Actas de congresos
Preparation And Characterization Of Polydimethylsiloxane/poly(vinylalcohol) Coated Solid Phase Microextraction Fibers Using Sol-gel Technology
Registro en:
Journal Of Chromatography A. , v. 1056, n. 1-2 SPEC.ISS., p. 13 - 19, 2004.
219673
10.1016/j.chroma.2004.05.047
2-s2.0-8644226231
Autor
Lopes A.L.
Augusto F.
Institución
Resumen
The applicability of a composite composed of polydimethylsiloxane (PDMS) and poly(vinyl alcohol) (PDMS/PVA) as coating sorbent for SPME fibers is demonstrated here. Fused silica (FS) fibers were coated with PDMS/PVA composite through a sol-gel process, using methyltrimethoxysilane as reticulating agent. The chemical and physical properties of the sol-gel PDMS/PVA composite were determined by infrared spectroscopy and thermogravimetric analysis. Electron scanning microscopy of the prepared fibers, showed that the coating obtained was highly microporous, having a thickness of approximately 5 μm. The fibers were tested for the headspace extraction of several organic compounds (o-xylene, naphthalene, ethyl caprate, p-chlorotoluene and PCB) prior to gas chromatographic analysis. The extractive capacity of the PDMS/PVA coating was found to be superior to that of pure conventional PDMS fibers. © 2004 Elsevier B.V. All rights reserved. 1056 1-2 SPEC.ISS. 13 19 Zhang, Z., Yang, M.J., Pawliszyn, J., (1994) Anal. Chem., 66, pp. 844A Pawliszyn, J., (1997) Solid Phase Microextraction: Theory and Practice, , Wiley, VCH, New York Arthur, C.L., Killam, L.M., Buchholz, K.D., Pawliszyn, J., Berg, J.R., (1992) Anal. Chem., 64, p. 1960 (1999) How to Choose the Proper SPME Fiber (Report), , Bellefonte Liu, Y., Shen, Y.F., Lee, M.L., (1997) Anal. Chem., 69, p. 190 Liu, Y., Lee, M.L., Hageman, K.J., Yang, Y., Hawthorne, S.B., (1997) Anal. Chem., 69, p. 5001 Farajzadeh, M.A., Hatami, M., (2003) J. Sep. Sci., 26, p. 802 Mangani, F., Cenciarini, R., (1995) Chromatographia, 41, p. 678 Yuan, H., Mullett, W.M., Pawliszyn, J., (2001) Analyst, 126, p. 1456 Mullett, W.M., Pawliszyn, J., (2002) Anal. Chem., 74, p. 1081 Wu, J., Mullett, W.M., Pawliszyn, J., (2002) Anal. Chem., 74, p. 4855 Malik, A., Sol-gel technology for thermally stable coatings in SPME (1999) Applications of Solid Phase Microextraction, , J. Pawliszyn (Ed.), RSC, Cambridge Schubert, U., Hüsing, N., Lorenz, A., (1995) Chem. Mater., 7, p. 2010 Wang, D., Chong, S.L., Malik, A., (1997) Anal. Chem., 69, p. 4566 Hayes, J.D., Malik, A., (1997) J. Chromatogr. B, 695, p. 3 Schedl, M., Wilharm, G., Achatz, S., Kettrup, A., Niessner, R., D, Knopp (2001) Anal. Chem., 73, p. 5669 Keeling-Tucker, T., Rakic, M., Spong, C., Brennan, J.D., (2000) Chem. Mater., 12, p. 3695 Chong, S.L., Wang, D., Hayes, J.D., Wilhite, B.W., Malik, A., (1997) Anal. Chem., 69, p. 3889 Nakane, K., Jamashita, T., Iwakura, K., Suzuki, F., (1999) J. Appl. Polym. Sci., 74, p. 133 Cajlakovic, M., Lobnik, A., Werner, T., (2002) Anal. Chim. Acta, 455, p. 207 Silverstein, R.M., Bassler, G.C., (1967) Spectrometric Identification of Organic Compounds, Second Ed., , Wiley, New York Maruyama, K., Yagi, M., Tanizaki, Y., (1986) Polym. Commun., 27, p. 349 Mani, V., Properties of commercial SPME coatings (1999) Applications of Solid Phase Microextraction, , J. Pawliszyn (Ed.), RSC, Cambridge Meurer, E.C., Tomazela, D.M., Silva, R.C., Augusto, F., Eberlin, M.N., (2002) Anal. Chem., 74, p. 5688