Analysis of benzophenone and 4-Methylbenzophenone (cas 134-84-9) in breakfast cereals using ultrasonic extraction in combination with gas chromatography–tandem mass spectrometry (GC–MSn)

Add time:09/29/2019    Source:infona.pl

Benzophenone (BP) and 4-Methylbenzophenone (cas 134-84-9) (4MBP) are photo-initiators that are generally used to cure ink on carton boards.In this contribution, a fast and reliable method for the determination of BP and 4MBP in breakfast cereals is described. The sample was extracted ultrasonically using a mixture of dichloromethane and acetonitrile (1:1), followed by a clean-up of the extract using solid phase extraction with a silica cartridge. Finally, the extract was analysed by GC–MS n . Benzophenone-d 10 was used as internal standard. The presented method is validated in terms of linearity, recovery, repeatability and intra-laboratory reproducibility, specificity, limit of detection and limit of quantification. In conclusion, this method is able to detect both BP and 4MBP at very low concentrations (LOD=2μgkg −1 ) in breakfast cereals.

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