Postcolumn techniques: A critical perspective for ion chromatography

Journal Article · Tue Aug 01 00:00:00 EDT 1989 · Journal of Chromatographic Science; (United States)

DOI:https://doi.org/10.1093/chromsci/27.8.422· OSTI ID:5481892

Dasgupta, P K ^[1]

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1. Texas Tech Univ., Lubbock, TX (United States)

Part I. General overview and systems with suppressors. Postcolumn techniques represent a particularly fast-growing area in ion chromatography (IC). The developments since 1985 are surveyed in this paper. A general overview of reagent introduction means, including membrane devices and reaction conduit designs - especially various geometrically deformed open tubular designs - is provided. Part II. Determination of metals, various ionic and ionizable species. This review discusses the direct and indirect absorptiometric, fluorometric, and electrochemical detection of metal species, including rare earth elements, alkyltin, and alkyllead compounds. Part III. New methods on the horizon. The final part of this three-part review discusses chemiluminescence detection. Photolytic methods for derivatization before electrochemical detection is suggested as an important avenue for exploration. The use of postcolumn reactors built of metal tubes, wires and powder for selective reductions, electrochemical generation of reagents, fluorescence enhancement by inclusion complex formation by cyclodextrins, the coupling of reversed-phase liquid chromatography to electron capture detectors, and post separation zone compression to sharpen otherwise broad chromatographic peaks are critically reviewed.

• DOE Contract Number: FG05-84ER13281
• OSTI ID: 5481892
• Journal Information: Journal of Chromatographic Science; (United States), Vol. 27; ISSN 0021-9665
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHROMATOGRAPHY
REVIEWS
CHEMILUMINESCENCE
DERIVATIZATION
DESIGN
ELECTRON-CAPTURE DETECTORS
IONS
LEAD COMPLEXES
ORGANOMETALLIC COMPOUNDS
RARE EARTHS
TIN COMPLEXES
CHARGED PARTICLES
CHEMICAL REACTIONS
COMPLEXES
DOCUMENT TYPES
ELEMENTS
LUMINESCENCE
MEASURING INSTRUMENTS
METALS
ORGANIC COMPOUNDS
RADIOMETRIC GAGES
SEPARATION PROCESSES
400105* - Separation Procedures