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自从许生杰等和松尾力等分别将乙基紫应用于萃取光度法以来,已建立了测定微量锑、铼、铊、金、钽、银、硼、碘、磷和汞的方法。本文探讨了铟-碘-乙基紫离子缔合物的显色反应,对缔合物的形成条件、组成、光度性质作了较详细的研究并成功地拟定了镓中微量铟的直接萃取光度法。方法在选择性及重现性方面均较结晶紫法和孔雀绿法优越,手续简便、快速。 (一)主要试剂及仪器 1.铟标准溶液:称取0.1209g光谱纯三氧化铟,加入10ml 1:1盐酸,在水浴上加热溶
Since the application of ethyl violet to extraction spectrophotometry by XU Sheng-jie et al. And Matsuo force, respectively, a method has been established for the determination of trace amounts of antimony, rhenium, thallium, gold, tantalum, silver, boron, iodine, phosphorus and mercury. In this paper, the color reaction of indium-iodine-ethyl violet complex is discussed. The formation conditions, composition and photometric properties of the complex are studied in detail. The direct extraction luminosity of trace indium in gallium law. The method is superior to the crystal violet method and malachite green method in terms of selectivity and reproducibility, and the procedure is simple and rapid. (A) of the main reagents and instruments 1. Indium standard solution: Weigh 0.1209g spectroscopically pure indium oxide, add 10ml 1: 1 hydrochloric acid, heated in a water bath