Chromatographic apparatus for analysis of ionic species

Details Chromatographic apparatus for analysis of ionic species Chromatographic apparatus for analysis of ionic species

1975-09-08

1977-04-12

Scovronek, Joseph

Chemistry: physical processes

Physical processes

Crystallization

73 611C, 210284, 210294, G01N 2708, G01N 3104, G01N 3108

Patent

active

040172627

ABSTRACT:
Apparatus and method for chromatographic quantitative analysis of a solution containing a plurality of species of cations. A sample of the solution is added to a first ion exchange resin bed containing cation exchange resin and eluted therefrom with a solution of developing reagent consisting of either AgNO.sub.3 or BaCl.sub.2, chromatographic separation of the cationic species being achieved as elution proceeds. The effluent from the first ion exchange resin bed is passed through a second ion exchange resin bed containing anion exchange resin in a form appropriate to the precipitation of whichever metal ion is provided by the developing reagent, i.e., chloride or sulfate forms. As elution proceeds the cations exit from the second ion exchange bed without destroying the ionic separation achieved in the first ion exchange resin bed. Each separated cationic species is quantitatively sensed by a detector such as a conductivity cell on exiting from the second ion exchange resin bed.

REFERENCES:
patent: 2422054 (1947-06-01), Tiger
patent: 2938868 (1960-05-01), Carlson
patent: 3382034 (1968-05-01), Kraus
patent: 3686117 (1972-08-01), Lauer
patent: 3694369 (1972-09-01), Orlandini

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