Transition Metal Cations as Indicators of the Alkaloids Presence in a Test Sample Exposed to Stripping Voltammetry

Abstract

A new electrochemical express-analysis method based on the multisensor stripping voltammetry was developed. The stripping voltammetry method is one of the most informative, but its implementation requires preliminary sample preparation, which consists of cleaning the sample from organic substances that affect the voltammogram appearance. This ability to change behavior of an electrochemical system containing cations of various metals was proposed to be used in analyzing the alkaloids. The proposed method made it possible with high reliability to identify alkaloids in the studied samples and to determine the informative signs characterizing their presence in the test sample. Besides, the test system composition was also optimized taking into account the detected substances specifics. The proposed method differs from the existing ones, because instead of the multiple indicator electrodes each responsible for a specific informative feature, a single planar electrode is used being immersed in the test solution, where the transition metal ions are introduced into the background electrolyte, as they are able to form complexes with the sample substances. Substances of the different chemical classes are determined by comparing a sample voltammogram with the electronic database. The method was implemented in a portable electroanalytical system in the "electronic tongue" and "electronic nose" formats

Please cite this article in English as:

Petrenko E.M., Semenova V.A. Transition metal cations as indicators of the alkaloids presence in a test sample exposed to stripping voltammetry. Herald of the Bauman Moscow State Technical University, Series Natural Sciences, 2024, no. 1 (112), pp. 104--117 (in Russ.). EDN: GJMMJN

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