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气相色谱法测定维生素E的含量
气相色谱法测定维生素E的含量详细信息：

(1)检验依据    《中国药典》(2010版)二部807页“维生素E”:本品为合成型或天然型维生素E;含C₃₁H₅₂O₃应为标示量的96.0%～102.0%。

(2)含量测定    照气相色谱法[《中国药典》(2010版)附录V E]测定

用硅酮(OV-17)为固定液,涂布浓度为2%的填充柱,或用100%二甲基聚硅氧烷为固定液的毛细管柱;柱温为265℃,理论板数按维生素E峰计算不低于500(填充柱)或5000(毛细管柱),维生素E峰与内标物质峰的分离度应符合要求。

名称：不锈钢柱
规格：2m*3mm，60-80目
型号：1.5%OV-17/Shimalite  W
编号：20230914001
*高温度：300°C

气相色谱法测定维生素E的含量图片：



Determination of Vitamin E Content by Gas Chromatography

Detailed information on the determination of vitamin E content by gas chromatography:



(1) Test basis: "Vitamin E" on page 807 of Part II of the Chinese Pharmacopoeia (2010 edition): This product is a synthetic or natural type of vitamin E; The content of C31H52O3 should be 96.0% to 102.0% of the labeled amount.



(2) Assay by gas chromatography [Appendix V E of the Chinese Pharmacopoeia (2010 edition)]



Use silicone (OV-17) as the fixed solution, coat a packed column with a concentration of 2%, or use a capillary column with 100% dimethyl polysiloxane as the fixed solution; The column temperature is 265 ℃, and the number of theoretical plates calculated based on the vitamin E peak should not be less than 500 (packed column) or 5000 (capillary column). The separation degree between the vitamin E peak and the internal standard substance peak should meet the requirements.



Name: Stainless steel column

Specification: 2m * 3mm, 60-80 mesh

Model: 1.5% OV-17/Shimalite W

No.: 20230914001

*High temperature: 300 ° C




Picture of the content of vitamin E measured by gas chromatography: