摘要
本文研究了在ＰＶＡ１２４存在下，钛（ＩＶ）与溴邻苯三酚红和罗丹明６Ｇ的协同显色反应，探讨了利用该反应分光光度法测定钛的最佳条件，在硫酸介质中，钛与溴邻苯三酚红和罗丹明６Ｇ形成红色配合物，其最大吸收波长λｍａｘ为５６０ｎｍ，表观摩尔吸光系数ε５６０为１．２９×１０５Ｌ·ｍｏｌ－１ｃｍ－１，钛量在０－８μｇ／２５ｍｌ范围内符合比耳定律。
A method is proposed for the spectrophotometric delermination of titanium with bromopyrogallol and rhodamine 6G by synergistic colour reaction. A red coloured complex is formed in a dilute sulfuric acid medium contained PVA124,and a molar absorptivity is 1.29×105L·mol-1·cm-1 at 560nm,This method has been used for determination of titanium in alloys with satisfactory resuIty.
