【摘要】 运用比光谱 -导数分光光度 (作图 )法的基本原理 ,推导了比光谱 -导数分光光度 (计算 )法同时测定二元混合物含量的基本公式 ,研究了邻、间硝基酚 ,邻、对硝基酚和间、对硝基酚的三种二元混合物含量的同时测定 ,取得了满意结果。另外 ,还比较了单位质量浓度的除数因子与一般除数因子在测量该 3种二元混合物时的方法灵敏度 ,证明用单位质量浓度溶液标准光谱作除数因子时灵敏度较高。更多还原

【Abstract】 The calculation formulae for ratio-spectra derivative spectrophotometry(calculation method)based on ratio-spectra derivative spectrophotometry(graphical method)were derived.The result of simultaneous determination of o-nitrophenol,m-nitrophenol and p-nitrophenol in binary mixtures by the proposed method was satisfactory.Comparison between the results obtained by different divisors indicated that the sensitivity of the method was higher in the case of?‘normalized spectra’than that in the case of‘standard spectra’. [更多还原