by 16 publications

References 24 publications

An optical and electrochemical sensor based on l-arginine functionalized reduced graphene oxide

An optical and electrochemical sensor based on l-arginine functionalized reduced graphene oxide

Electrochemical determination of an anti-hyperlipidimic drug pitavastatin at electrochemical sensor based on electrochemically pre-treated polymer film modified GCE

The Architecture Characterization of Braided River Reservoirs in the Presence of Horizontal Wells—An Application in a Tight Gas Reservoir in the North Ordos Basin, China

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