Chemical analysis of sulphuric acid and oleum . determination of ammoniacal nitrogen . spectrophotometric method 硫酸和发烟硫酸的化学分析.氨氮测定.分光光度法
Sulphuric acid and oleum for industrial use . determination of total acidity , and calculation of free sulphur trioxide content of oleum . titrimetric method 工业用硫酸和发烟硫酸.总酸度的测定和发烟硫酸中游离三氧化硫成分的计算.滴定法
This method has been used for many times and similar operation time and product are obtained as that using the treatment with a mixture of sulfuric acid , nitric acid and fuming sulfuric acid 经过多次试用,其操作时间和得到的结果,与以前使用的硫酸、硝酸加发烟硫酸的方法基本相同。
The anton paar density and sound velocity analyzers combine two independent parameters , density and sound velocity , to cover a wide range of applications such as quality control in beer and soft drink production , concentration determination of sulphuric acid and oleum or ternary solutions 安东帕密度和声速分析仪结合两种独立参数- -密度和声速,覆盖大范围的应用如:啤酒和软饮料生产中的质量管理、硫酸、发烟硫酸或三元混合液体浓度的测定。