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New bromide‐selective membrane electrodes based on a methyl methacrylate matrix and their use in drug analysis
Author(s) -
Pastor Tibor J.,
Pastor Milka M.,
Kalajdžievski Krume
Publication year - 1990
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140020409
Subject(s) - potentiometric titration , bromide , electrode , methyl methacrylate , ion selective electrode , membrane , chemistry , selectivity , methacrylate , bromine , inorganic chemistry , organic chemistry , polymer , biochemistry , monomer , copolymer , catalysis
Abstract A new, simple procedure for the preparation of methyl methacrylate‐based bromide ion‐selective membrane electrodes with an internal solid contact is described. The stability, response range, and slope as well as the selectivity and interference‐free pH range of these electrodes were found to be satisfactory. The electrodes were applied to the determination of low bromine levels in biologically active substances with direct potentiometry and potentiometric titration after their combustion in an oxygen atmosphere. The results obtained are accurate and reproducible.