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Direct Potentiometric Determination of Hydrogen Carbonate in Mineral Waters
Author(s) -
Dabrowska Sylwia,
Migdalski Jan,
Lewenstam Andrzej
Publication year - 2017
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.201600551
Subject(s) - potentiometric titration , carbonate , chemistry , bicarbonate , potentiometric sensor , inorganic chemistry , plasticizer , ammonium bicarbonate , mineral water , matrix (chemical analysis) , ion exchange , ammonium , electrode , materials science , ion , chromatography , metallurgy , organic chemistry , raw material
Properties of membranes based on quaternary ammonium salts as an ion‐exchanger were investigated. The analytical performance of electrodes was studied by potentiometric measurements. All developed electrodes showed a near‐Nernstian response. However, the best analytical properties were observed for the electrode with DOS plasticizer. The influence of sample matrix components was estimated by Plackett‐Burman experimental design. The effect of five different potential interferents – concentration of anions, which usually exist in mineral water – was examined. The proposed potentiometric sensor was successfully applied for the determination of hydrogen carbonate (bicarbonate) in mineral water samples.