比值光谱一阶导数法同时测定苯酚和间苯二酚

以二元混合物的光谱除以其中某一组分的标准光谱而得到的比值光谱，对波长求导，可将重叠光谱分开而消除干扰，从而可方便的完成二组分混合体系中各组分的测定，

First Derivative of Ratio Spectrum Method for Simultaneous Determination of Phenol and Resorcin

The ratio spectrum obtained by the absorption spectrum of binary mixture system dividing by a standard spectrum of one of the components and the subsequent derivation to the wavelength, can separate the overlapping spetrum and eliminate the interference. Therefore, this method is convenient in the analysis of binary mixture system with a minor error. In this paper, the mixture of Phenol and Resorcin was determined using this method. The RSD was less than 5.8%(n=8). The contents of Phenol and Resorcin in Pigmentum Resorcinoli Co were determined simultaneously with the recoveries of 99.3-103.8% and 96.6-104.0%, respectively.