Detection of Ions by Replacement-Ion Chromatography Coupled to a Microwave-Induced Nitrogen Discharge at Atmospheric Pressure

Abstract

The capabilities and limitations of replacement-ion chromatography (RIC) employing a lithium-based replacement method and a microwave-induced nitrogen discharge at atmospheric pressure (MINDAP) as the detector are critically evaluated for the determination of anions and cations. The system, including chromatographic columns, interface, and plasma-emission source provides absolute detection limits of 30-300 ng for anions and 100-500 ng for cations. Detectability and precision of the instrument are ultimately limited by multiplicative noise sources. The limitations imposed by multiplicative noise on RIC detection are assessed, and guidelines are presented that will allow judicious choice of alternative RIC detectors in the future. Ion chromatography, Spectroscopic detection, Speciation, Multielement analysis, Microwave plasma.

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Document Details

Document Type
Technical Report
Publication Date
Jul 11, 1988
Accession Number
ADA198800

Entities

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  • Daniel A. Wilson
  • Gary M. Hieftje
  • Leonard J. Galante

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  • Indiana University

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