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

Journal Article · Thu Nov 01 00:00:00 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]

---

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), Vol. 62:21; ISSN 0003-2700
• Country of Publication: United States
• Language: English

Related Subjects

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