建立了蜂蜜中维生素B1、维生素B2、维生素B5(泛酸)、维生素B6(吡哆醇)和维生素B7(生物素)同时测定的超高效液相色谱-串联质谱的分析方法。样品经20 mmol/L甲酸铵溶液提取,HLB固相萃取柱净化,采用HSS T3色谱柱分离,以甲醇和20 mmol/L甲酸铵为流动相进行梯度洗脱,采用电喷雾离子源正离子模式,多反应监测进行检测,外标法定量。该方法在5~200 ng/mL范围内线性关系良好(R2>0.99),5种维生素检出限均为20 μg/kg,定量限均为50 μg/kg。在空白蜂蜜样品中进行50、250、500 μg/kg 这3个水平的加标回收实验,方法的平均回收率为90.2%~108.8%,精密度小于15%。该方法简便、高效、准确性好、抗干扰能力强,可用于蜂蜜中5种水溶性维生素的同时检测。
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