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铌—钛—钽及铌—钛合金中微量钨钼的连续测定用其他方法有一定困难。有色金属研究总院金静如工程师用连续催化极谱测定,方法简便、快速,结果良好。考虑了测定中各种因素的影响,她拟定的最佳示波极谱测定的底液条件。该条件为0.7N硫酸—0.25％苦杏仁酸—3％氯酸钾—0.08％辛可宁—0.0015％8-羟基喹啉。在此体系中0—10微克钨,0—6微克钼(50毫升体积)浓度与波高成比例关系。200倍钼不干扰钨的测定,20倍钨不干扰钼的测定。400
Continuous Determination of Trace Tungsten and Molybdenum in Niobium-Titanium-Tantalum and Niobium-Titanium Alloys There are some difficulties with other methods. Jin Jingru non-ferrous metals Research Institute engineers using continuous catalytic polarography, the method is simple, fast and good results. Taking into account the influence of various factors in the assay, she developed the best oscillopolarographic determination of the bottom liquid conditions. The conditions are 0.7 N sulfuric acid - 0.25% mandelic acid - 3% potassium chlorate - 0.08% cinchonine - 0.0015% 8-hydroxyquinoline. In this system 0-10 microgram tungsten, 0-6 microgram molybdenum (50 milliliter volume) concentration is proportional to the wave height. 200 times the molybdenum does not interfere with the determination of tungsten, 20 times the tungsten does not interfere with the determination of molybdenum. 400