【摘要】 银杏叶提取物（ＥＧｂ）经ＫＢｒ压片后，在１８４０～１７２６ｃｍ－１区间，用傅里叶变换红外光谱仪测量峰面积，以美国Ｓｉｇｍａ的银杏内酯Ｂ为标准品，用ＦＴＩＲ标准加入法测定ＥＧｂ中的总内酯含量，其结果与ＲＰＨＰＬＣ、ＲＩ法接近，平均回收率９６．８％，ＳＤ０．４，ＲＳＤ５．５％，方法简便，结果可靠，适于ＥＧｂ及其制剂在生产过程中作质量控制的测定方法用。更多还原

【Abstract】 Extract of Gininkgo biloba(EGb),pressed into a clear wafer with Potassium Bromide power ,was determined by means of Fourier Transform Infrared Spectrometry(FTTR).In order to calculate the total lactone in EGb,the standard sample,Ginkgo B(bought from Sigma in USA) was added and the total area of peak in the region between 1840 cm -1 and 1726 cm -1 was measured. The result by standard addition Method on FTIR approached that by the RPHPLC RI Method.The average recovery was 96 8% , S.D ±0 4 ,R.S D 5 5% .The method is simple,rapid,reliable and suitable for the determination method of quality control in the process of EGb preparations.更多还原