Micro-solid phase extraction followed by thermal extraction coupled with gas chromatography-mass selective detector for the determination of polybrominated diphenyl ethers in water

2016 ◽  
Vol 1458 ◽  
pp. 25-34 ◽  
Author(s):  
Nyi Nyi Naing ◽  
Sam Fong Yau Li ◽  
Hian Kee Lee
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Extraction ◽  
Polybrominated Diphenyl Ethers ◽  
Solid Phase ◽  
Phase Extraction ◽  
Mass Selective Detector ◽  
Selective Detector ◽  
Diphenyl Ethers ◽  
Thermal Extraction

scholarly journals Determina tion of diacetyl and 2,3-pentanedione in beer by gc/ms using solid-phase extraction columns

2002 ◽  
pp. 45-54 ◽  
Author(s):  
Jelena Pejin ◽  
Olgica Grujic ◽  
Nikola Marjanovic ◽  
Djura Vujic ◽  
Suncica Kocic-Tanackov
Keyword(s):  
Gas Chromatography ◽  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Solid Phase ◽  
Phase Extraction ◽  
Mass Selective Detector ◽  
Selective Detector

A new GC/MS method for the determination of diacetyl and 2,3-pentanedione was investigated. Diacetyl and 2,3-pentanedione were derivatized with 1,2-diaminobenzene to form 2,3-dimetylquinoxaline and 2-ethyl-3-methylquinoxaline. respectively. The amounts of formed 2.3-dimetylqu:inoxaline and 2-ethyl-3,.methylquinoxaline were proportional to the concentrations of diacetyl and 2,3-penianedione present in the sample. 2,3-Dimetylquinoxaline and 2-ethyl-3-methylquinoxaline were extracted by solid-phase extraction (SPE) columns and determined by gas chromatography using a mass selective detector. This method was applied for the determination of diacetyl and 2,3-pentanedione concentrations in beer. Extraction by SPE columns proved to be very simple and reliable. The method can be used for simultaneous determination of diacetyl and 2,3-pentanedione concentrations in beer in a great number of beer samples.

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