Unloaded polyether type polyurethane foams as solid extractants for trace elements

S. Palágyi; T. Braun

doi:10.1007/bf02037481

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 163: Issue 1

Unloaded polyether type polyurethane foams as solid extractants for trace elements

Authors:

S. Palágyi

S. Palágyi Institute of Radioecology and Applied Nuclear Techniques P.O. Box A-41 040 61 Kosice (Czecho-Slovakia)

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T. Braun

T. Braun L. Eötvös University Institute of Inorganic and Analytical Chemistry 112 P.O. Box 32 H-1518 Budapest (Hungary)

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Pages:: 69–79

Online Publication Date:: 14 Aug 2005

Publication Date:: 17 Nov 1992

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02037481

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Abstract

Polyether type polyurethane foams (PU) are regular stacks of solid quasi-spherical membranes produced by the reaction of polyisocyanates with polyols of polyether nature in the presence of a catalyst and a blowing agent. Contrary to conventional membrane separations, where a solid membrane is merely a differentially separating agent, or a transport medium, PU foams, apart from separation and preconcentration, also retain, i.e., sorb the species on, or in the membranes. Therefore, PU foam membranes can be considered to act as true sorbents. The membrane properties of PU foam sorbents offer unique advantages over conventional bulk type granular sorbents in rapid, versatile and effective separations and preconcentrations of different compounds from fluid samples. Unloaded PU foam sorbents have received considerable attention in the separation of different trace inorganic species.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)