Sensor peroxidase-mimetic

PEROXIDASE-MIMETIC SENSOR FOR DETECTION OF ETHANOL IN LOW CONCENTRATIONS IN AQUEOUS SOLUTIONS... 

As shown below, the basic principles of peroxidase-mimetic sensor appliance operation are developed using the example of model peroxidase reaction of ethyl alcohol electrochemical oxidation to aldehyde. 

Studies on ethanol trace detection in aqueous solutions were carried out in an electrochemical cell of peroxidase-mimetic sensor of the potentiometric type, consisting of a reference electrode (Ag/AgCl) and a biomimetic electrode. Redistilled water was used for the background solution. The biomimetic electrode was prepared by adhering hematin-containing meroxidase mimetic to aluminum foil with Pattex adhesive [7, 8],... 

To check these suggestions, the authors conducted an experiment with a peroxidase-mimetic sensor prepared on a new aluminum electrode under conditions corresponding to one of the minima in Figure 8.14. As shown by the plot of this experiment (point A in Figure 8.14), the minimum at C2H5OH concentration equal 10-3wt.% depends on aluminum foil conditions for a fresh electrode a sharp, jump-like increase of the potential is detected. 

The investigations of catalase-mimetic sensors allow continuation of studies in the field of biomimetic sensors of peroxidase type. 

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