T/SHFCA 002-2024 Determination of vitamin A, D, E in foods for special medical purposes by On-line solid phase extraction-two-dimensional liquid phase chromatography (English Version)
This standard is applicable to the detection of vitamins A, D, and E in formula foods for special medical purposes. Fat-soluble vitamins are unstable in nature and are also affected by environmental and experimental conditions. Sample preparation has the most critical impact on data accuracy. Fat-soluble vitamins are distributed in various forms in the sample. Pretreatment requires the removal of fat-soluble substances in the matrix. First, saponification is required, and then extraction, purification and other operations are performed. Online solid-phase extraction-two-dimensional high-performance liquid chromatography uses online solid-phase extraction combined with heart-cutting two-dimensional liquid chromatography (onlineSPE-2DLC) technology. The sample is directly injected after saponification to automatically complete the enrichment and purification of target analytes. and separation processes. This method shortens the sample analysis time, further improves the method analysis efficiency, and can be used for routine rapid detection of vitamins A, D and E in formula foods for special medical purposes.
T/SHFCA 002-2024 history
2024T/SHFCA 002-2024 Determination of vitamin A, D, E in foods for special medical purposes by On-line solid phase extraction-two-dimensional liquid phase chromatography
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