Electrochemical detector

Electrochemical detector

  • CN 1,388,372 A
  • Filed: 06/19/1996
  • Published: 01/01/2003
  • Est. Priority Date: 06/19/1995
  • Status: Abandoned Application
First Claim
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1. device, this device comprises perforated membrane, working electrode on a side of film, counter electrode on the opposite side of film, electrochemical cell of the area limiting of described electrode and film therebetween, wherein film from electrolytic tank to separating a sample rest area horizontal expansion, wherein said device greater than the distance of the thickness of film with electrolytic tankExecution is used for determining the method for concentration of (or oxidation) form of the reduction of a reductant-oxidant, said method comprising the steps of:

  • (1) between electrode, apply potential difference (PD),(2) so select the current potential of working electrode, make that the electrooxidation speed (or electroreduction speed of oxidised form) of reduction form of this reductant-oxidant is diffusion control,(3) distance between selection working electrode and the counter electrode, feasible reaction product from counter electrode arrives working electrode,(4) after applying current potential and reach before the stable state, determine electric current as the function of time,(5) amplitude of estimation steady-state current, and(6) obtain to represent the value of concentration of the reduction form (or oxidised form) of coefficient of diffusion and this reductant-oxidant over time with the amplitude of steady-state current from electric current.

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