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Following the deproteination of the milk sample by means of zinc hexacyanoferrate, acetoacetic acid was decarboxylated by heating; the acetone originally present was then determined together with the acetone formed. The essence of the determination was that acetone reacted with bromine in the presence of sulphuric acid, following which, the bromoacetone formed was extracted into toluene, separated...
A novel, single step method for the determination of seven ink photo-initiators in carton packed milk samples is described. Solid-phase microextraction (SPME) and gas chromatography (GC), combined with mass spectrometry (MS), were used as sample preparation and determination techniques, respectively. Parameters affecting the performance of the microextraction process were thoroughly evaluated using...
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