Premium
Gas‐diffusion microextraction
Author(s) -
Pacheco João Grosso,
Valente Inês Maria,
Gonçalves Luís Moreira,
Rodrigues José António,
Barros Aquiles Araújo
Publication year - 2010
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.201000351
Subject(s) - derivatization , repeatability , vicinal , chromatography , extraction (chemistry) , chemistry , analyte , gas chromatography , diffusion , solid phase microextraction , high performance liquid chromatography , gas chromatography–mass spectrometry , mass spectrometry , organic chemistry , physics , thermodynamics
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.