Liquid chromatographic method and apparatus with a packed tube m

Details Liquid chromatographic method and apparatus with a packed tube m Liquid chromatographic method and apparatus with a packed tube m

1986-04-25

1988-06-14

Spear, Frank

Liquid purification or separation

Processes

Chromatography

422 70, B01D 1508

Patent

active

047510048

ABSTRACT:
Packing tube membranes or membrane channels for Ion Chromatography with inert or charged ion exchange beads greatly increases overall suppressor efficiency. The length of membrane required is reduced, e.g. from 20 feet to 5 feet and bandspreading is reduced from 870 .mu.l to 200 .mu.l. This significant increase in efficiency is attributed to the mixing action of the packing on the flow stream which results in convective radial transport much more rapid than the diffusion controlled transport observed in unpacked membranes. The technique is also described for developing more efficient liquid chromatographic post-column reactors for adding reagent to the column effluent to increase detection sensitivity.

REFERENCES:
patent: 3186941 (1965-06-01), Skiens
patent: 3228876 (1966-01-01), Mahon
patent: 3256678 (1966-06-01), Bertin et al.
patent: 3598728 (1971-08-01), Bixler et al.
patent: 4247393 (1981-01-01), Wallace
patent: 4265634 (1981-05-01), Pohl
patent: 4474664 (1984-10-01), Stevens et al.
Abstract B. 26 from the McSAC-Conference of Jul. 20-26, 1980, Lancaster, England, "Dispersion in Tubes Under Conditions Used in Flow Injection Analysis, " J. M. Reijn et al.
Analytica Chimica Acta. 123 (Jan., 1981), 229-337, "Dispersion in Open Tubes and Tubes Packed with Large Glass Beads," Reijn et al.
Analytica Chimica Acta, 126 (May, 1981), 1-13, "Transport Phenomena in Flow Injection Analysis Without Chemical Reaction," Reijn et al.
Savage, W. F., Saline Water Conversion Report for 1970-1971, pp. 96-98.

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