A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection
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 d...
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th-mahidol.229642018-08-20T13:58:47Z A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection N. Choengchan T. Mantim P. Wilairat P. K. Dasgupta S. Motomizu D. Nacapricha Mahidol University Okayama University Texas Tech University at Lubbock Biochemistry, Genetics and Molecular Biology Chemistry Environmental Science 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. © 2006 Elsevier B.V. All rights reserved. 2018-08-20T06:49:34Z 2018-08-20T06:49:34Z 2006-10-02 Article Analytica Chimica Acta. Vol.579, No.1 (2006), 33-37 10.1016/j.aca.2006.07.018 00032670 2-s2.0-33748797933 https://repository.li.mahidol.ac.th/handle/123456789/22964 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=33748797933&origin=inward |
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Biochemistry, Genetics and Molecular Biology Chemistry Environmental Science N. Choengchan T. Mantim P. Wilairat P. K. Dasgupta S. Motomizu D. Nacapricha A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
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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. © 2006 Elsevier B.V. All rights reserved. |
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Mahidol University |
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Mahidol University N. Choengchan T. Mantim P. Wilairat P. K. Dasgupta S. Motomizu D. Nacapricha |
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Article |
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N. Choengchan T. Mantim P. Wilairat P. K. Dasgupta S. Motomizu D. Nacapricha |
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N. Choengchan |
title |
A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
title_short |
A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
title_full |
A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
title_fullStr |
A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
title_full_unstemmed |
A membraneless gas diffusion unit: Design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
title_sort |
membraneless gas diffusion unit: design and its application to determination of ethanol in liquors by spectrophotometric flow injection |
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2018 |
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https://repository.li.mahidol.ac.th/handle/123456789/22964 |
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1763496935542489088 |