吸光度比值-导数光谱法同时测定苯酚和间苯二酚

• 作 者: 徐嘉凉 汤晓东 江向东
• 机 构: 华东理工大学石油化工学院,华东理工大学石油化工学院,华东理工大学石油化工学院 上海200540,上海200540,上海200540
• 出 处: 分析化学
• 发表日期: 1999年06期
• 关键词: 吸光度 导数光谱法 同时测定 苯酚 间苯二酚 多组分 普通分光光度计 复方雷琐辛涂剂 光谱分析法 二元混合物 混合光谱 含量 干扰 导数运算 计算法 导数值 波

吸光度比值-导数光谱是近年来提出的多组分光谱分析法.该法以二元混合物的混合光谱与其中某一组分(被视为干扰组分)的标准光谱的比值对波长求导,从而得到吸光度比值-导数光谱.由于干扰组分对吸光度比值-导数光谱的贡献为零,所以可利用吸光度比值-导数值测出待测组分的含量.本文在普通分光光度计上用计算法完成了吸光度比值导数运算,同时测定了复方雷琐辛涂剂中苯酚(P)和间苯二酚(R)的含量,取得了较为满意的结果.

Absorbance Ratio - Derivative Spectroscopy is a multi-component spectroscopic method proposed in recent years that uses the ratio of the mixture spectrum of a binary mixture to the standard spectrum of one of the components (considered as interfering component) So as to get the ratio of absorbance - derivative spectrum.Because the interfering component to the absorbance ratio - derivative of the contribution of the spectrum is zero, so the absorbance ratio can be used to determine the derivative of the measured component content.In this paper, with a common spectrophotometer The derivative calculation of absorbance ratio was completed, and the content of phenol (P) and resorcinol (R) in the compound triadimefon was determined. Satisfactory results were obtained.