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１引言 实验研究了几种碱性染料在不同介质条件下的显色反应和萃取条件，在ｐＨ＝２．４的Ｎａ２ＨＰＯ４－柠檬酸介质中，乙基紫与ＲｅＯ４－形成蓝绿色的离子缩合物被苯萃取，使有色萃合物的测定灵敏度大为提高，方法的表观摩尔吸光系数为ε＝２．７６ ×１０５·Ｌ·ｍｏｌ
1 Introduction Experimental study of several basic dyes under different media conditions of color reaction and extraction conditions, pH = 2.4 Na2HPO4-citric acid medium, ethyl violet and ReO4- to form a blue-green ion condensate It was extracted by benzene, which greatly improved the determination sensitivity of the colored complex. The apparent molar absorptivity of the method was ε = 2.76 × 105 · L · mol