Journal
JOURNAL OF SEPARATION SCIENCE
Volume 33, Issue 20, Pages 3207-3212Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201000351
Keywords
Beer; Gas-diffusion microextraction (GDME); Sample preparation; Semi volatile analysis; Vicinal diketones
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Funding
- Portuguese Fundacao para a Ciencia e a Tecnologia (FCT) [SFRH/BD/30279/2006, SFRH/BD/36791/2007]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/36791/2007, SFRH/BD/30279/2006] Funding Source: FCT
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Gas diffusion microextraction (GDME) is an innovative technique that combines the advantages of membrane aided gas diffusion with microextraction concepts GDME makes uses of a novel portable and low cost device that comprises a small commercially available semi permeable membrane Furthermore if derivatization is integrated into the GDME concept considerable enrichment factors can be obtained It may become a powerful tool for any analyst who intends to quantify volatile and semi volatile analytes in various kinds of matrices The analysis of vicinal diketones in beer was used as a case study to show GDME applicability and capabilities Vicinal diketones were derivatized with o phenylenediamine and then determined by HPLC UV Obtained results showed good repeatability and precision with extraction periods at the minute time span
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