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BS EN ISO 20122:2024 Vegetable oils. Determination of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH) with online-coupled high performance liquid chromatography gas chromatography-flame ionization detection (HPLC-GC- >
BS EN ISO 20122:2024 Vegetable oils. Determination of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH) with online-coupled high performance liquid chromatography gas chromatography-flame ionization detection (HPLC-GC-, 2024
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- 7.1 Sampling
- 7.2 Preparation of the final sample for liquid and solid fats
- 8.1 General
- 8.2 Hexane/ethanol distribution for removal of interfering substances
- 8.3 Saponification
- 8.4 Removal of biogenic n-alkanes with aluminium oxide for determination of the MOSH fraction
- 8.5 Clean-up before epoxidation to separate polar substances
- 8.6 Ethanolic epoxidation of the MOAH fraction to oxidize unsaturated non-aromatic compounds
- 8.7 HPLC-GC separation [Go to Page]
- 8.8 Blank run
- 8.9 Quality control
- 9.1 Testing the chromatograms for sufficient epoxidation and other relevant parameters
- 9.2 Calculation
- 10.1 Repeatability limit
- 10.2 Reproducibility limit [Go to Page]