【摘要】 建立了火焰原子吸收光谱(FAAS)法间接测定维生素B片中的维生素B1含量的方法。用过量的Ag+与硫胺素盐酸盐的Cl-反应,产生AgCl沉淀,用火焰原子分光光度计测量上清液中剩余Ag+含量进而计算出样品中维生素B1的含量。方法回收率在98%~102%之间,相对标准偏差(RSD%)在1.05%~1.87%之间,方法操作简便,快速,重现性好。更多还原

【Abstract】 An indirect method for the determination of vitamin B1 by flame atomic absorption spectrometry(FAAS).Excess Ag+ reacted with Cl-exists in thiamine hydrochloride to form AgCl,which was separated by centrifuge.Vitamin B1 was determined indirectly by determination of Ag+ in supernatant fluid.The average recoveries were between 98% and 102%,and the relative standard deviations(RSD%) were 1.05%~1.87%.The results showed that the method was sensitive,accurate,convenient and quick,which can be used to detect Vitamin B1 in vitamin tablets.更多还原