Chelating polycalixarene for the chromatographic separation of Ga(III), In(III) and Tl(III)

A chelating polycalixarene has been synthesised by introducing the hydroxamate chelating group into the calixarene units and its analytical applications studied. The synthesised polycalixarene is used for the sorption and chromatographic separation of group 13 metal ions, Ga(III), In(III) and Tl(III...

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Bibliographic Details
Published in:Reactive & functional polymers 2002-12, Vol.53 (2), p.143-156
Main Authors: Gidwani, M.S, Menon, S.K, Agrawal, Y.K
Format: Article
Language:English
Subjects:
Applied sciences
Column separation
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
Gallium
Indium
Polycalixarene
Polymer industry, paints, wood
Technology of polymers
Thallium
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Summary:A chelating polycalixarene has been synthesised by introducing the hydroxamate chelating group into the calixarene units and its analytical applications studied. The synthesised polycalixarene is used for the sorption and chromatographic separation of group 13 metal ions, Ga(III), In(III) and Tl(III). For the quantitative sorption and recovery of Ga(III), In(III) and Tl(III), the optimum pH and eluants are pH 3.5–4.0 and 2 M HCl for Ga(III), pH 5.5–6.0 and 0.5 M HCl for In(III) and pH 7.0–7.5 and 1 M HCl for Tl(III). The t 1/2 values for Ga(III), In(III) and Tl(III) were determined. The effects of various electrolytes such as NaCl, NaNO 3, Na 2SO 4, NH 4Cl, NH 4NO 3, CH 3COONa and sodium tartarate on the sorption of the metals were studied.
ISSN:1381-5148
DOI:10.1016/S1381-5148(02)00169-4