Publication:
New membraneless vaporization unit coupled with flow systems for analysis of ethanol

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Issued Date

2013

Resource Type

Article

File Type

application/pdf

ISSN

32670

DOI

10.1016/j.aca.2013.07.072

Other identifier(s)

2-s2.0-84883561185

Rights Holder(s)

Scopus

Bibliographic Citation

Analytica Chimica Acta. Vol 796, No. (2013), p.61-67

Suggested Citation

Ratanawimarnwong N., Pluangklang T., Chysiri T., Nacapricha D. New membraneless vaporization unit coupled with flow systems for analysis of ethanol. Analytica Chimica Acta. Vol 796, No. (2013), p.61-67. doi:10.1016/j.aca.2013.07.072 Retrieved from: https://hdl.handle.net/20.500.14740/6550

Title

New membraneless vaporization unit coupled with flow systems for analysis of ethanol

Author(s)

Ratanawimarnwong N.
 Pluangklang T.
 Chysiri T.
 Nacapricha D.

Abstract

This work presents the development of a new design for a membraneless vaporization (MBL-VP) unit, called dual chamber MBL-VP for measurement of volatile compounds. With this unit, exact volumes of sample and reagent are introduced into their respective cone-shaped chambers from the base of the cones. Diffusion of volatile analyte then takes place. After an appropriate time interval, the acceptor solution is withdrawn from the chamber into the detector flow-cell, while the sample solution is withdrawn to waste. Unlike the previous MBL-VP design, problems with overflow of solutions are eliminated by precise control of the input volume to be less than the volume of the chamber. The developed flow system with the dual chamber MBL-VP unit was applied to the determination of the ethanol content of various liquid samples, using the oxidation reaction between potassium dichromate and the diffused ethanol. In addition, in order to accelerate the gas diffusion process, the donor chamber was aerated. As the result, relatively short analysis time of 144. s was achieved for ethanol content in the range of 5-50% (v/v). The proposed method was successfully validated against a gas chromatographic method for 17 alcoholic samples. Percentage recovery was in the range of 96-109%. © 2013 Elsevier B.V.

Subject(s)

Chromatographic methods
 Dual chamber
 Gas diffusion process
 Membraneless vaporization units
 Oxidation reactions
 Percentage recovery
 Potassium dichromates
 Volatile compounds
 Chromatographic analysis
 Vaporization
 Vapors
 Volatile organic compounds
 Ethanol
 Alcohol
 Dichromate potassium
 Volatile agent
 Accuracy
 Article
 Chemical analysis
 Chemical composition
 Controlled study
 Diffusion
 Equipment design
 Gas chromatography
 Measurement
 Membraneless vaporization
 Oxidation
 Priority journal
 Quantitative analysis
 Reliability
 Vaporization
 Volumetry

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URI

https://hdl.handle.net/20.500.14740/6550

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Scopus: Year 1983-2021

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