Universal Detection of Ions by Replacement-Ion Chromatography Employing an Anion-Replacement Method and an Ultraviolet-Visible Spectrophotometric Detector.

Abstract

A new ion-chromatographic (IC) detection method involving replacement-ion chromatography (RIC) and an anion-replacement arrangement is employed for cation and anion analysis. In the instrument, a conventional dual-column IC system is followed by a continuously regenerated anion-exchange (ionomeric) fiber, which serves as the replacement column. This third column converts all ionic solutes into their iodate or nitrate salts, which are detected sensitively at 215 nm by a UV-visible spectrophotometer. This detection method is especially useful for cation separation, for which the influence of various system parameters are discussed in detail. Good precision (RSD<5%), low detection limits (1-15 ng), and universal calibration were achieved for several monovalent cations. However, the method does not appear to be useful for anion determinations. Keywords: Ion chromatography; Replacement ion chromatography; Chromatographic detectors.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 22, 1988
Accession Number
ADA191326

Entities

People

  • Gary M. Hieftie
  • Leonard J. Galante

Organizations

  • Indiana University

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alkali Metals
  • Chemical Compounds
  • Chemistry
  • Detection
  • Detectors
  • Equations
  • Flow Rate
  • Ion Exchange
  • Materials
  • Measurement
  • Military Research
  • Monitoring
  • Physical Chemistry
  • Regression Analysis
  • Schematic Diagrams
  • Separators
  • United States

Fields of Study

  • Chemistry

Readers

  • Analytical Chemistry