Filling of Analytical and Preparative Columns for Gas Chromatography.

Bayer, Ernst; Hupe, K. P.; Mack, Heinz.

doi:10.1021/ac60197a041

Cited by 29 publications

(1 citation statement)

References 9 publications

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“…Bayer and coworkers (42) separated component mixtures of as much as 500 grams in a single run and demonstrated that preparative columns of 5 to 10-cm. diameter can be prepared that are capable of producing separations as efficiently as 1-cm.…”

Section: Measurementsmentioning

confidence: 99%

Gas Chromatography

Juvet¹,

Nogare²

1964

Anal. Chem.

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This review surveys developments in gas chromatography since the publication of the last review in this series (115) and covers the years 1962-63.Gas chromatography continues to be one of the most active areas in analytical chemistry. More than 1860 articles and major addresses covering applications, theory, and apparatus were published in 1962, and this number exceeds 1800 in 1963. Between 1954 and the publication rate doubled approximately every two years; however, this extremely rapid

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Section: Measurementsmentioning

confidence: 99%

Gas Chromatography

Juvet¹,

Nogare²

1964

Anal. Chem.

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A new instrument for preparative gel permeation chromatography

Peyrouset¹,

Panaris²

1972

J of Applied Polymer Sci

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SynopsisA preparative liquid-phase chromatograph w&s built for the purpose of obtaining sufficiently large quantities of very narrow fractions of different polymeric species, such as polystyrene, PVC, polybutadiene, and polyethylene. This apparatus allows the fractionation of approximately 20 g of polymer per day; the fractions so obtained have polydispersities of about 1.1 over a very wide range of molecular weights. Polydispersities of less than 1.01 were obtained after recycling of the sample. DESCRIPTION AND CHARACTERISTICS OF THE PREPARATIVE CHROMATOGRAPHA preparative chromatograph can be divided into five components ( Fig. 1) which are (1) the pumping system; (2) the sample injector; (3) the columns; (4) the detector; (5) the fraction collector. We shall not describe in this paper the pumping system and the detector, which are directly based on the Waters analytical instrument.

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Micropreparative system for enrichment of capillary GC effluents

Nitz¹,

Drawert²,

Albrecht³

et al. 1988

J. High Resol. Chromatogr.

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SummaryAn automated system for preparative gas chromatography with capillary columns is described. The ellluent from the capillary column is switched to the FID detector or to the traps by means of a Live-T switching device. The pneumatics is controlled by a microprocessor so that repetitive sampling can be performed over a period of days in order to enrich sufficient amounts of material for NMR or other spectroscopic methods. The effluent containing the compounds is collected in glass tubes filled with column packing material (e. g-Chromosorb coated with 3 % OV -101, crosslinked). The trap temperatue can be adjusted from + 20 "C to -80 "C, depending on the trapping material and volatility of trapped substances. The analysis of enriched substances or chromatographic fractions can be performed by thermal desorption of the same traps or by solvent elution. The recovery of enriched substances is higher than 90%. High capacity and resolution for enrichment of trace components are obtained with the aid of a double column-double oven system. Examples of such applications are given.

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Filling of Analytical and Preparative Columns for Gas Chromatography.

Cited by 29 publications

References 9 publications

Gas Chromatography

Gas Chromatography

A new instrument for preparative gel permeation chromatography

Micropreparative system for enrichment of capillary GC effluents

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