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采用毛细管电泳-间接紫外法测定减肥胶囊中的维生素BT。以4 mmol/L奎宁甲醇溶液作为背景吸收物质,以20mmol/L磷酸二氢钠溶液(pH 2.7)作为运行缓冲溶液,运行电压10 kV,检测波长218 nm。维生素BT在1~40mg/ml范围内线性关系良好,回收率为99.6%,RSD为1.9%。
Determination of Vitamin BT in Slimming Capsules by Capillary Electrophoresis - Indirect Ultraviolet. A 4 mmol / L quinine methanol solution was used as the background absorbant and a 20 mmol / L sodium dihydrogen phosphate solution (pH 2.7) was used as the running buffer solution. The operating voltage was 10 kV and the detection wavelength was 218 nm. Vitamin BT in the range of 1 ~ 40mg / ml good linearity, recovery was 99.6%, RSD was 1.9%.