Determination of catecholamines by thin-layer linear sweep voltammetry

1977 ◽  
Vol 49 (8) ◽  
pp. 1205-1210 ◽  
Author(s):  
R. R. Fike ◽  
D. J. Curran
Keyword(s):  
Thin Layer ◽  
Linear Sweep Voltammetry ◽  
Linear Sweep

scholarly journals Determination of the zinc and cadmium contents in low-alloyed tin

1999 ◽  
Vol 64 (11) ◽  
pp. 707-720
Author(s):  
N.Z. Blagojevic ◽  
R.M. Zejnilovic ◽  
A.R. Despic ◽  
Z. Blecic
Keyword(s):  
Thin Layer ◽  
Solid Solutions ◽  
Analytical Methods ◽  
Linear Sweep Voltammetry ◽  
Sweep Rate ◽  
Eutectic Type ◽  
Linear Sweep ◽  
Low Concentrations ◽  
Non Destructive

The method of anodic linear sweep voltammetry (ALSV) has been used to determine the content of Zn and Cd (up to 4% w/w) in eutectic type binary alloys with Sn. The alloy samples were prepared by casting. The effect of the type and the pH of the electrolyte, as well as of the sweep-rate on the dissolution of Zn and Cd from the alloy during an anodic potentinal-sweep was investigated. It was shown that ALSV is sensitive to low concentrations of both Zn and Cd in the investigated alloys, as well-defined peaks of the dissolution of the two metals were recorded before the massive dissolution of Sn commenced. Well-defined linear dependencies between the quantities of electricity under the dissolution peaks of Zn (QZn) or Cd (QCd) and the respective contents of the metals in the alloys were found. Intercepts at the abscissa were found in both investigated systems indicating the formation of solid solutions from which neither Zn norCd could be eluted. In both alloys, the smallest amount of the alloying component which could be detected was 0.25% (w/w). The application of the ALSV method has several advantages over other analytical methods: it is non-destructive as the dissolution involves only a very thin layer of the alloy; it requires simple and cheap instrumentation; it is fast and relatively sensitive. These make it suitable for routine analysis.

Anodic Voltammetric Behavior of Lincomycin and its Electroanalytical Determination in Pharmaceutical Dosage form and Urine at Gold Electrode

2017 ◽  
Vol 231 (5) ◽  
Author(s):  
Jyothi C. Abbar ◽  
Manjunath D. Meti ◽  
Sharanappa T. Nandibewoor
Keyword(s):  
Gold Electrode ◽  
Dosage Form ◽  
Oxidation Process ◽  
Linear Sweep Voltammetry ◽  
Linear Sweep ◽  
Experimental Conditions ◽  
Pharmaceutical Dosage Form ◽  
Antibiotic Drug ◽  
Voltammetric Behavior

AbstractThe anodic voltammetric behavior of an antibiotic drug, lincomycin hydrochloride (LIN) at gold electrode (GE) has been investigated using cyclic and linear sweep voltammetry. The dependence of the current on pH, concentration and scan rate were investigated to optimize the experimental conditions for the determination of lincomycin. The anodic peak was characterized and the process was adsorption-controlled. The number of electrons transferred in the oxidation process was calculated. In the range of 8.0×10

Determination of Rate and Equilibrium Constants for the Reactions between Electron Transfer Mediators and Proteins by Linear Sweep Voltammetry

1997 ◽  
Vol 249 (2) ◽  
pp. 212-218 ◽  
Author(s):  
Vernon D. Parker ◽  
Alisa Roddick ◽  
Lance C. Seefeldt ◽  
Haijiang Wang ◽  
Gang Zheng
Keyword(s):  
Electron Transfer ◽  
Equilibrium Constants ◽  
Linear Sweep Voltammetry ◽  
Linear Sweep

Polarographic determination of azobenzene

1986 ◽  
Vol 51 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Jiří Barek ◽  
Roman Hrnčíř
Keyword(s):  
Detection Limit ◽  
Electrode Surface ◽  
Linear Sweep Voltammetry ◽  
Polarographic Determination ◽  
Hanging Mercury Drop Electrode ◽  
Linear Sweep ◽  
Aqueous Methanol ◽  
Mercury Drop Electrode

Conditions were found for the determination of azobenzene by means of DC, AC, TAST, DP, and FSDP polarography and linear sweep voltammetry on a hanging mercury drop electrode in the medium of aqueous methanol, which ensures a sufficient solubility of azobenzene. In the latter two methods, the detection limit was around 10-8 mol/l; a still lower value could be attained by preliminary accumulation of azobenzene, i.e. adsorption on the electrode surface.

Simultaneous determination of acesulfame-K and aspartame using linear sweep voltammetry and multivariate calibration

2013 ◽  
Vol 106 ◽  
pp. 347-350 ◽  
Author(s):  
G.D. Pierini ◽  
N.E. Llamas ◽  
W.D. Fragoso ◽  
S.G. Lemos ◽  
M.S. Di Nezio ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Multivariate Calibration ◽  
Linear Sweep Voltammetry ◽  
Linear Sweep
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