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用三元络合物测定各种物料中钛的资料较多,但在钢铁和高温合金中应用较少,我们参照了有关文献,试验了用于钢铁及高温合金中钛的分析方法。实验证明:方法灵敏度高,选择性好,操作简单,稳定性和精确度均满足要求。 (一)主要试剂 1.二安替吡啉甲烷溶液1％:10克二安替吡啉甲烷溶于20毫升浓盐酸中,用水稀至1升。 2.变色酸溶液0.3％:称取变色酸1.5克,无水亚硫酸钠及碳酸钠各1.5克,溶于水中,稀释至500毫升,贮于棕色瓶中,可用一周。 3.钛标准溶液(0.1毫克/毫升);称取光谱纯二氧化钛0.1668克,加10克硫酸铵,加浓硫酸20毫升,加热至溶解完全,冷却后,稀释至1升。
Ternary complexes with various materials in the determination of titanium more information, but less used in steel and superalloys, we refer to the literature, the test for the analysis of titanium in steel and high temperature alloys. Experiments show that the method has high sensitivity, good selectivity, simple operation, stability and accuracy meet the requirements. (A) The main reagent 1. Two antipyrine methane solution 1%: 10 grams of two antipyrine methane dissolved in 20 ml of concentrated hydrochloric acid, dilute to 1 liter with water. 2. Discoloration acid solution 0.3%: Weigh 1.5g of chromotropic acid, 1.5g of anhydrous sodium sulfite and sodium carbonate, dissolved in water, diluted to 500ml, stored in a brown bottle for one week. Titanium standard solution (0.1 mg / ml); Weigh the spectrum of pure titanium dioxide 0.1668 grams, add 10 grams of ammonium sulfate, add concentrated sulfuric acid 20 ml, heated to dissolve completely, after cooling, dilute to 1 liter.