ISO 2991-1974 标准详情
- 标准号:ISO 2991-1974
- 中文标题:工业用硝酸;氨态氮含量测定;分光光度分析法
- 英文标题:nitric acid for industrial use; determination of ammoniacal nitrogen content; spectrophotometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1974-04-01
Applicable to products containing more than 0.0001 % (m/m) of ammoniacal nitrogen. The procedure described is siutable for contents between 0.0001 % (m/m) and 0.0005 % (m/m). The principle of the analysis consists in distillation, with entrainment by
* 特别声明:资源收集自网络或用户上传,本网站所提供的电子文本仅供参考,请以正式出版物为准。仅供个人标准化学习,研究使用。如有侵权,请及时联系我们!
