| ID | 33030 |
| FullText URL | |
| Author |
Choengchan, N.
Mantim, T.
Wilairat, P.
Dasgupta, P. K.
Motomizu, Shoji
Nacapricha, D.
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| Abstract | This work presents new design of a gas diffusion unit, called 'membraneless gas diffusion (MGD) unit', which, unlike a conventional gas diffusion (GD) unit, allows selective detection of volatile compounds to be made without the need of a hydrophobic membrane. A flow injection method was developed employing the MGD unit to determine ethanol in alcoholic drinks based on the reduction of dichromate by ethanol vapor. Results clearly demonstrated that the MGD unit was suitable for determination of ethanol in beer, wine and distilled liquors. Detection limit (3S/N) of MGD unit was lower than the GD unit (GD: 0.68%, v/v; MGD: 0.27%, v/v). The MGD design makes the system more sensitive as mass transfer is more efficient than that of GD and thus, MGD can perfectly replace membrane-based designs.
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| Keywords | membraneless gas diffusion
flow injection
ethanol determination
liquor
spectrophotometry
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| Note | Published with permission from the copyright holder.
This is published in Analytica Chimica Acta, 2006 Vol.579 Issue.1 pp.33-37 Publisher URL: http://dx.doi.org/10.1016/j.aca.2006.07.018 Direct access to Thomson Web of Science record (C)2006 by Elsevier B.V. |
| Published Date | 2006-10-02
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| Publication Title |
Analytica Chimica Acta
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| Volume | volume579
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| Issue | issue1
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| Publisher | Elsevier Science B.V.
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| Start Page | 33
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| End Page | 37
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| ISSN | 0003-2670
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| NCID | AA00524834
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| Content Type |
Journal Article
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| language |
English
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| Copyright Holders | Elsevier Science B.V.
|
| File Version | author
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| Refereed |
True
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| DOI | |
| Web of Science KeyUT | |
| Submission Path | analytical_chemistry/27
|
