Isopotential available ion extractor

Details Isopotential available ion extractor Isopotential available ion extractor

1987-11-27

1989-03-28

Cintins, Ivars

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210669, 210266, 210282, 21032187, 422 61, 422101, 436178, B01D 1504

Patent

active

048161616

ABSTRACT:
A reusable extractor for obtaining a representative sample of the exchangeable ions from a complex heterogeneously saturated ion exchange system such as soil or other complex and colloidal matrices at various oxidation-reduction potentials without the need for costly extraction and purification steps. The extractor comprises a microporous dialysis membrane tube filled with cation- or anion-exchange resin beads. Extraction is effected by equilibrating homoionically saturated ion-exchange resin beads with a sample of the complex matrix under study. The extractor enables simple, rapid, multiple-element assays and provides the new capability of extracting exchangeable ions from stream, lake, and marine sediments in situ.

REFERENCES:
patent: 3240067 (1966-03-01), Jongejan
patent: 3862576 (1975-01-01), Pogorski
patent: 4201549 (1980-05-01), Tepe et al.
patent: 4298475 (1981-11-01), Gartner
patent: 4303610 (1981-12-01), Sardisco et al.
patent: 4636307 (1987-01-01), Inoue et al.
patent: 4647380 (1987-03-01), Dasgupta

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