MICROWAVE ASSISTED SAPONIFICATION FOLLOW BY LC-GC-FID AND LC-GC × GC TOFMS/FID FOR MOSH AND MOAH DETERMINATION IN DIFFERENT DRY SAMPLES

Mineral oil hydrocarbons in food is a hot topic under intense investigation in the last
decade.
A high throughput, high-sensitivity procedure, involving simultaneous microwave assisted saponification and extraction (MAS), followed by on-line liquid chromatography
(LC)–comprehensive multidimensional gas chromatography (GC×GC) with parallel
detection, time-of-flight (ToF) mass spectrometry (MS) and flame ionization detector
(FID) is proposed. MAS has the advantage of assuring rapid and efficient simultaneous
enrichment and extraction step of mineral oil saturated hydrocarbons (MOSH) and
mineral oil aromatic hydrocarbons (MOAH) in dry foods. The use of a fully integrated
LC- GC×GC-ToFMS/FID platform allows to improve the sample throughput, minimizing
sample manipulation. Moreover, the use of a novel 2D software allows to perform
simultaneously quantification by FID and confirmation thanks to the increased
separation and the highly informative two-dimensional plot obtaining using GC×GC
coupled to ToFMS [1].
Acknowledgement
This work is supported by Fonds de la Recherche Scientifique Belgique (FNRS) (CDR projects MOHPlatform, J.0170.20). The authors thank Milestone, LECO and Restek for their support.
References:
[1] Bauwens et al., J. Chromatography A, Volume 1643, 2021, 462044