Oscillographic chronopotentiometry

Oscillographic chronopotentiometry is a new type of electroanalytical technique, developed in the P. R. China [35]. This technique is based on the change of oscillographic signal on the cathode ray oscilloscope. Harr and Daubechies wavelet functions were employed by another group in the P. R. China to de-noise the oscillographic signals of Pb(II) ions in NaOH solution and multi-components systems such as Cu(II) and Al(III) ions in LiCl solution and Cd(II) and In(III) in NaOH solution [34,35]. They found that this... 

The method, as so far developed, is limited by the condition that the hydration-dehydration reaction must proceed at a rate that is slow compared with the time needed to obtain a polarogram. In principle, the method is capable of much wider application to covalent-hydration studies if use is made of oscillographic polarographic techniques or of chronopotentiometry. These refinements are currently being investigated. 

Chrono amperom etry, Chronopotentiometry, Chronopolarography and Oscillographic Pol orography. A "steady state is said to be reached when the current-potential curve of a soln examined by the usual electrochemical methods (such as potentiometric titration, voltammetry, etc) becomes independent of time (at least for the period of time needed to carry out the measurements). However there are electrolitic phenomena which change with time,resulting in the existence of an unsteady... 

G.Chariot, J.Badoz-Lambling B. Tre-millon, "Electrochemical Reactions. The Electrochemical Methods of Analysis , Elsevier Amsterdam (1962), 309-10 (Chronoamperometry at const potential) 310-13 (Chronoamperometry with varying potential) 314-18 (Chronopotentiometry) 318-24 (Oscillographic polarography) 32)D.N.Hume, Anal Chem 34, 178R-179R (April 1962) (Chronopotentiometry a review)... 

Both linear sweep voltammetry (oscillographic polarography, stationary electrode polarography, chronoamperometry with linear sweep) and chrono-potentiometry have been extensively applied for studies in molten salts. The advantages of linear sweep voltammetry include (1) extensively developed theory enabling the experimentalist to interpret the mechanisms of relatively complex electrode reactions (2) well-defined mass transfer conditions, particularly when faster scan rates ( 1 V/sec) are employed (3) the decrease of the faradaic charge with the square root of the scan rate and the resulting decrease of any modifications of the solid electrode caused by the faradaic process. Chronopotentiometry, 29) related electroanalytical... 

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