Application of polyurethane foam as a sorbent for trace metal pre-concentration — A review
The first publication on the use of polyurethane foam (PUF) for sorption processes dates back to 1970, and soon after the material was applied for separation processes. The application of PUF as a sorbent for solid phase extraction of inorganic analytes for separation and pre-concentration purposes...
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| Veröffentlicht in: | Spectrochimica acta. Part B: Atomic spectroscopy 2007, Vol.62 (1), p.4-12 |
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| container_title | Spectrochimica acta. Part B: Atomic spectroscopy |
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| creator | Lemos, V.A. Santos, M.S. Santos, E.S. Santos, M.J.S. dos Santos, W.N.L. Souza, A.S. de Jesus, D.S. das Virgens, C.F. Carvalho, M.S. Oleszczuk, N. Vale, M.G.R. Welz, B. Ferreira, S.L.C. |
| description | The first publication on the use of polyurethane foam (PUF) for sorption processes dates back to 1970, and soon after the material was applied for separation processes. The application of PUF as a sorbent for solid phase extraction of inorganic analytes for separation and pre-concentration purposes is reviewed. The physical and chemical characteristics of PUF (polyether and polyester type) are discussed and an introduction to the characterization of these sorption processes using different types of isotherms is given. Separation and pre-concentration methods using unloaded and loaded PUF in batch and on-line procedures with continuous flow and flow injection systems are presented. Methods for the direct solid sampling analysis of the PUF after pre-concentration are discussed as well as approaches for speciation analysis. Thermodynamic proprieties of some extraction processes are evaluated and the interpretation of determined parameters, such as enthalpy, entropy and Gibbs free energy in light of the physico-chemical processes is explained. |
| doi_str_mv | 10.1016/j.sab.2006.12.006 |
| format | Article |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | AAS ICP Metals Polyurethane foam Pre-concentration |
| title | Application of polyurethane foam as a sorbent for trace metal pre-concentration — A review |
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