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INFLUENCE OF MEDIUM POLARITY UPON SELECTIVITY AND EFFICIENCY OF ALKALI-METAL CATION SORPTION BY POLYETHER CARBOXYLIC-ACID RESINS
- Issue Date
- Jul-1992
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- TALANTA, v.39, no.7, pp 857 - 862
- Pages
- 6
- Journal Title
- TALANTA
- Volume
- 39
- Number
- 7
- Start Page
- 857
- End Page
- 862
- ISSN
- 0039-9140
1873-3573
- Abstract
- The influence of medium polarity upon competitive sorption of alkali-metal cations from aqueous and aqueous methanolic solutions by the polymethacrylic acid resin Amberlite CG-50, two acyclic polyether carboxylic acid resins, and six sym-(alkyl)dibenzo-16-crown-5-oxyacetic acid resins has been investigated. Addition of methanol was found to strongly depress the selective Li+ sorption of CG-50 and one of the acyclic polyether carboxylic acid resins. Enhancement of metal ion-crown ether interactions as the percentage of methanol in the medium was increased accentuates the Na+ sorption selectivity for the lariat ether carboxylic acid resins. The highest Na+ sorption selectivity was obtained for sym-(alkyl)-dibenzo-16-crown-5-oxyacetic acid resins with ethyl and propyl groups in 80% methanol-20% water.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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