Analysis of polynuclear aromatic hydrocarbons by glass capillary gas chromatography using simultaneous flame ionization and electron capture detection

1979 ◽  
Vol 2 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Alf Bjorseth ◽  
GÖRan Eklund
1985 ◽  
Vol 68 (4) ◽  
pp. 741-745
Author(s):  
Jana Chovancova ◽  
Eva Matisova ◽  
Vojtech Batora

Abstract Residues of ethylenethiourea (ETU) in grapes and wine were deter- [ mined by capillary gas chromatography and paper chromatography, without a cleanup step, and after derivatization to 5-benzyl-ETU. The ! detection limit was 0.0002 mg/kg for flame ionization detection, 0.008 mg/kg for paper chromatography with photodensitometric evaluation of the detected spot. Results were compared with a generally used GC method specifying electron capture detection of trifluoroacetylated S- benzyl-ETU. The recoveries of ETU in grapes and wine at different j concentration levels were determined. ETU residues were determined J in treated grapes but no residues were detected in wine


1979 ◽  
Vol 177 (1) ◽  
pp. 51-60 ◽  
Author(s):  
F.A. Fitzpatrick ◽  
D.A. Stringfellow ◽  
Jacques Maclouf ◽  
Michel Rigaud

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