摘要
文中叙述了比值导数光谱法的原理。借助比值导数光谱和选择合适的零交点波长 ,可以消除干扰组分对吸光度的贡献 ,可对三组分体系进行同时分析。利用此方法对复方阿斯匹林片中的阿斯匹林、非那西丁和咖啡因进行了同时测定 ,均获得了较满意的结果。线性回归系数高于 0 9992 ,相对标准偏差 (RSD)小于 3 2 % ,测定样品时的回收率介于 93 3%～ 10 6 3%之间。
The principle of derivative spectrum is described, which is based on the simultaneous use of the first derivative of ratio spectra and measurements of zero-crossing wavelengths. The method can be used to analyze one of three components in ternary mixture and eliminate the interference of others. This method is used to determine the ternary mixture of aspirin, phenacetin and caffeine in APC simultaneous with satisfactory results. The regression coefficient is higher than 0.9992, the relative standard derivatives ( RSD) is less than 3.2 %, the recovery is between 93.3 % - 106.3 %.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2001年第4期534-537,共4页
Spectroscopy and Spectral Analysis
