Actas de congresos
Highly Porous Solid-phase Microextraction Fiber Coating Based On Poly(ethylene Glycol)-modified Ormosils Synthesized By Sol-gel Technology
Registro en:
Journal Of Chromatography A. , v. 1072, n. 1, p. 7 - 12, 2005.
219673
10.1016/j.chroma.2004.11.027
2-s2.0-16844371207
Autor
Gomes Da Costa Silva R.
Augusto F.
Institución
Resumen
The preparation and characteristics of solid-phase microextraction (SPME) fibers coated with Carbowax 20M ormosil (organically modified silica) are described here. Raw fused silica fibers were coated with Carbowax 20M-modified silica using sol-gel process. Scanning electron micrographs of fibers revealed a highly porous, sponge-like coating with an average thickness of (8 ± 1) μm. The sol-gel Carbowax fibers were compared to commercial fibers coated with 100 μm polydimethylsiloxane (PDMS) and 65 μm Carbowax-divinylbenzene (DVB). Shorter equilibrium times were possible with the sol-gel Carbowax fiber: for headspace extraction of the test analytes, they ranged from less than 3 min for benzene to 15 min for o-xylene. Extraction efficiencies of the sol-gel Carbowax fiber were superior to those of conventional fibers: for o-xylene, the extracted masses were 230 and 540% of that obtained with 100 μm PDMS and 65 μm Carbowax-DVB fibers, respectively. © 2004 Elsevier B.V. All rights reserved. 1072 1 7 12 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 Gbatu, P.T., Sutton, K.L., Caruso, J.A., (1999) Anal. Chim. Acta, 402, p. 67 Livage, J., Henry, M., Sanches, J., (1988) Solid State Chem., 19, p. 259 Schubert, U., Hüsing, N., Lorenz, A., (1995) Chem. Mater., 7, p. 2010 Fabes, B.D., Uhlmann, D.R.J., (1990) J. Am. Ceram. Soc., 73, p. 978 Yun, L., (2003) Anal. Chim. Acta, 486, p. 63 Chong, S.L., Wang, D., Hayes, J.D., Wilhite, B.W., Malik, A., (1997) Anal. Chem., 69, p. 3889 Lopes, A.L., Augusto, F., (2004) J. Chromatogr. a, 1056, p. 13 Yu, J., Dong, L., Wu, C., Wu, L., Xing, J., (2002) J. Chromatogr. a, 978, p. 37 Gbatu, T.P., Sutton, K.L., Caruso, J.A., (1990) Anal. Chim. Acta, 402, p. 67 Zeng, Z., Qiu, W., Huang, Z., (2001) Anal. Chem., 73, p. 2429 Li, X., Xeng, Z., Zhou, J., Gong, S., Wang, W., Chen, Y., (2004) J. Chromatogr. a, 1041, p. 1 Li, X., Zeng, Z., Zhou, J., (2004) Anal. Chim. Acta, 509, p. 27 Wang, Z., Xiao, C., Wu, C., Han, H., (2000) J. Chromatogr. a, 893, p. 157 Verzele, M., Sandra, P., (1978) J. Chromatogr., 158, p. 111 Poole, C.F., Li, Q., Kiridena, W., Koziol, W.W., (2000) J. Chromatogr. a, 898, p. 211 Cardoso, C.D., Copetti, M., Schwerz, L., Viaro, N., Adaime, M., (2000) J. Braz. Chem. Soc., 11, p. 191 Basso, M.A., Santos, M.J.T.F., Collins, K.E., Collins, C.H., (1989) J. High Resolut. Chromatogr. Commun., 7, p. 500 Silverstein, R.M., Bassler, G.C., (1967) Spectrometric Identification of Organic Compounds, , second ed. Wiley New York Vong, M.S.W., Bazin, N., Sermon, P.A., (1997) J. Sol-Gel Sci. Technol., 8, p. 499 Vigh, A., Bartha, J., Hlavay, J., (1981) J. High Resolut. Chromatogr., 4, p. 3 Sato, S., Murakata, T., Suzuki, T., Ohgawara, T., (1990) J. Mater. Sci., 25, p. 4880 Park, J.H., Oh, C., Shin, S.I., Moon, S.K., Oh, S.G., (2003) J. Colloid Interface Sci., 266, p. 107 Mani, V., (1999) Applications of Solid Phase Microextraction, , J. Pawliszyn J. Pawliszyn RSC Cambridge