« Home « Kết quả tìm kiếm

Differential pulse voltammetry

Tìm thấy 10+ kết quả cho từ khóa "Differential pulse voltammetry"

Differential pulse voltammetric determination of dopamine using Pd nanoparticles deposited on (3-aminopropyl)triethoxysilane functionalized CeO2 nanoparticles

tailieu.vn

Moreover, the electrochemical properties of the modified electrodes were in- vestigated using cyclic voltammetry, electrochemical impedance voltammetry, and differential pulse voltammetry (DPV).. The Nf/Pd@CeO 2 -APTES/GCE showed a linear range of 2.5–149.5 µ M for DA by DPV with a notable sensitivity of 0.83 mA mM − 1 cm − 2 and a low limit of detection of 0.46 µM based on the signal-to-noise ratio of 3 (S/N = 3). The Nf/Pd@CeO 2 -APTES/GCE was used for determination of DA in serum samples.

Electrochemistry of 2,6-diaminopurine on multiwall carbon nanotube modified glassy carbon electrode

tailieu.vn

Differential pulse voltammetric determination of 2,6-DAP. Differential pulse voltammetry (DPV) was used for the quantitative determination of 2,6-DAP. The peak current of DPV was linearly proportional to the concentration of 2,6-DAP. The DPV and calibration curves for oxidation of 2,6-DAP in pH 7.4 PBS at MWCNT/GCE are shown in Figures 8 and 9, respectively. The peak currents increased linearly with increasing 2,6-DAP in the concentration range from 0.4 µ mol/L to 80 µ mol/L.

Amperometric biosensing of ethanol based on integration of alcohol dehydrogenase with a Pt/PPy–PVS/MB electrode

tailieu.vn

Determination of the oxidation potential of MB was carried out using differential pulse voltammetry (DPV). Determination of ethanol was performed by the oxidation of MB (red.) at –0.072 V (vs. The current values ( ∆i = i b − i a ) were plotted against the ethanol concentration in order to determine the working range of the electrode. PPy-PVS. Reactions on the electrode surface for ethanol determination.

Electrochemical monitoring of the interaction between mitomycin C and DNA at chitosan–carbon nanotube composite modified electrodes

tailieu.vn

The oxidation signals of MC and guanine were monitored before and after the interaction process by differential pulse voltammetry (DPV).

Voltammetric determination of glycopyrrolate in a pharmaceutical formulation

tailieu.vn

The aim of this work is the determination of glycopyrrolate in pharmaceutical preparations using different voltammetric techniques, namely linear sweep voltammetry (LSV), cyclic voltammetry (CV), and differential pulse voltammetry (DPV).. The CV method was used to study the electroactivity of glycopyrrolate.

Nghiên cứu chế tạo điện cực nền cacbon nano biến tính xác định hàm lượng Pb (chì) trong nước biển

310244.pdf

dlib.hust.edu.vn

SV 41 Von - Ampe hòa tan anot Anodic Stripping Voltammetry ASV 42 Von - Ampe hòa tan catot Cathodic Stripping Voltammetry CSV 43 Von - Ampe hòa tan hấp phụ Adsorptive Stripping Voltammetry AdSV 44 Vol - Ampe xung vi phân Differential Pulse Voltammetry DP 45 Vol - Ampe sóng vuông Square Wave Voltammetry SQW Luận văn cao học GVHD: TS.

A new and simple DP polarographic method for the determination of uric acid in serum after elimination of the interference of ascorbic acid and dopamine

tailieu.vn

Fast scan voltammetry was applied with a bare carbon fiber electrode, 4 and the results obtained showed good selectivity in the determination of low concentrations of UA in the presence of AA. Thus, simultaneous detection of UA and AA was possible and the limit of detection for UA was M. 15 For the simultaneous determination of DA, AA, and UA, a carbon ionic liquid electrode was developed and it was used with cyclic voltammetry and differential pulse voltammetry (DPV).

Luận văn Thạc sĩ Khoa học: Nghiên cứu chế tạo cảm biến điện hóa nền vật liệu graphen kết hợp nano kim loại định hướng ứng dụng phân tích sudan trong thực phẩm

tailieu.vn

CA Chronoamperometry (phƣơng pháp dòng – thời gian) CV Cyclic voltammetry (phƣơng pháp quét thế tuần hoàn) DMF N,N-Dimethylformamide(Đimetylfocmamit). DPV Differential pulse voltammetry (Vol-ampe xung vi phân) EDX hay EDS Energy–dispersive X-ray spectroscopy (Phƣơng pháp tán. Các phương pháp điện hóa xác định Sudan I. Hệ 3 điện cực thu nhỏ SPCE sử dụng trong nghiên cứu này. Các đường quét CV của điện cực Ni/rGO/SPCE trong KOH 0,1M, tốc độ quét 50mV/s. 24 Hình 3.10.

Electrochemical oxidation of curcuminoids: An experimental and computational investigation

tailieu.vn

Electrochemical techniques conducted under different conditions provide an understanding of the redox behavior of electroactive compounds. 17 investigated the electrochemical reaction mechanisms of CRM, DMC, and BDMC at electrochemically reduced graphene oxide modified glass carbon electrode (GCE). 19 CRM and BDMC were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) at GCE. 20 DFT computations were conducted as well for the systematic examination of the electronic

MWCNTs-Fe2O3 nanoparticle nanohybrid-based highly sensitive electrochemical sensor for the detection of kaempferol in broccoli samples

tailieu.vn

Under the optimum experimental conditions of differential pulse voltammetry, reusability of the electrochemical sensor was evaluated with the proposed Fe 2 O 3 NPs/MWCNTs/GCE and kaempferol (5.0 M) over 6 times in succession with a relative standard deviation (RSD) of 3.2%.

