Use of masking agents in promoting selective transport of Zn{sup +2} through Nafion membrane
- Bhabha Atomic Research Centre, Mumbai (India). Analytical Chemistry Div.
The effect of H{sup +} ion concentration on the ion-exchange selectivity of Nafion 117 cation-exchange membrane toward Zn{sup 2+}, Pb{sup 2+}, Cu{sup 2+}, Al{sup 3+}, and Fe{sup 3+} have been studied. A selective transport of any particular metal ion was not possible by controlling the pH alone. However, selective permeation of Zn{sup 2+} across the membrane could be accomplished by selectively masking the metal ion as the cationic 1,10-phenanthroline complex while the permeation of other interfering ions could be suppressed by masking them as their anionic EDTA complex. About 20% of Zn{sup 2+} selectively permeated from the mixture in 6 hours and the quantity increased to 67% after 60 hours of permeation.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 293024
- Journal Information:
- Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 15 Vol. 33; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
Similar Records
Specific membrane transport of mercury as [Hg(SCN){sub 4}]{sup 2{minus}} ion using K{sup +}-dibenzo-18-crown-6 as carrier
COMPLEXOMETRIC TITRATIONS (CHELATOMETRY). XLIII. MASKING OF DIVALENT METALS WITH O-PHENANTHROLIN. SELECTIVE DETERMINATION OF LEAD AND ALUMINUM