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提出了利用双波长分光光度法测定三辛胺（ＴＯＡ）及三辛胺盐酸盐（ＴＯＡ·ＨＣｌ）的一种新方法，即ＴＯＡ和ＴＯＡ·ＨＣｌ在ＣＣｌ４溶液中与Ｉ２生成电荷转移化合物，其最大吸收波长分别为２９３ｎｍ和２６３ｎｍ，两组分同时存在时可利用吸光度的加和性得联立方程，分别求出两组分的含量。ＴＯＡ含量在０～３５ｍｇ／Ｌ，ＴＯＡ·ＨＣｌ含量在０～３１ｍｇ／Ｌ范围内符合比耳定律。该法简便快速，方法的回收率为９５．５％～１０４．６％，能够满足分析的需要
A new method for the determination of TOA and TOA · HCl by dual-wavelength spectrophotometry is proposed, in which TOA and TOA · HCl generate charge-transfer compounds with I2 in CCl4 solution, The maximum absorption wavelength of 293nm and 263nm, respectively, the two components can be used simultaneously absorbance sum of simultaneous equations, respectively, to determine the content of the two components. Beer’s law is obeyed with TOA content of 0-35mg / L and TOA · HCl content of 0-31mg / L. The method is simple and rapid, the recovery rate of 95.5% ~ 104.6%, to meet the needs of analysis