Results 211 to 220 of about 942 (229)
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Determinationation of kanamycin by square-wave cathodic adsorptive stripping voltammetry
Russian Journal of Electrochemistry, 2008A square-wave cathodic adsorptive stripping voltametric (SWCASV) method for the determination of kanamycin was developed on a thin-film mercury electrode (TFME). The optimal working conditions for the application of the method were found to be pH 8.0, provided by a Britton-Robinson (B.R.) buffer, and an adsorption potential of +0.30 V during 300 s. The
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Electrochemical Studies and Square‐Wave Adsorptive Stripping Voltammetry of Spironolactone Drug
Analytical Letters, 2008Abstract A sensitive and reliable stripping voltammetric method was developed to determine Spironolactone drug. This method is based on the adsorptive accumulation of the drug at a hanging mercury drop electrode and then a negative sweep was initiated, which yield a well defined cathodic peak at −1000 mV versus Ag/AgCl reference electrode.
Ahmad H. Al‐Ghamdi +2 more
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Assay of dipyridamole in human serum using cathodic adsorptive square-wave stripping voltammetry
Analytical and Bioanalytical Chemistry, 2002A rapid and sensitive square-wave voltammetric procedure was optimized for the determination of dipyridamole after its adsorption preconcentration onto a hanging mercury drop electrode. The peak current of the first of the two peaks developed for this drug in Britton-Robinson buffer at pH 8.0 has been considered for the present analytical study.
M M, Ghoneim, A, Tawfik, A, Radi
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Analytica Chimica Acta, 1999
A model of the cathodic stripping process of an insoluble mercuric salt precipitated on the mercury electrode surface and complicated by adsorption of the reacting ligand, is developed under conditions of square-wave voltammtry (SWV). The adsorption isotherm of the reacting ligand is supposed to be linear.
Mirčeski, Valentin, Lovrić, Milivoj
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A model of the cathodic stripping process of an insoluble mercuric salt precipitated on the mercury electrode surface and complicated by adsorption of the reacting ligand, is developed under conditions of square-wave voltammtry (SWV). The adsorption isotherm of the reacting ligand is supposed to be linear.
Mirčeski, Valentin, Lovrić, Milivoj
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Journal of Pharmaceutical and Biomedical Analysis, 2002
The adsorptive and electrochemical behavior of trimetazidine hydrochloride on a glassy carbon electrode were investigated in acetate buffer solution by using cyclic and square-wave voltammetry. Cyclic voltammetric studies indicated the oxidation of trimetazidine hydrochloride at the electrode surface through a single two-electron irreversible step and ...
M M, Ghoneim +2 more
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The adsorptive and electrochemical behavior of trimetazidine hydrochloride on a glassy carbon electrode were investigated in acetate buffer solution by using cyclic and square-wave voltammetry. Cyclic voltammetric studies indicated the oxidation of trimetazidine hydrochloride at the electrode surface through a single two-electron irreversible step and ...
M M, Ghoneim +2 more
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Analytical Chemistry, 1999
The direct and reliable electrochemical detection of DNA is of paramount importance to the development of modern DNA hybridization chips, for the detection of nucleic acids following their electrophoretic separations, or for the sensing of DNA damage and interactions.
J, Wang +4 more
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The direct and reliable electrochemical detection of DNA is of paramount importance to the development of modern DNA hybridization chips, for the detection of nucleic acids following their electrophoretic separations, or for the sensing of DNA damage and interactions.
J, Wang +4 more
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Analytica Chimica Acta, 2005
Abstract Square-wave adsorptive voltammetry was applied for the determination of cyclofenil at ultra-trace levels. Due to the unstable behavior of cyclofenil, the analyte photochemical derivative was used for quantification. This stable analyte photoderivative was pre-concentrated (30 s accumulation time) on the hanging mercury drop electrode (HMDE),
Wagner F. Pacheco +2 more
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Abstract Square-wave adsorptive voltammetry was applied for the determination of cyclofenil at ultra-trace levels. Due to the unstable behavior of cyclofenil, the analyte photochemical derivative was used for quantification. This stable analyte photoderivative was pre-concentrated (30 s accumulation time) on the hanging mercury drop electrode (HMDE),
Wagner F. Pacheco +2 more
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Journal of Analytical Chemistry, 2018
This work describes the electroanalytical determination of Chlorpyriphos pesticide in natural waters using hanging mercury drop electrode allied to square wave adsorptive cathodic stripping voltammetry. The best responses were obtained in Britton‒Robinson buffer solutions at pH 2.0, using a frequency of 100 s–1, a scan increment of 5 mV, a square wave ...
Luisa C. Melo +6 more
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This work describes the electroanalytical determination of Chlorpyriphos pesticide in natural waters using hanging mercury drop electrode allied to square wave adsorptive cathodic stripping voltammetry. The best responses were obtained in Britton‒Robinson buffer solutions at pH 2.0, using a frequency of 100 s–1, a scan increment of 5 mV, a square wave ...
Luisa C. Melo +6 more
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