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THE DETERMINATION OF NITROGEN CONTENT IN EXTRA-CARBON FERROCHROME BY DISTILLATION SPECTROPHOTOMETRY
Pages: 45-48
Year: Issue:  6
Journal: Ferro-Alloys

Abstract: 研究了蒸馏-光度法测定中、低碳铬铁中氮含量的分析方法.试样经盐酸、硫酸、过氧化氢分解后,冒硫酸烟使试料中氮化物转化成铵盐,将试液引入蒸馏瓶内,在碱溶液中将铵离子蒸馏出来,氨被水蒸气载出至吸收瓶中吸收,与奈氏试剂生成柠檬黄色的碘化汞铵配合物,经比色测定氮含量.该方法已应用到中、低碳铬铁中氮含量的测定,回收率在95% ~105%之间.
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