健脑片是由7种成分组成的复方制剂,在 pH 为7的磷酸盐缓冲液中,VB_6在324nm 波长有最大吸收峰而其他成分在此处无吸收,空白溶液在324nm 波长处也无吸收,作标准溶液的回收实验得一直线,因此可以用波长324nm 测定维生素 B_6(VB_6)的含量。做样品测得标准偏差为±0.36%和±0.43%,变异系数均为0.35%说明结果可靠。 Brain tablet is a compound preparation composed of 7 components. In pH 7 phosphate buffer, VB_6 has the maximum absorption peak at 324 nm wavelength and other components have no absorption at this point. The blank solution also has no absorption at 324 nm wavelength , As a standard solution recovery experiment was a straight line, so you can use the wavelength 324nm determination of vitamin B_6 (VB_6) content. The standard deviations of measured samples were ± 0.36% and ± 0.43%, and the coefficients of variation were 0.35%, which indicated that the results were reliable.