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Adsorption and Separation of Ag(I) Using a Merrifield Resin Bound NTOE, NDOE in Aqueous Solution
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1999, v.12 no.2, pp.159-165
Lee,
C., &
Kim,
H.
J.
(1999). Adsorption and Separation of Ag(I) Using a Merrifield Resin Bound NTOE, NDOE in Aqueous Solution. Analytical Science and Technology, 12(2), 159-165.
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Abstract
The adsorption and separation behaviors of transition metal ions using a merrifield resin bound 1,12-diaza-3,4:9,10-dibenzo-5,8-dioxacyclopentadecane (NTOE) and 1,12,15-triaza-3,4:9,10-dibenzo-5,8-dioxacycloheptadecane(NDOE) were investigated in aqueous solution. The orders of adsorption degree(E) and distribution ratio(D) of transition metal ions were Cu(II)<Ni(II)<Co(II)<Zn(II)<Cd(II)<Pb(II)<Ag(I), the magnitudes were found to be inversely proportional to the hydration free energy of transition metal ions. Also, from the elution curves for Co(II)-Cd(II)-Ag(I), Ni(II)-Cu(II)-Pb(II) and Zn(II)-Cd(II)-Pb(II)-Ag(I) mixed metal solution, the retention times(<TEX>$t_R$</TEX>) of metal ions were affected by adsorption degree(E) and distribution ratio(D). This results showed good separation efficiency of Ag(I) from mixed metal solution.
- keywords
- merrifield resin bound NTOE and NDOE, adsorption degree, distribution ratio, hydration free energy of transition metal ions
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