Aqueous in situ derivatization of carboxylic acids by an ionic carbodiimide and 2,2,2-trifluoroethylamine for electron-capture detection

2007 ◽  
Vol 1145 (1-2) ◽  
pp. 241-245 ◽  
Author(s):  
Quincy LaRon Ford ◽  
Justina Marie Burns ◽  
John Lee Ferry
Keyword(s):  
Carboxylic Acids ◽  
Electron Capture ◽  
Electron Capture Detection ◽  
In Situ Derivatization

Electron Capture Gas Chromatographic Determination of Traces of Formaldehyde in Milk as the 2,4-Dinitrophenylhydrazone

1986 ◽  
Vol 69 (4) ◽  
pp. 655-657
Author(s):  
Katherine E Buckley ◽  
Lorne J Fisher ◽  
Vernon G MacKay
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Quantitative Method ◽  
Chromatographic Method ◽  
Packed Column ◽  
Chromatographic Determination ◽  
Electron Capture Detection ◽  
External Standard

Abstract A quantitative method is described for the determination of formaldehyde in milk by packed-column gas chromatography and electron capture detection. Aldehyde derivatization was carried out in situ with 2,4-dinitrophenyIhydrazine followed by extraction and analysis using an external standard. Average recoveries of 96.3 ± 1.6% were characteristic of the chromatographic method with an estimated detection limit of 0.026 mg/kg. The technique was applied to determination of formaldehyde in milk from cows consuming a formalin-treated feedstuff.

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