Gas chromatographic determination of formaldehyde in maple syrup as 2,4-dinitrophenylhydrazone derivative.
A procedure is presented for the quantitative extraction and determination of formaldehyde in maple sap and syrup. The method is based on the reaction between formaldehyde and 2,4-dinitrophenylhydrazine and determination of the derivative by gas chromatography. The procedure was used to evaluate formaldehyde in saps and syrups of paraformaldehyde implanted trees. Average recoveries were 101.5 +/- 5.7%. The detection limit was 0.078 mg/kg.
Agriculture Canada, Laboratory Services Division, Ottawa, Ontario.
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Z
Baraniak
D S
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Nagpal
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Neidert
D002849:Chromatography, Gas; D005506:Food Contamination / Q000032:analysis*; D005557:Formaldehyde / Q000032:analysis*; D006835:Hydrazones
C001072:2,4-dinitrophenylhydrazone; D006835:Hydrazones; D005557:Formaldehyde