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eLibrary > 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-, 2025

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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-, 2025

undefined [Go to Page]
European foreword
Endorsement notice
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sample [Go to Page]
7.1 Sampling
7.2 Preparation of the final sample for liquid and solid fats
8 Procedures [Go to Page]
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]
8.7.1 HPLC conditions
8.7.2 GC configuration
8.7.3 Solvent vapour exit configuration
8.7.4 Peak identification
8.7.5 System suitability test
8.8 Blank run
8.9 Quality control
9 Result of the determination [Go to Page]
9.1 Testing the chromatograms for sufficient epoxidation and other relevant parameters
9.2 Calculation
10 Precision of the method [Go to Page]
10.1 Repeatability limit
10.2 Reproducibility limit
11 Test report
Annex A (informative) Graphics and chromatograms
Annex B (informative) Precision data
Annex C (informative) Alternative method for the epoxidation of the MOAH fraction (performic acid epoxidation)
Bibliography [Go to Page]

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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-, 2025

⨯To continue with accurate pricing,
please select your company type below: