Potentiometric detection of monovalent anions separated by ion chromatography using all solid-state contact PVC matrix membrane electrode


IŞILDAK İ.

CHROMATOGRAPHIA, cilt.49, ss.338-342, 1999 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 49
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1007/bf02467567
  • Dergi Adı: CHROMATOGRAPHIA
  • Sayfa Sayıları: ss.338-342

Özet

An all solid-state contact tubular PVC-matrix membrane electrode has been applied for potentiometric detection of inorganic and organic monovalent anions using phosphate and hydrogen phosphate eluents at low concentrations. This is a "monovalent detection method" as the selectivity of the electrode towards monovalent anions results in some other anions being undetected unless the concentration of those other anions is higher than 10(-3) mol dm(-3) in the sample solution injected. It takes only eight minutes to complete the separation with a good resolution. Theoretical and practical considerations are discussed, and in particular, sensitivity, linearity, detection limit and dynamic behaviour are presented.