Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/18875
Título: A reagentless flow injection system for the quantification of ethanol in beverages based on the schlieren effect measurement
Autor: Vidigal, Susana S.M.P.
Rangel, António O. S. S.
Palavras-chave: Flow-injection system
Ethanol
Schlieren effect
Alcoholic beverages
Gas-diffusion
Data: 2015
Citação: VIDIGAL, Susana S.M.P. ; RANGEL, António O.S.S. - A reagentless flow injection system for the quantification of ethanol in beverages based on the schlieren effect measurement. Microchemical Journal. ISSN 0026-265X. N.º 121 (2015), p. 107–111
Resumo: A flow injection system comprising a gas-diffusion unit and schlieren effect detection was arranged in order to develop a simple methodology for the quantification of ethanol in different alcoholic beverages. It was possible to establish a linear range up to 25% (v/v), with a LOD and a LOQ of 0.6% and 2.0% (v/v), respectively; with good repeatability, RSD b 4.6%. Only 80 μL of sample was needed for quantification with a determination rate of one determination per minute. To evaluate the accuracy of the proposed method, a total of 43 alcoholic beverages, red andwhite table wine, port wine, beers, liquors, spirits and brandies were analysed. The results obtained by the developed method were in good agreement with the ones obtained by the reference method.
Peer review: yes
URI: http://hdl.handle.net/10400.14/18875
DOI: http://dx.doi.org/10.1016/j.microc.2015.02.006
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review



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