Ultrasonic enhancement of leaching and in situ derivatization of haloacetic acids in vegetable foods prior to gas chromatography–electron capture detection

2008 ◽  
Vol 1201 (1) ◽  
pp. 21-26 ◽  
Author(s):  
B. Álvarez Sánchez ◽  
F. Priego Capote ◽  
M.D. Luque de Castro
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Haloacetic Acids ◽  
Electron Capture Detection ◽  
Vegetable Foods ◽  
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.

Optimization of a methodology for simultaneous determination of twelve chlorophenols in environmental water samples using in situ derivatization and continuous sample drop flow microextraction combined with gas chromatography-electron-capture detection

2017 ◽  
Vol 9 (19) ◽  
pp. 2865-2872 ◽  
Author(s):  
Mostafa Karimaei ◽  
Kiomars Sharafi ◽  
Masoud Moradi ◽  
Hamid Reza Ghaffari ◽  
Hamed Biglari ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Water Samples ◽  
Environmental Water ◽  
Environmental Water Samples ◽  
Electron Capture Detection ◽  
Preconcentration Technique ◽  
Drop Flow

Continuous sample drop flow microextraction (CSDFME) combined with gas chromatography-electron-capture detection (GC-ECD) has been developed as a high preconcentration technique for the determination of chlorophenols (CPs) in environmental water samples.

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