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研究了一种以金为催化剂，以铁氰化钾与ＥＤＴＡ之间的配位体取代反应为指示反应，以邻菲罗啉为活化剂的新的动力学催化法。此法用氰电极监测反应中释放出来的氰化物，其量与５×１０－９～４×１０－６ｍｏｌ／Ｌ范围内的金的浓度成正比。方法的选择性较高，Ｓｂ３＋、Ｍｏ（Ⅵ）、Ｃｕ２＋、Ｃｏ２＋、Ｎｉ２＋、Ｃｄ２＋、Ｆｅ３＋、Ｃｒ（Ⅲ）、ＮＯ３、Ｃｌ－等２５种离子不干扰测定，主要干扰离子有Ｐｔ４＋、Ａｇ＋、Ｈｇ２＋、Ｐｄ２＋、Ｔｅ（Ⅳ）、Ｔｌ＋等，采用ＴＢＰＰＴＦＥ柱反相萃取色层法分离。在本法确定的最佳实验条件下，可用于矿石及各种复杂物料中痕量金的测定。
A novel kinetic catalysis method using gold as a catalyst, a substitution reaction between a ligand of potassium ferricyanide and EDTA as an indication reaction, and a phenanthroline as an activator was studied. This method cyanide electrode monitoring reaction was released cyanide, the amount of 5 × 10-9 ~ 4 × 10-6mol / L range of gold concentration is proportional to. The method has high selectivity. The 25 kinds of ions such as Sb3 +, Mo (Ⅵ), Cu2 +, Co2 +, Ni2 +, Cd2 +, Fe3 +, Cr3 +, NO3, Cl- do not interfere with the determination. The major interfering ions are Pt4 + , Hg2 +, Pd2 +, Te (Ⅳ), Tl +, etc., using TBP PTFE column reversed-phase extraction chromatography separation. Under the best experimental conditions determined by this Law, it can be used for the determination of trace gold in ores and various complicated materials.