Potentiometric sensor for chromium (VI) determination

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Abstract

The development of rapid, miniature and high-sensitivity sensors to control the environment is a topical problem of analytical chemistry is a topical issue of analytical chemistry. The purpose of this paper is to create an ion-selective electrode for determining the chromium (VI). The electrode was formed by sequential electrochemical assembly. Chromotropic acid was used to form a stable compound with chromate ions. In order to create a highly developed electroactive surface, a polyaniline film was previously formed on the electrode. The tetraethoxysilane film was used as a semi-permeable membrane to prevent the washing out of modifier. This work studied the mechanism of analytic signal formation and proposed a possible structure of the final complex. The electrode allows determining the chromium concentration in the range of 10-6 %10-1 M. The method "introduced-found" and measurement data obtained by the method of spectrophotometry validate the results.

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CITATION STYLE

APA

Shibaev, A. Y., Shelkovnikov, V. V., Novolokov, K. Y., & Anishchenko, M. V. (2020). Potentiometric sensor for chromium (VI) determination. In Journal of Physics: Conference Series (Vol. 1611). Institute of Physics Publishing. https://doi.org/10.1088/1742-6596/1611/1/012031

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