Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/94911
Author(s): Joao Grosso Pacheco
Ines Maria Valente
Luis Moreira Goncalves
Jose Antonio Rodrigues
Aquiles Araujo Barros
Title: Gas-diffusion microextraction
Issue Date: 2010
Abstract: 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
Subject: Química analitica, Química aplicada, Química
Analytical chemestry, Applied chemistry, Chemical sciences
Scientific areas: Ciências exactas e naturais::Química
Natural sciences::Chemical sciences
URI: https://hdl.handle.net/10216/94911
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FCUP - Artigo em Revista Científica Internacional

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