Tìm thấy 11+ kết quả cho từ khóa "Linear sweep voltammetry"
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Development of a spiramycin sensor based on adsorptive stripping linear sweep voltammetry and its application for the determination of spiramycin in chicken egg. Moreover, the previous pharmacokinetic studies [2,3] of veterinary drugs in eggs showed that the risk of spiramycin residue in the egg is quite excessive. Therefore, accurate, simple, and precise analytical methods need to be developed for the determination of spiramycin in poultry products..
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Hoạt tính điện hóa của xúc tác Ni/cellulose cũng được khảo sát bằng phương pháp quét thế vòng tuần hoàn (cyclic voltammetry - CV), quét thế tuyến tính (linear sweep voltammetry – LSV) và chronoamperometry - CA. Kết quả đặc tính cho thấy các hạt Ni kích thước nano phân bố không đồng đều trên mạch cellulose, xúc tác Ni/cellulose cho thấy hoạt tính điện hóa cao và ổn định đối với quá trình điện hóa ethanol.
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Hoạt tính điện hóa của xúc tác Ni/cellulose cũng được khảo sát bằng phương pháp quét thế vòng tuần hoàn (cyclic voltammetry - CV), quét thế tuyến tính (linear sweep voltammetry – LSV) và chronoamperometry - CA. Kết quả đặc tính cho thấy các hạt Ni kích thước nano phân bố không đồng đều trên mạch cellulose, xúc tác Ni/cellulose cho thấy hoạt tính điện hóa cao và ổn định đối với quá trình điện hóa ethanol.
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In the present paper, the effect of boric acid on the kinetics of the PbO2/PbSO4 couple was investigated using linear sweep voltammetry, constant potential, and impedance techniques.. The frequency range of the system is from 0.1 Hz to 100 kHz. For the lead elec- trode in sulfuric acid solutions, the linear sweep vol- tammograms are well identified [21-25]. In our inves- tigations, the lead electrode was cycled in 4.5 M H z S O 4 containing different concentrations of boric acid at 45.
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The fabricated electrode was analysed the determination of hydrazine using cyclic voltammetry, linear sweep voltammetry and amperometry. The peak potential of hydrazine oxidation on bare GCE, poly(PP)/GCE, CNT/GCE, CNT/. A shift in the overpotential to more negative direction and an enhancement in the peak current indicated that the AuNPs/CNT/poly(PP)/GC electrode presented an efficient electrocatalytic activity toward oxidation of hydrazine.
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The electrochemical activities of the catalysts were investigated in electrolyte solution using basic electrochemical methods such as cyclic voltammetry (CV) and linear sweep voltammetry (LSV) with computer controlled AFCBP1 model Pine Bipotentiostat. Mass transfer corrected Tafel plots were constructed with kinetic current density, which was extracted from Koutecky Levich (K–L) plots, and apparent exchange current density, j o ap , of the ORR was calculated.
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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.
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Cyclic voltammetry combined with linear sweep voltammetry at a rotating disk electrode (RDE) and a rotating ring disk electrode (RRDE) was utilized to evaluate the catalytic activity for the electroreduction of O 2 . The structures of these compounds are shown in the Chart. We have earlier examined numerous cobalt triarylcorroles as to their catalytic properties for the reduction of O 2 and demonstrated that the type and position of substituents on the 3.
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Open circuit potential, chronoamperometry, linear sweep voltammetry, and short-circuit current measurements were performed to determine kinetic parameters and other properties of the immobilized enzyme electrode for the modeling study [19,20].. Power generation with enzymatic biofuel cells is proportional to the electrode surface area that provides space for the substrate (i.e. fuel) to react with the immobilized enzyme on the electrode.
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However, before investigating their performance in BFCs, MnO 2 np and Al 2 O 3 –TiO 2. nanostructure modified GOx/GCPE bioanodes’ electrochemical performance was examined by using linear sweep voltammetry (LSV). Measurements were recorded between –0.2 and 1.2 V at a scan rate of 10 mV s − 1 with nanostructure-free and modified GOx/GCPE electrodes in 20 mM BQ and 250 mM glucose containing 10 mL of 100 mM PBS. A comparison of the voltammograms is given in Figure 2.
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Open circuit potential, chronoamperometry, linear sweep voltammetry, and short-circuit current measurements were used to determine the kinetic parameters of the immobilized enzyme on the electrode [16]. Reference 600R) was used for the electrochemical measurements.. Covalently immobilized GOx on the electrode was crosslinked covalently with glutaraldehyde under mild con- ditions by employing crosslinker concentrations of 0.5%–2% to obtain a more stable enzyme electrode.
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Linear sweep voltammetry (LSV) and amperometry were used to determine the hydrazine in pH 10.0 PBS at AuNPs/(VOx- RuOx)/CNT/GCE. LSV was studied with a wide range of hydrazine concentrations µM). The oxidation peak shifted to the positive direction potentials, increasing the concentration of hydrazine.
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General expression of the linear potential sweep voltammogram in the case of diffusionless electrochemical systems
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sweep voltammetry was studied by Ensafi and Allafchian. reported a voltammetric sensor based on a molecularly imprinted polymer grafted on multiwall carbon nanotubes for the quantification of CEF. 16 To the best of our knowledge, there are no articles about voltammetric or amperometric determination of CEF utilizing ionic liquids with a bismuth film-modified electrode, which is the main goal of this study.. 34,35 IL/Bi- modified PGE surfaces have never been used in any electrochemical detection
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The three electrodes configuration, including graphite rod (i.e., counter electrode), Ag/AgCl (i.e., reference electrode), and MoS 2 nanoparticles on graphite foil (i.e., working electrode) was employed to plot the lin- ear sweep voltammetry (LSV) and cyclic voltamme- try (CV). The morphology of MoS 2 nanoparticles was observed by FESEM images, as shown in Figure 2.
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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 .
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The calibration graph for the accumulation time of 60 s was linear in the concentration range of µ M (7.2–1925 µ g/L) and obeyed the equation I p = 211.61C Z. the peak current (in nA) and the concentration of zineb (in µ M), respectively. On the other hand, a calibration graph was also constructed under the conditions given in the literature 2 for determination of zineb for 60-s accumulation time in the absence of S 2 O 2 8 − by adsorptive stripping voltammetry.
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Stripping voltammetry, on the other hand, provides an inexpensive way for sensitive and selective analysis in saline matrices. 9 However, direct electrochemical detection of aluminum is difficult since it is reduced at very negative potentials.
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The frequency sweep study shows the sensitivity of the power generated to the contact stiffness, damping and clearance between the beams. The power generated by the coupled system from the non-linear impact is sensitive to the thickness ratio of the beams and the clearance. The variation in thickness ratio alters the spacing of the natural frequencies of the system which causes modes to interact.
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Linear block code (n,k). A set with cardinality is called a linear block code if, and only if, it is a . subspace of the vector space. Linear block codes – cont’d. The Hamming weight of vector U, denoted by w(U), is the number of nonzero elements in U.. The Hamming distance between two vectors U and V, is the number of elements in which they differ. is the transition probability or bit error probability over channel. Linear block codes –cont’d. elements in the codeword are information bits..