In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer
A portable mass spectrometer was coupled to a direct inlet membrane (DIM) probe and applied to the direct analysis of active fragrant compounds (3-methylbutyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and ethyl methyl sulfide) in real time. These fragrant active compounds are commonly used i...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Analytical Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/1780190 |
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| author | Fred P. M. Jjunju Stamatios Giannoukos Alan Marshall Stephen Taylor |
| author_facet | Fred P. M. Jjunju Stamatios Giannoukos Alan Marshall Stephen Taylor |
| author_sort | Fred P. M. Jjunju |
| collection | DOAJ |
| description | A portable mass spectrometer was coupled to a direct inlet membrane (DIM) probe and applied to the direct analysis of active fragrant compounds (3-methylbutyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and ethyl methyl sulfide) in real time. These fragrant active compounds are commonly used in the formulation of flavours and fragrances. Results obtained show that the portable mass spectrometer with a direct membrane inlet can be used to detect traces of the active fragrant compounds in complex mixtures such as essential fragrant oils and this represents a novel in-situ analysis methodology. Limits of detection (LOD) in the sub-ppb range (< 2.5 pg) are demonstrated. Standard samples in the gaseous phase presented very good linearity with RSD % at 5 to 7 for the selected active fragrant compounds (i.e., isoamyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and methyl ethyl sulphide). The rise and fall times of the DIM probe are in the ranges from 15 to 31 seconds and 23 to 41 seconds, respectively, for the standard model compounds analysed. The identities of the fragrance active compounds in essential oil samples (i.e., banana, tangerine, papaya, and blueberry muffin) were first identified by comparison with a standard fragrance compounds mixture using their major fragment peaks, the NIST standard reference library, and gas chromatography mass spectrometry (GC-MS) analysis. No sample preparation is required for analysis using a portable mass spectrometer coupled to a DIM probe, so the cycle time from ambient air sampling to the acquisition of the results is at least 65 seconds. |
| format | Article |
| id | doaj-art-b14e789e041e4aeca4a249a22ceea557 |
| institution | DOAJ |
| issn | 1687-8760 1687-8779 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Analytical Chemistry |
| spelling | doaj-art-b14e789e041e4aeca4a249a22ceea5572025-08-20T03:20:47ZengWileyInternational Journal of Analytical Chemistry1687-87601687-87792019-01-01201910.1155/2019/17801901780190In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass SpectrometerFred P. M. Jjunju0Stamatios Giannoukos1Alan Marshall2Stephen Taylor3Department of Electrical Engineering and Electronics University of Liverpool, Brownlow Hill, L69 3GJ, UKDepartment of Electrical Engineering and Electronics University of Liverpool, Brownlow Hill, L69 3GJ, UKDepartment of Electrical Engineering and Electronics University of Liverpool, Brownlow Hill, L69 3GJ, UKQ-Technologies Ltd, 100 Childwall Road, Liverpool L15 6UX, UKA portable mass spectrometer was coupled to a direct inlet membrane (DIM) probe and applied to the direct analysis of active fragrant compounds (3-methylbutyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and ethyl methyl sulfide) in real time. These fragrant active compounds are commonly used in the formulation of flavours and fragrances. Results obtained show that the portable mass spectrometer with a direct membrane inlet can be used to detect traces of the active fragrant compounds in complex mixtures such as essential fragrant oils and this represents a novel in-situ analysis methodology. Limits of detection (LOD) in the sub-ppb range (< 2.5 pg) are demonstrated. Standard samples in the gaseous phase presented very good linearity with RSD % at 5 to 7 for the selected active fragrant compounds (i.e., isoamyl acetate, 2-methyl-3-furanthiol, methyl butanoate, and methyl ethyl sulphide). The rise and fall times of the DIM probe are in the ranges from 15 to 31 seconds and 23 to 41 seconds, respectively, for the standard model compounds analysed. The identities of the fragrance active compounds in essential oil samples (i.e., banana, tangerine, papaya, and blueberry muffin) were first identified by comparison with a standard fragrance compounds mixture using their major fragment peaks, the NIST standard reference library, and gas chromatography mass spectrometry (GC-MS) analysis. No sample preparation is required for analysis using a portable mass spectrometer coupled to a DIM probe, so the cycle time from ambient air sampling to the acquisition of the results is at least 65 seconds.http://dx.doi.org/10.1155/2019/1780190 |
| spellingShingle | Fred P. M. Jjunju Stamatios Giannoukos Alan Marshall Stephen Taylor In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer International Journal of Analytical Chemistry |
| title | In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer |
| title_full | In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer |
| title_fullStr | In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer |
| title_full_unstemmed | In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer |
| title_short | In-Situ Analysis of Essential Fragrant Oils Using a Portable Mass Spectrometer |
| title_sort | in situ analysis of essential fragrant oils using a portable mass spectrometer |
| url | http://dx.doi.org/10.1155/2019/1780190 |
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