Comparative study of silicone and microporous membranes for the separation of some phenols prior to high performance liquid chromatography analysis
✍ Scribed by María Esther Fernández Laespada; Lorenzo Calvo Seronero; José Luis Pérez Pavón; Carmelo García Pinto; Bernardo Moreno Cordero
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 132 KB
- Volume
- 24
- Category
- Article
- ISSN
- 1615-9306
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✦ Synopsis
Comparative study of silicone and microporous membranes for the separation of some phenols prior to high performance liquid chromatography analysis A membrane separation module has been coupled on-line to a high-resolution liquid chromatographic system. A microcomputer controls the set of operations required in the overall automatic process. Two types of membranes, homogeneous (silicone) and microporous with air-filled pores, have been investigated and the results obtained for five chlorophenols, of different polarities and volatilities, have been compared. The most important variables affecting the process are the composition of the donor and acceptor phases and the enrichment time. The method using the silicone membrane, was applied to the determination of the analytes in real water samples.