| 高钛钛铁中氮的滴定法测定 |
| |
| 引用本文： | 曹淑红,黄宝成.高钛钛铁中氮的滴定法测定[J].理化检验(化学分册),1999,35(12):552-553. |
| |
| 作者姓名： | 曹淑红 黄宝成 |
| |
| 作者单位： | 盐城工学院化工系 盐城224003
(曹淑红)，盐城工学院化工系 盐城224003(黄宝成) |
| |
| 摘 要： | 利用经典的滴定法,用0.005mol·L~(-1)H_2SO_4溶液吸收在强碱性条件下,用水蒸气蒸馏出的氨,并以0.01mol·L~(-1)NaOH标准溶液返滴定过量的H_2SO_4,测定样品中氮的含量,研究了测定的最佳条件,拟定了高钛钛铁中氮的测定方法,样品的加标回收率为94%～97%,方法用于测定高钛钛铁中的氮,测定下限可至0.04%,RSD<3.5%(n=5),且稳定性好,结果满意.
|
| 关 键 词： | 高钛钛铁 蒸馏 氮 滴定法 测定 |
DETERMINATION OF NITROGEN IN FERROTITANIUM OF HIGH TITANIUM CONTENT |
| |
| Cao Shuhong and Huang Baocheng.DETERMINATION OF NITROGEN IN FERROTITANIUM OF HIGH TITANIUM CONTENT[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,1999,35(12):552-553. |
| |
| Authors: | Cao Shuhong and Huang Baocheng |
| |
| Abstract: | A method for the determination of nitrogen in ferrotitanium is proposed in this paper. In a strong alkaline solution. nitrogen in the sample is transformed into ammonia and expelled from the solution by steam distillation. The ammonia distilled is absorbed in 0.005mol ?L~(-1) H_2SO_4, and finally titrated with a standard solution of 0. Olmol ?L~(-1) NaOH solution. The recovery obtained is in the range 94% ?7% , and its RSD is smaller than 3. 5%(n=5). The limit of determination of this method is 0. 04%. |
| |
| Keywords: | Ferrotitanium Steam distillation Nitrogen |
| 本文献已被 CNKI 等数据库收录！ |
|
