食品科学

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加压毛细管电色谱-紫外法检测复方维生素片中4 种脂溶性维生素

郑 署1,施文君1,王晓曦1,李 静2,谷 雪1,闫 超1,*   

  1. 1.上海交通大学药学院,上海 200240;2.上海通微分析技术有限公司,上海 201203
  • 出版日期:2014-10-25 发布日期:2014-11-07
  • 基金资助:

    国家自然科学基金面上项目(21175092);国家自然科学基金青年科学基金项目(21105064);
    国家重大科学仪器设备开发专项(2011YQ150072;2011YQ15007204;2011YQ15007207;2011YQ15007210);
    上海市自然科学基金项目(12ZR1413600)

Determination of Four Fat-Soluble Vitamins in Vitamin Tablets by Pressurized Capillary Electrochromatography with UV Detection

ZHENG Shu1, SHI Wen-jun1, WANG Xiao-xi1, LI Jing2, GU Xue1, YAN Chao1,*   

  1. 1. School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, China;
    2. Unimicro (Shanghai) Technologies Co. Ltd., Shanghai 201203, China
  • Online:2014-10-25 Published:2014-11-07

摘要:

采用反相加压毛细管电色谱-紫外检测,建立一种高效、简便、快速的脂溶性维生素分析方法,并用于复合维生素片中脂溶性维生素的检测。使用C18反相毛细管色谱柱,以含0.05%三氟乙酸的95%甲醇溶液(pH 3.3)为流动相进行等度洗脱,泵总流速为0.2 mL/min,分离电压为15 kV,并针对脂溶性维生素样品个体间紫外吸收波长差别较大的问题,采用波长时间程序进行检测。VA、VD3、VE、VK3四种脂溶性维生素可在5 min内实现快速分离。各组分的最低检出限(RSN=3)分别为1.5、3.0、15、1.5 μg/mL,线性关系良好,样品加标回收率在90.0%~110.0%之间,相对标准偏差为0.53%~5.46%。将所建立方法应用于维生素片样品分析,取得了良好的分析结果。该方法简单方便、重复性好、准确可靠。

关键词: 加压毛细管电色谱, 紫外检测, 脂溶性维生素, 复合维生素片

Abstract:

An effective, convenient and fast method for the analysis of fat-soluble vitamins in vitamin tablets was developed
using pressurized capillary electrochromatography (pCEC) with ultra violet (UV) detection. The separations was performed
on a reversed-phase C18 capillary column with a certain detection wavelength-time program. The mobile phase was 95%
(V/V) methanol containing 0.05% TFA (pH 3.3) at a flow rate of 0.2 mL/min with a separation voltage of 15 kV. Four fatsoluble
vitamins (vitamin A, vitamin D3, vitamin E, and vitamin K3) were baseline separated within 5 min in an isocratic
pCEC mode. The detection limits for vitamin A, vitamin D3, vitamin E, and vitamin K3 (RSN = 3) were 1.5, 3.0, 15 and
1.5 μg/mL with good linearity, respectively. The interference on the analysis of vitamin tablets was effectively eliminated.
The recoveries of spiked fat-soluble vitamin samples were 90.0%–110.0% with RSD ranging from 0.53% to 5.46%. This
method is simple, rapid, repeatable and accurate.

Key words: pressurized capillary electrochromatography (pCEC), ultra-violet (UV) detection, fat-soluble vitamin, vitamin tablets

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