摘要
用可视滴定法测定铝钒中间合金中的钒时,对称样量和硫酸亚铁铵滴定液浓度的关系进行了探讨。实验发现,基体铝对于铝钒合金中钒的测定无影响。常见的铝钒合金范围为50%～60%,低于50%和高于标准上限0.5%钒含量的合金没有实验样品,通过向样品溶液中加入钒标准溶液可模拟铝钒合金试样。依据化学分析等物质量反应定律,选择不同钒含量的试验样品,对钒的称样量和滴定液浓度进行优化,确定了硫酸亚铁铵滴定液的浓度与滴定液消耗体积的合适关系。
The correlation between the sampling and the titration concentration of vanadium in the determination of vanadium in aluminium-vanadium master alloy by visual titration was explored. The influence of aluminium substrate on the determination of vanadium content was investigated, the result indicated that the aluminium substrate could not affect the vanadium determination. The concentration of the vanadium was usually 50% - 60%, there was no experimental sample in which vanadium content less than 50% or higher than 60.5%. It was necessary to simulate the sample of the aluminium -vanadium master alloy by adding vanadium standards without the matching of the substrate. According to the chemical reaction laws, the test specimens with different content of vanadium were chosen, the sampling and the titration concentration of vanadium were optimized. The appropriate relationship of the concentration of ferrous ammonium sulphate solution and the volume of titrant was defined.
出处
《化学分析计量》
CAS
2013年第2期97-99,共3页
Chemical Analysis And Meterage
关键词
可视滴定
铝钒中间合金
钒
称样量
滴定液浓度
visual titration
aluminium-vanadium master alloy
vanadium
sampling
titration concentration
