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为满足钢中低硅炉前分析的需要,本文采用加入沸腾的酸钼铵溶液于沸腾的试样溶液中来代替水浴加热,可加速反应,使硅钼杂多酸于瞬时形成,仅需90秒钟左右就可完成钢中低硅的测定,方法的准确度及精密度均可与常用的钼蓝光度法及水浴法媲美,本法适于炉前高速分析,也已用于日常分析.分析步骤称试样0.05g于100ml锥形瓶中,加3ml过氧化氢及2ml盐酸,待试样溶解后,加5
In order to meet the needs of low-silicon steel furnace before analysis, in this paper, the addition of boiling acid solution of ammonium molybdate in boiling sample solution instead of water bath heating, can speed up the reaction, the instant heteropoly acid molybdenum silicate formation, only 90 Seconds or so to complete the determination of low-silicon steel, the accuracy and precision of the method can be used with molybdenum blue luminosity method and water bath method comparable to the law for the furnace front high-speed analysis, has also been used for routine analysis. Analysis step said sample 0.05g in 100ml conical flask, add 3ml of hydrogen peroxide and 2ml of hydrochloric acid until the sample is dissolved, add 5