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Adsorption and Separation Behaviors of Metal Ions Using a Poly-Dibenzo-18-Crown-6 in Aqueous Solution
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1998, v.11 no.4, pp.248-253
Kim,
H. J., Chang,
J. H., &
Shin,
Y.
(1998). Adsorption and Separation Behaviors of Metal Ions Using a Poly-Dibenzo-18-Crown-6 in Aqueous Solution. Analytical Science and Technology, 11(4), 248-253.
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Abstract
The adsorption and separation behaviors of alkali, alkaline earth and transition metal ions using a poly-dibenzo-18-crown-6 were investigated in aqueous solution. The adsorption degree(E) and distribution ratio(D) of alkali, alkaline earth metal ions were Li(I)<Na(I)<K(I) and Mg(II)<Ca(II)<Sr(II), respectively. The adsorption degree(E) and distribution ratio(D) of transition metal ions was Cu(II)<Ni(II)<Co(II)<Cd(II)<Pb(II)<Ag(I). Also, from the elution curves for mixed metal solution of Li(I)-Na(I)-K(I), Mg(II)-Ca(II)-Sr(II), Cu(II)-Cd(II)-Ag(I) and Ni(II)-Co(II)-Pb(II), the retention time(<TEX>$t_R$</TEX>) of metal ions were affected by the adsorption degree(E) and distribution ratio(D). This results showed good separation efficiency of K(I), Sr(II), Ag(I) and Pb(II) from the mixed metal solution.
- keywords
- poly-dibenzo-18-crown-6, adsorption degree(E), distribution ratio(D)
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