ion-selective electrode

ISE on Vitamin B6

Authors: Varygina O. V., Chernova R. K., Сusina E. F.

Sensor obtained by ion associate of vitamin B6 with tetraphenylborate ion and determined its electrochemical characteristics. Method biionnyh potentials determined selectivity coefficients of the electrode. The method of determination of the main substance in the product «Pyridoxine hydrochloride».

Selective Determination of Histidine in Mixed Solutions of α-Amino Acids

Authors: Chernova R. K., Varygina O. V., Bereskina N. S.

Examined the condition of the main and neutral α-amino acids in aqueous media. Graphs of the distribution of ionized forms of histidine and alanine with varying pH. Pakistan the possibility of pH –metric selective determination of histidine in mixtures of neutral amino acid with a glass indicator electrode. The error does not exceed 7%