一阶导数光谱法测定复方双氯芬酸片中双氯芬酸的含量

Determination of diclofenac in its tablets by firstderivative spectrophotometry

本文采用一阶导数光谱法测定复方双氯芬酸片中双氯芬酸的含量，以２９４ｎｍ为测定波长，可排除其它成分的干扰，快速简便，平均回收率１００．０％，相对标准偏差０．３％。

his paper presents the determination of diclofenac in tablets by first derivative spectrophotometry with294nm as the detection wavelength ,the interference of other components was eliminated. The method is simple ,theaverage recovery 100. 0 % with the RSD of 0. 3%.