Large volume injection GC-MS in electron capture negative ion mode utilizing isotopic dilution for the determination of polybrominated diphenyl ethers in air

2003 ◽  
Vol 26 (12-13) ◽  
pp. 1103-1110 ◽  
Author(s):  
Jonas Björklund ◽  
Petter Tollbäck ◽  
Conny Östman
Keyword(s):  
Electron Capture ◽  
Large Volume ◽  
Polybrominated Diphenyl Ethers ◽  
Negative Ion ◽  
Isotopic Dilution ◽  
Large Volume Injection ◽  
Diphenyl Ethers ◽  
Negative Ion Mode

scholarly journals Fast Analysis of Polybrominated Diphenyl Ethers in Eggs Using Selective Pressurized Liquid Extraction Coupled with Online GPC-GC/MS

2010 ◽  
Vol 93 (4) ◽  
pp. 1308-1312 ◽  
Author(s):  
Yin-Ping Liu ◽  
Jing-Guang Li ◽  
Yun-Feng Zhao ◽  
Lei Zhang ◽  
Rui Zhou ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Gel Permeation Chromatography ◽  
Dry Mass ◽  
Liquid Extraction ◽  
Pressurized Liquid Extraction ◽  
Negative Ion ◽  
Fast Analysis ◽  
Diphenyl Ethers ◽  
Selective Pressurized Liquid Extraction

Abstract This article reports the applicability of online gel permeation chromatography (GPC)-GC/MS for the determination of seven predominant polybrominated diphenyl ethers (PBDEs) in eggs to effectively eliminate matrix interference. Selective pressurized liquid extraction using acidic alumina as a fat retainer was used for cleanup of the PBDEs in eggs. It was selected because of its advantages: simpler operation, minimum time spent on sample handing to get fat-free extracts, and low volume of solvent consumption. After concentration, the extract was directly injected for online GC/MS operated in the negative ion chemical ionization mode with a 15 m capillary column. Recoveries of spiked samples were between 75.1 and 102.0, with RSDs (n = 3) ranging from 3.6911.47 when spiked at levels of 2 and 20 ng/g, dry mass. The LOD varied from 0.2534 ng/g, dry mass. The proposed method was proven to be rapid, efficient, and reliable for the trace determination of PBDEs in eggs.

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