De analyse methode voor het onderzoek van melamine op formaldehyde van de Europese Commissie

The 2 methods are analytical procedures for the quantitative determination of formaldehyde in approximate analyte concentration range of 3,0 mg to 30 mg formaldehyde per kilogram of food simulant, which corresponds to 2,3 mg to 23,3 mg hexamethylenetetramine per kilogram of food simulant. They are interchangeable for use as determination and confirmation. Both are spectrophotometric. One uses chromotropic acid in the presence of sulphuric acid, and the other pentane-2,4-dione in the presence of ammonium acetate.