Selective sorption of alkali-metal cations by carboxylic acid resins containing acyclic or cyclic polyether units

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Analytical Chemistry (Washington); (USA)

DOI:https://doi.org/10.1021/ac00220a006· OSTI ID:6105148

Hayashita, Takashi; Goo, Mija; Lee, Jong Chan; Kim, Jong Seung; Krzykawski, J; Bartsch, R A ^[1]

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1. Texas Tech Univ., Lubbock (USA)

Novel ion-exchange resins have been prepared by condensation polymerization with formaldehyde in formic acid of three polyether carboxylic acids which possess two benzo group substituents. The selectivities and efficiencies of competitive alkali-metal cation sorption from aqueous solutions by these polyether carboxylic acid resins are strongly influenced by (1) the pH of the aqueous solution, (2) the acyclic or cyclic nature of the polyether unit, and (3) the conformational positioning of the carboxylic acid group in the resins derived from cyclic polyether (crown ether) compounds. Good sorption selectivity for Na{sup +} was observed for dibenzo-16-crown-5 resin 3 in which the pendant carboxylic acid group is oriented over the polyether cavity. Resin 3 was utilized as a stationary phase for selective column concentration of Na{sup +} from dilute aqueous solution.

• OSTI ID: 6105148
• Journal Information: Analytical Chemistry (Washington); (USA), Journal Name: Analytical Chemistry (Washington); (USA) Vol. 62:21; ISSN 0003-2700; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ALKALI METALS
AQUEOUS SOLUTIONS
CARBOXYLIC ACIDS
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
ION EXCHANGE MATERIALS
MATERIALS
MEASURING METHODS
METALS
MIXTURES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
SODIUM
SOLUTIONS
SORPTION