Results 271 to 280 of about 2,467 (304)

Adsorptive stripping voltammetry of a fentanyl derivative at a mercury electrode

Talanta, 1994
In a supporting electrolyte of NaOH, a pair of cathodic and anodic peaks of N,N'-diphenyl-N,N'-bis(1-phenylmethyl-4-piperidinyl)-ethanediamide (DBPPE) is found by cyclic voltammetry at a Hg electrode. The cathodic and anodic peak potentials are -1.53 and -1.46 V (vs. Ag/AgCl), respectively.
N, Hu, H, Guo, S, Lin
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Determination of cadmium by differential pulse adsorptive stripping voltammetry

Journal of Pharmaceutical and Biomedical Analysis, 2000
A study of the adsorptive stripping voltammetry of cadmium on a mercury drop electrode is reported in which 2-mercapto-5-phenyl-amino-1,3,4-thiadiazole (MPATD), synthesized at home has been used as a chelating agent. The most suitable operating conditions and parameters such as buffer, pH, deposition potential, deposition time, ligand concentration ...
P, Suciu, M, Vega, L, Roman
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Determination of traces molybdenum by catalytic adsorptive stripping voltammetry

Talanta, 2005
A reliable and very sensitive procedure for the determination of ultra trace of molybdenum is proposed. Molybdenum was determined by cathodic stripping differential pulse voltammetry based on the adsorption collection of the Mo(VI)-Tiron complex on a hanging mercury drop electrode (HMDE).
Ali A, Ensafi, Shokooh S, Khaloo
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Fast adsorptive stripping voltammetry of iron in oxygenated seawater

Electroanalysis, 1996
AbstractA fast adsorptive stripping voltammetric procedure for the determination of ultratrace amounts of iron in unpurged oceanic waters is reported. The method is based on that developed by van den Berg et al. [l]. It was modified to increase the sensitivity, to measure in the presence of oxygen and to reduce drastically the analysis time at the ...
Gelado-Caballero, María D., Hernández-Brito, José J., Herrera-Melián, José A., Collado-Sanchez, Cayetano, Pérez-Peña, Jesús   +4 more
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Determination of medecamycin by adsorptive stripping voltammetry with an activated electrode

Analytical and Bioanalytical Chemistry, 2004
The adsorptive and electrochemical behaviors of medecamycin were investigated on a glassy carbon electrode (GCE) pretreated by anodic oxidation at +1.8 V for 5 min in 0.025 mol l(-1) NH(3)-NH(4)Cl (pH 8.6) solution. An adsorptive stripping voltammetric method for the determination of medecamycin at the pretreated glassy carbon electrode has been ...
Nian Bing, Li, Hong Qun, Luo, Guo Nan, Chen   +2 more
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Adsorptive stripping voltammetry for the determination of nifedipine in human serum

Talanta, 1989
Adsorptive stripping voltammetry is used for the determination of trace levels of nifedipine. The conditions for preconcentration on the mercury drop electrode have been studied and the final measurements are made by differential pulse voltammetry.
R J, Diez-Caballero, L L, de la Torre, J F, Valentin, A A, Garcia   +3 more
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On-line determination of vanadium by adsorptive stripping voltammetry

Analytica Chimica Acta, 1995
Abstract An on-line electrochemical stripping procedure for trace determination of vanadium was developed combining the advantages of adsorptive stripping voltammetry with flow injection analysis. The vanadium formed a complex with cupferron in an acetate buffered solution which adsorbed onto the mercury film electrode.
Gillian M. Greenway, Georg Wolfbauer
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Indirect determination of surfactants by adsorptive stripping voltammetry

Analytica Chimica Acta, 1986
Abstract The effect of some anionic, cationic and nonionic surface-active substances on the suppression of adsorptive accumulation of the bis(dimethylglyoximato)nickel(II) complex, Ni(DMG) 2 , is described. Competitive adsorption of surfactants can be used to determine surfactants commonly used in commercial detergents.
B Pihlar, B Gorenc, D Petric
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Square-wave adsorptive cathodic stripping voltammetry of pantoprazole

Journal of Pharmaceutical and Biomedical Analysis, 2003
Adsorption and reduction of pantoprazole were investigated by cyclic and square-wave voltammetry on a hanging mercury drop electrode in Britton-Robinson buffers at pH 2.0-11.0. The reduction process gave rise to a single peak within the entire pH range.
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Determination of azinphos-methyl by adsorptive stripping voltammetry

Analytica Chimica Acta, 1990
Abstract A very sensitive electrochemical stripping procedure for azinphos-methyl (Guthion) is reported. Accumulation is achieved by adsorption of the compound on a hanging mercury drop electrode. The adsorptive stripping response was evaluated with respect to accumulation time and potential, concentration dependence, electrolyte and other variables.
Pedro Hernández, Encarnacion Lorenzo, Lucas Hernández   +2 more
openaire   +1 more source