Preparation of a portable calorimetry kit and one-step spectrophotometric nanomolar level detection of L-Histidine in serum and urine samples using sebacic acid capped silver nanoparticles

tailieu.vn

Differential pulse voltammetry of SA-AgNPs. The synthesized SA-AgNPs were then characterized using dif- ferential pulse voltammetry (DPV) to con fi rm their oxidation state.. (a) HR-TEM image of SA-AgNPs, (b) HR-TEM image of a single SA-AgNP and (c) Crystal lattice of SA-AgNPs.. Effect of pH with SA-AgNPs: Absorbance Vs different pH.. Ionic strength of SA-AgNPs.. SA-AgNPs were used as the electrolyte. 7 shows the differential pulse voltammetry (DPV) of SA-AgNPs.

A new and simple procedure for the trace determination of mercury using differential pulse polarography and application to a salt lake sample

tailieu.vn

A new and simple procedure for the trace determination of mercury using differential pulse polarography and application to a salt lake sample. Abstract: A new and simple differential pulse polarographic procedure was established for the trace determination of mercury(II). An indirect method had to be used since no polarographic peak can be observed for its direct determination.. According to their standard potentials, the reaction between SO 2− 3 and Hg(II) was suitable.

Cyclic voltammetry behavior of tamoxifen in different electrolytes, electrochemical characterization, and its measurement by differential pulse anodic voltammetry

tailieu.vn

Cyclic voltammetry behavior of tamoxifen in different electrolytes,. electrochemical characterization, and its measurement by differential pulse anodic voltammetry. Abstract: Cyclic voltammetry (CV) was performed on tamoxifen (tam) using different electrodes and in various acidic electrolytes containing 10% v v − 1 methanol (MeOH). Tam oxidation was found to be most favorable using 0.1 mol L − 1 H 2 SO 4 .

Determination of zineb in tap water and tomato samples by adsorptive catalytic stripping voltammetry

tailieu.vn

A differential pulse anodic stripping voltammetric method has been reported for determination of ziram using a static mercury electrode. 19 The method was applied to rice samples with recoveries of 95%–99%.

Phân tích đồng thời các dạng Dimethyldiselenite, Selenomethioline, Selenit and Selenat trong mẫu thủy hải sản

repository.vnu.edu.vn

Tommaso Ferri, Silvia Rossi, Paola Sangiorgio, “Simultaneous determination of the speciation of selenium and tellurium in geological matrices by use of an iron(III)-modified chelating resin and cathodic stripping voltammetry”, Analytica Chimica Acta pp. West (1979), “Determination of selenium in soils and plants by differential pulse cathodic-stripping voltammetry”,Talanta ,6(6), pp.

Khảo sát tính chất đặc trưng Von-ampe của một số hợp chất có hoạt tính sinh học và ứng dụng trong phân tích

repository.vnu.edu.vn

“Determination of nifedipine in human plasma by high performance liquid chromatography using column-switching technique”, Microchimica acta, Vol pp.171-178.. (1983), “Determination of some cephalosporins by differential pulse polarography and linear scan voltammetry”, Analytica Chimica Acta, Vol.146, pp. determination of loracarbef, a potential metabolite, cefaclor and cephalexin in human plasma, serum and urine”, Journal of chromatography B: Biomedical sciences and applications, Vol.567(1), pp.129

Nghiên cứu xác định lượng vết asen trong môi trường nước bằng phương pháp von-ampe hòa tan

Information_on_doctoral_thesis.doc

tainguyenso.vnu.edu.vn

“Gold film electrode preparation and activation methods for the determination of arsenic by differential pulse anodic stripping voltammetry”. Hoang Trong Sy, Hoang Thai Long, Le Thi Anh Phuong (2010). “Determination of As(III) by square wave anodic stripping voltammetry method using gold film electrode ex situ”

Electrochemical detection of DNA interaction with Mannich base derivatives by disposable graphite electrodes

tailieu.vn

In the study by Erdem et al., 15 the interactions of cis-diaminedichloroplatinum(II)(cis-DDP) and cis- bis(3-aminoflavone) dichloroplatinum(II) (cis-BAFDP) with calf thymus double-stranded DNA (dsDNA) were explored electrochemically by using differential pulse voltammetry (DPV) in combination with a pencil graphite electrode (PGE).

Multiwall carbon nanotube paste electrode as a sensor for sensitive determination of deferasirox in the presence of uric acid: Application for the analysis of pharmaceutical and biological samples

tailieu.vn

In this paper, we have focused on the electrochemical oxidation of deferasirox at a multiwall carbon nanotube paste electrode (MWCNTPE) using cyclic voltammetry (CV) and chronoamperometry techniques.. We have also discussed the capability of this electrode for sensitive determination of deferasirox using differ- ential pulse voltammetry. Surface morphology of the MWCNTPE and CPE.

Novel voltammetric investigation of dipyridamole at a disposable pencil graphite electrode

tailieu.vn

Differential pulse voltammograms of the DIP working solutions prepared from each stock solution were recorded after several time intervals, using a new PGE every time, and the intensities of the DIP oxidation peaks were compared (Figure 3)..