Apparatus for pre-concentration of a sample for spectroscopical

Details Apparatus for pre-concentration of a sample for spectroscopical Apparatus for pre-concentration of a sample for spectroscopical

1989-11-30

1991-09-03

Cintins, Ivars

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

With rehabilitation means

210287, 422101, 422103, 436178, B01D 1504

Patent

active

050451960

ABSTRACT:
An apparatus for the pre-concentration of a sample substance for spectroscopical reasons in the flow injection analysis having an ion-exchanger column of conical shape filled with a granular ion-exchanger. For pre-concentration of the sample, the sample liquid flows through the ion-exchanger column from the smaller first end. Then the pre-concentrated elements are eluted by an eluting liquid from the wider second end. Therewith, a very low dispersion of the eluted sample slug results. Thus, a considerable increase in the degree of sensitivity can be achieved with high analysis frequency.

REFERENCES:
patent: 1745421 (1930-02-01), Higgins
patent: 3897213 (1975-07-01), Stevens et al.
patent: 4242097 (1980-12-01), Rich et al.

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