Electrochemically modified semiconductor gallium arsenide electrodes for the argentometric titration of chlorides with silver nitrate in natural samples

V. A. Burakhta, S. S. Sataeva

2014

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DOI 10.1134/s1061934814110033
Data confidence 70 medium
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Abstract

An electrochemical method is proposed for the modification of the surface of semiconductor gallium arsenide sensors. The electrochemical modification of the surface of GaAs-electrodes leads to the improvement of their electrochemical characteristics: an increase in the slope of the electrode function, a decrease in response time, and the extension of the concentration range. Potentiometric titration using unmodified and modified GaAs-electrodes for the determination of chlorides with silver nitrate in soil has been performed. The application of the modified sensors ensures the detection of the titration end-point with a higher accuracy.