Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD
6 pages, 4 figures, 3 tables.-- PMID: 12769515 [PubMed].-- Printed version published Jun 4, 2003.
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| Format: | artículo biblioteca |
| Language: | English |
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American Chemical Society
2003-05-07
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| Subjects: | SPME-headspace, TCA, GC-ECD, Internal standard selection, Wine, Matrix effect, Musty odor, |
| Online Access: | http://hdl.handle.net/10261/19893 |
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dig-idaea-es-10261-198932019-02-15T11:38:24Z Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD Alzaga Morales, Roberto Ortiz, Laura Sánchez Baeza, Francisco J. Marco, María Pilar Bayona Termens, Josep María SPME-headspace TCA GC-ECD Internal standard selection Wine Matrix effect Musty odor 6 pages, 4 figures, 3 tables.-- PMID: 12769515 [PubMed].-- Printed version published Jun 4, 2003. A headspace solid-phase microextraction (HS-SPME) procedure at 30 °C with a 100 μm PDMS fiber of a saturated NaCl solution stirred at 1100 rpm combined to GC-ECD for the 2,4,6-trichloroanisol (TCA) determination in wines has been developed. Due to the matrix complexity and ethanol absorption into the fiber, the internal standard selection was crucial to obtain unbiased results. Thus, matrix effects were observed when analyzing different types of Spanish wines (white, early, and vintage red wines) spiked with TCA at low concentration levels (i.e., <40 ng L-1). In contrast, the use of 2,4,6-tribromoanisole (TBA) as internal standard overcame these matrix effects, whereas the use of 2,4,6-trichlorophenyl ethyl ether led to inconsistent results. The developed HS-SPME-GC-ECD methodology reaches a limit of quantitation for TCA in wine within 2.9−18 ng L-1, with a relative standard deviation of 2.5−13.4%, depending on the TCA concentration level and wine characteristics. This analytical method is comparable to the existing methodologies based on HS-SPME followed by GC-MS in terms of accuracy, precision, length of determination, and length of quantification; however, analysis cost is reduced. Research funding was obtained from the I.N.I.A of the Spanish Ministry of Science and Technology (VIN00-053-C3-2). Peer reviewed 2010-01-07T08:39:57Z 2010-01-07T08:39:57Z 2003-05-07 artículo http://purl.org/coar/resource_type/c_6501 Journal of Agricultural and Food Chemistry 51(12): 3509–3514 (2003) 0021-8561 http://hdl.handle.net/10261/19893 10.1021/jf0211682 1520-5118 en http://dx.doi.org/10.1021/jf0211682 none 22195 bytes application/pdf American Chemical Society |
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biblioteca |
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Biblioteca del IDAEA España |
| language |
English |
| topic |
SPME-headspace TCA GC-ECD Internal standard selection Wine Matrix effect Musty odor SPME-headspace TCA GC-ECD Internal standard selection Wine Matrix effect Musty odor |
| spellingShingle |
SPME-headspace TCA GC-ECD Internal standard selection Wine Matrix effect Musty odor SPME-headspace TCA GC-ECD Internal standard selection Wine Matrix effect Musty odor Alzaga Morales, Roberto Ortiz, Laura Sánchez Baeza, Francisco J. Marco, María Pilar Bayona Termens, Josep María Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD |
| description |
6 pages, 4 figures, 3 tables.-- PMID: 12769515 [PubMed].-- Printed version published Jun 4, 2003. |
| format |
artículo |
| topic_facet |
SPME-headspace TCA GC-ECD Internal standard selection Wine Matrix effect Musty odor |
| author |
Alzaga Morales, Roberto Ortiz, Laura Sánchez Baeza, Francisco J. Marco, María Pilar Bayona Termens, Josep María |
| author_facet |
Alzaga Morales, Roberto Ortiz, Laura Sánchez Baeza, Francisco J. Marco, María Pilar Bayona Termens, Josep María |
| author_sort |
Alzaga Morales, Roberto |
| title |
Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD |
| title_short |
Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD |
| title_full |
Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD |
| title_fullStr |
Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD |
| title_full_unstemmed |
Accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by GC-ECD |
| title_sort |
accurate determination of 2,4,6-trichloroanisole in wines at low parts per trillion by solid-phase microextraction followed by gc-ecd |
| publisher |
American Chemical Society |
| publishDate |
2003-05-07 |
| url |
http://hdl.handle.net/10261/19893 |
| work_keys_str_mv |
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