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本文用三波长分光光度新计算法测定违感宁胶囊中扑热息痛含量.即在原三波长分光光度吸光度差法的基础上改进计算方法,从三个组合波长所测得的吸光度值A_1、2_A和A_3,求得纯的待测组分的吸光度值,这样即使受干扰组分吸光的影响,仍可计算出常规单波长分光光度法所测得的待测组分的吸光度值,从而使三波长分光光度A_2~3法既保持了原三波长△A_2~3法的优点,又有原单波长分光光度法的灵敏度.此法简便、易行,快速,重现性好,对仪器要求不高,准确度与精密度均较好,一旦方法建立,即可在一般紫外分光光度计上测定;其回收率为98.97±1.714％,变异系数为1.732％,线性相关系数为0.9989,适用于测定速感宁胶囊中扑热息痛的含量,可以作为一种含量测定方法.
In this paper, a new calculation method of three-wavelength spectrophotometry was used to determine the content of paracetamol in Fenganning Capsule.According to the improved method of three-wavelength spectrophotometric absorbance method, the absorbance values A_1,2_A and A_3 , The absorbance value of the pure analyte is obtained so that the absorbance value of the analyte measured by the conventional single-wavelength spectrophotometry can be calculated even if it is absorbed by the interfering component so that the three-wavelength spectroscopy Photometric A_2 ~ 3 method not only retains the advantages of the original three-wavelength △ A_2 ~ 3 method, but also the sensitivity of the original single-wavelength spectrophotometry.This method is simple, easy, fast, reproducible, less demanding on the instrument, accurate Degree and precision are good, once the method is established, can be determined on a general UV spectrophotometer; the recovery was 98.97 ± 1.714%, the coefficient of variation was 1.732%, the linear correlation coefficient was 0.9989, Paracetamol content in capsules can be used as a method of determination.