【摘要】 采用紫外分光光度法测定维乐生片中维生素Ｂ１和维生素Ｂ６含量，以磷酸盐缓冲液（ｐＨ７．０）作溶媒，制成溶液在３２５ｎｍ波长处测得的Ａ值为维生素Ｂ６的吸收度，吸收系数（Ｅ）为３５０；在２６８ｎｍ波长处测得的Ａ值减去Ａ３２５×０．２３２后的差值为维生素Ｂ１的吸收度，吸收系数（Ｅ）为２４５。回收率维生素Ｂ６为１００．２％，ＲＳＤ＝０．３％；维生素Ｂ１为１００．９％，ＲＳＤ＝０．９％。维生素Ｂ１２含量测定按广东省标准法。更多还原

【Abstract】 he contents of vitamine B1 and B6 in the weilasheng tablet was determined by ultraviolet spectrophotometry.Phosphatebuffer(pH 7.0)was used as solvent. The absorbance of vitamme B6 was measured at 325 nm,its E1%1cm was 350,the ab-sorbance of vitamine B1 was the difference of A268 and 0.232 A325,theE1%1 cm was 245. The recovery of vitamine B6 was100.2%RSD=0.3%.and of vitamine B1,was 100.9%,RSD=0.9%.更多还原