摘要
利用硝苯地平对光不稳定的性质，建立了测定其霜剂含量的光解差示分光光度法。在２３７ｍｍ波长处测定光照前后的吸收度差值（△Ａ）。△Ａ与浓度在５μｍ／ｍｌ～２５μｍ／ｍｌ范围内呈线性关系（ｒ＝０．９９９８），平均回收率为９９．７５％，精密度为１．８１％。
Based on the unstable character of Nifedipine to light, a quantitativedetermination of Nifedipine in cream by differential spectrophotometry was studied. The differential absorbance (△A)was measured at 237 nm before and after irradiation by light.△A was linear with concentration in the range of 5～25μg/ml(r=0.09998).The average recovery and precision for nifedipine was 99.75%and l.81%, respectively.
出处
《泰山医学院学报》
1994年第2期91-93,共3页
Journal of Taishan Medical College
关键词
硝苯地
分光光度法
含量
测定
Nifedipine
differential spectrophotometry
quantitative determina-tlon
