Selective retention properties to silver(I) and mercury(II) ions of poly(4-vinylpyridine) methyl iodide studied by the liquid-phase polymer-based retention technique

The retention of various metal ions by water‐soluble poly(4‐vinylpyridine) methyl iodide in conjunction with ultrafiltration membrane was investigated. The method is based on the retention of inorganic ions by this polymer in a membrane filtration cell and subsequent separation of low‐molecular weig...

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Bibliographic Details
Published in:Journal of applied polymer science 2001-06, Vol.80 (13), p.2578-2582
Main Authors: Rivas, B. L., Pereira, E. D.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
metal ions
Organic polymers
Physicochemistry of polymers
poly(4-vinylpyridine) methyl iodide
Properties and characterization
Solution and gel properties
ultrafiltration membranes
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Summary:The retention of various metal ions by water‐soluble poly(4‐vinylpyridine) methyl iodide in conjunction with ultrafiltration membrane was investigated. The method is based on the retention of inorganic ions by this polymer in a membrane filtration cell and subsequent separation of low‐molecular weight species from the polymer metal ion complex formed. It is shown that the polychelatogen can bind silver(I) and mercury(II) ions in aqueous solution at pH 1. At higher pH, the water‐soluble polymer can be applied to the separation and preconcentration of silver metal ions. Therefore, this polychelatogen is highly selective to Hg(II) at pH 1 with respect to metal ions such as Cd(II) and Zn(II). © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 2578–2582, 2001
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1368