铌与溴邻苯三酚红和丁基罗丹明B协同显色及其应用

Synergistic Chromogenic Reaction of Niobium with Bromopyrogallol Red and Butyl Rhodamine B and Its Application

摘要: 研究了在溴化十六烷基吡啶存在下，铌与溴邻苯三酚红及丁基罗明Ｂ的协同显色反应。在优化条件下，体系所形成的多元配合物最大吸收波长位于６３５ｎｍ处，表观摩尔吸光系数为１．４３＊１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１，铌的质量浓度在０－１．００ｍｇ／Ｌ符合比尔定律。考察了３０多种共存离子的影响。结果表明干扰较少，钽的允许量可以达到铌的２０倍。方法用于水系沉积，煤渣，合金钢中铌的测定，结果与标准值相符。加标回

Abstract: Synergistic chromogenic reaction of niobium with bromopyrogallol red and butyl rhodamine B in the presence of hexadecylpyridinium bromide was studied. In the optimized conditions, a multicomponent ionassociated complex was formed. The maximum absorption w