Novel flame photometric detector for gas chromatography based on counter-current gas flows

2004 ◽  
Vol 1029 (1-2) ◽  
pp. 193-203 ◽  
Author(s):  
Kevin B Thurbide ◽  
Brad W Cooke ◽  
Walter A Aue
Keyword(s):  
Gas Chromatography ◽  
Gas Flows ◽  
Flame Photometric Detector ◽  
Photometric Detector ◽  
Counter Current

Gas Chromatographic Determination of Ethylene Thiourea Residues

1973 ◽  
Vol 56 (2) ◽  
pp. 333-337 ◽  
Author(s):  
Linwood D Haines ◽  
Irving L Adler
Keyword(s):  
Gas Chromatography ◽  
Sodium Borohydride ◽  
Chromatographic Determination ◽  
Food Crops ◽  
Alumina Column ◽  
Flame Photometric Detector ◽  
Photometric Detector ◽  
Ethylene Thiourea

Abstract Residues of ethylene thiourea on food crops are determined by extracting the sample with methanol, partially purifying the extract on an alumina column, and derivatizing the ethylene thiourea extracted with 1-bromobutane in the presence of dimethylformamide and sodium borohydride. The resulting derivative is measured by gas chromatography, using a flame photometric detector. The method is suitable for routine use and is sensitive to 0.01 ppm.

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