Abstract
A piece of fused-silica fibre coated with silica modified with ketamine-groups was used as a solidphase microextraction (SPME) fibre and its efficiency in the qualitative and quantitative analysis of volatile organic compounds released from coloured overprinting on DVDs was evaluated. The effect of the parameters that can affect the SPME procedure, such as extraction time, extraction temperature, desorption temperature, was investigated to determine the analytical performance of this novel fibre in the qualitative and quantitative analyses of organic compounds. The optimised procedure was applied to the qualitative and quantitative analyses of organic compounds released from coloured overprinting on DVDs. The limit of detection of 4-methoxyphenol (mequinol) was 88 × 10−3 μg mL−1, while the limit of quantification (LOQ) was calculated as ten times the baseline noise, i.e. 3.1 × 10−1 μg mL−1. The proposed fibre was used successfully for preconcentration of the volatile organic compounds from the gaseous phase of DVD samples.
[1] Arthur, C. L.,& Pawliszyn, J. (1990). Solid phase microextraction with thermal desorption using fused silica optical fibres. Analytical Chemistry, 62, 2145–2148. DOI:10.1021/ac00218a019. http://dx.doi.org/10.1021/ac00218a01910.1021/ac00218a019Search in Google Scholar
[2] da Silveira, C. B., de Oliveira, A. F., de Campos, S. D., de Campos, É. A., & Carasek, E. (2005). Glass fibres coated with Nb2O5 for use in SPME. Colloids and Surfaces A: Physicochemistry and Engineering Aspects, 259, 15–22. DOI:10.1016/j.colsurfa.2004.12.065. http://dx.doi.org/10.1016/j.colsurfa.2004.12.06510.1016/j.colsurfa.2004.12.065Search in Google Scholar
[3] de Souza, M. M., Bortoluzzi, J. H., & Carasek, E. (2006). Thermal immobilization of poly(butylacrylate) on glass-ceramic rod for preparation of solid phase microextraction fibres. Microchim Acta, 155, 465–469. DOI: 10.1007/s00604-006-0582-1. http://dx.doi.org/10.1007/s00604-006-0582-110.1007/s00604-006-0582-1Search in Google Scholar
[4] Djozan, Dj.,& Assadi, Y. (2004). Modified pencil lead as a new fibre for solid-phase microextraction. Chromatographia, 60, 313–317. DOI: 10.1365/s10337-004-0368-8. 10.1365/s10337-004-0368-8Search in Google Scholar
[5] Farajzadeh, M. A.,& Matin, A. A. (2008). Determination of BTEX in water samples with an SPME hollow fibre coated copper wire. Chromatographia, 68, 443–446. DOI:10.1365/s10337-008-0726-z. http://dx.doi.org/10.1365/s10337-008-0726-z10.1365/s10337-008-0726-zSearch in Google Scholar
[6] Gierak, A., Seredych, M.,& Bartnicki, A. (2006). The preparation, properties and application of carbon fibre for SPME. Talanta, 69, 1079–1087. DOI: 10.1016/j.talanta.2005.12.025. http://dx.doi.org/10.1016/j.talanta.2005.12.02510.1016/j.talanta.2005.12.025Search in Google Scholar
[7] Hawthorne, S. B., Miller, D. J., Pawliszyn, J.,& Arthur, C. L. (1992). Solventless determination of caffeine in beverages using solid-phase microextraction with fused-silica fibres. Journal of Chromatography A, 603, 185–191. DOI: 10.1016/0021-9673(92)85360-6. http://dx.doi.org/10.1016/0021-9673(92)85360-610.1016/0021-9673(92)85360-6Search in Google Scholar
[8] Pawliszyn, J. (1997). Solid phase microextraction: Theory and practice. New York, NY, USA: Wiley-VCH. Search in Google Scholar
[9] Rykowska, I., Wasiak, W.,& Byra, J. (2008). Extraction of copper ions using silica gel with chemically modified surface. Chemical Papers, 28, 255–259. DOI: 10.2478/s11696-008-0020-4. http://dx.doi.org/10.2478/s11696-008-0020-410.2478/s11696-008-0020-4Search in Google Scholar
[10] Sun, T. H., Cao, L. K.,& Jia, J. P. (2005). Novel activated carbon fibre solid-phase microextraction for determination of benzyl chloride and related compounds in water by gas chromatography-mass spectrometry. Chromatographia, 61, 173–179. DOI: 10.1365/s10337-004-0481-8. http://dx.doi.org/10.1365/s10337-004-0481-810.1365/s10337-004-0481-8Search in Google Scholar
[11] Wan, H. B., Chi, H., Wong, M. K.,& Mok, C. Y. (1994). Solidphase microextraction using pencil lead as sorbent for analysis of organic pollutants in water. Analytica Chimica Acta, 298, 219–223. DOI: 10.1016/0003-2670(94)00270-3. http://dx.doi.org/10.1016/0003-2670(94)00270-310.1016/0003-2670(94)00270-3Search in Google Scholar
[12] Wang, S., Wang, Y., You, H.,& Yao, J. (2006). Preparation of a carbon-coated SPME fibre and application to the analysis of BTEX and halocarbons in water. Chromatographia, 63, 365–371. DOI: 10.1365/s10337-006-0750-9. http://dx.doi.org/10.1365/s10337-006-0730-010.1365/s10337-006-0750-9Search in Google Scholar
© 2011 Institute of Chemistry, Slovak Academy of Sciences
