ISO 914-1977 标准详情
- 标准号:ISO 914-1977
- 中文标题:工业用硫酸和发烟硫酸.氮总含量的测定.蒸馏后滴定法测定
- 英文标题:sulphuric acid and oleum for industrial use; determination of total nitrogen content; titrimetric method after distillation
- 标准类别:国际标准化组织标准ISO
- 发布日期:1977-11-15
The method is applicable to products having a total nitrogen content equal to or greater than 0.05 % (m/m). The principle consists in the conversion of the nitrogen present in a test portion to ammonia by means of nascent hydrogen. Distillation and a
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