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利用高效液相色谱法同时测定瘤胃液中几种水溶性维生素

DOI: 10.3969/j.issn.1006-267x.2013.02.017

Keywords: 高效液相色谱,瘤胃液,水溶性维生素

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Abstract:

本试验旨在建立利用高效液相色谱同时测定瘤胃液中几种水溶性维生素的方法。取瘤胃液,用正己烷、偏磷酸萃取后,其上清液用氮气吹干浓缩(40℃),以流动相A溶解。色谱条件:SBC8色谱柱,粒径5μm,4.6mm×150mm;流动相A,V甲醇:V0.05mol/L磷酸三钠(pH=2.5)=7:93;流动相B,V甲醇:V0.05mol/L磷酸三钠(pH=2.5)=90:10;流速1.0mL/min;检测波长245nm。结果表明:1)该方法对烟酰胺、烟酸、叶酸、核黄素和氰钴胺素的最小检出质量浓度分别为12.90、12.00、74.11、24.00、9.57ng/mL(信噪比=3),线性回归相关系数分别为0.9999、0.9993、0.9903、0.9990、0.9995;2)瘤胃液样品中加标烟酰胺、烟酸、叶酸、核黄素和氰钴胺素的平均回收率分别为97.5%、96.8%、73.2%、84.4%、89.1%,相对标准偏差分别为2.9%、3.0%、15.6%、7.8%、5.0%。由此得出,本方法适用于同时测定瘤胃液中烟酰胺和烟酸的含量。

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